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Preliminary Integrated Geologic Map Databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, Vermont

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What does this data set describe?

Title:
Preliminary Integrated Geologic Map Databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, Vermont
Abstract:
These metadata are specifically for the State of Maine, one state in the national compilation of state geologic map databases. The digital geologic state map data of Maine was prepared by the Maine Geological Survey in cooperation with the USGS between 1987-1994. Subsequent editing of the spatial data by the USGS was limited to fitting a standardized state boundary to the data, standardizing the arc coding, reprojecting the data, and minor edits of arc or polygon attributes to conform with the paper map. This open-file report is one of several that present the preliminary results of the USGS Mineral Resources Program activity to compile a national-scale geologic map database to support national and regional level projects, including mineral resource and geoenvironmental assessments. The only comprehensive sources of regional- and national-scale geologic maps are state geologic maps with scales ranging from 1:100,000 to 1:1,000,000. Digital versions of these state maps form the core of what is presented here. Because no adequate geologic map exists for the state of Alaska, it is being compiled in regional blocks that also form part of this national database. It is expected that this series will completed by approximately the end of 2007. These maps and databases are being released in blocks of states or, in the case of Alaska, as compiled blocks of 1:250,000-scale quadrangles as chapters in this series. For Alaska, formal maps as well as databases are being published here, whereas for the conterminous U.S. only state databases and preview graphics are presented, because published maps for most states already exist. For Alaska these regional compilations will form the base for compiling a new geologic map of the state. As documented in CONUSdocumentationNENJ.pdf, standards for the conterminous U.S. are somewhat different than those for Alaska and Hawaii.
Supplemental_Information:
This database consists of up to five major Arc/Info GIS datasets for each state; - one: geologic map with formations, - two: faults (where present), - three: dikes (where present), - four: miscellaneous line features (where present), - five: miscellaneous point features (where present).
  1. How might this data set be cited?
    Nicholson, Suzanne W., Dicken, Connie L., Horton, John D., Foose, Michael P., Mueller, Julia A.L., and Hon, Rudi, 2006, Preliminary Integrated Geologic Map Databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, Vermont: U.S. Geological Survey Open-File Report 2006-1272, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -71.084768
    East_Bounding_Coordinate: -66.743337
    North_Bounding_Coordinate: 47.895758
    South_Bounding_Coordinate: 42.895758
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2006Currentness_Reference: publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: map
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set.
    2. What coordinate system is used to represent geographic features?
      The map projection used is Lambert Conformal Conic.
      Projection parameters:
      Standard_Parallel: 33
      Standard_Parallel: 45
      Longitude_of_Central_Meridian: -100.0
      Latitude_of_Projection_Origin: 0
      False_Easting: 0.00000
      False_Northing: 0.00000
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.01
      Ordinates (y-coordinates) are specified to the nearest 0.01
      Planar coordinates are specified in Meters
      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
  7. How does the data set describe geographic features?
    ME_geol.pat
    Polygon attribute table for the Maine geologic coverage. (Source: ESRI)
    ORIG_LABEL
    unmodified map unit symbol from source cover.

    type: character width: 12 output width: 12 (Source: Doug Stoeser (USGS))
    ValueDefinition
    C1Carboniferous granite undivided
    C1(m)Carboniferous granite (muscovite accessory mineral)
    C1b(m)Carboniferous alkali feldspar granite (muscovite accessory mineral)
    C1b(m,s)Carboniferous alkali feldspar granite (muscovite accessory, abundant sedimentary inclusions)
    C4aCarboniferous alkali feldspar quartz syenite
    C7Carboniferous syenite
    C9Carboniferous gabbro/diorite/ultramafic rocks
    CA6Cambrian quartz diorite
    CA9Cambrian gabbro/diorite/ultramafic rocks
    CA9cCambrian ultramafic rocks
    CAclfCambrian Caucomgomoc Lake Formation, quartzwacke and pelite member
    CAclgCambrian Caucomgomoc Lake Formation, basalt member
    CAgpCambrian Grand Pitch Formation
    CAhCambrian Hurricane Mountain Formation
    CAhaCambrian Hurricane Mountain Formation, Amphibolaite and Greenschist
    CAhmgCambrian Hurricane Mountain Formation, metagabbro
    CAhpxCambrian Hurricane Mountain Formation, metapyroxenite
    CAhqCambrian Hurricane Mountain Formation, black and gray metaquartzite
    CAhqwCambrian Hurricane Mountain Formation, metaquartzwacke
    CAhrCambrian Hurricane Mountain Formation, metafelsite
    CAjCambrian Jim Pond Formation
    CAjfCambrian Jim Pond Formation, quartzwacke and pelite
    CAjgCambrian Jim Pond Formation mafic volcanic rocks
    CAjkCambrian Jim Pond Formation, felsic volcanic rocks
    CAjpCambrian Jim Pond Formation siltstone, mudstone, and pelite
    CAjqCambrian Jim Pond Formation graywacke
    CAlsCambrian Loon Stream Formation
    CAuvmCambrian unnamed mafic volcanic rocks
    CDsCarboniferous - Devonian unnamed conglomerate and sandstone
    D1Devonian granite
    D1(h)Devonian granite (hornblende accessory mineral)
    D1(m)Devonian granite (muscovite accessory mineral)
    D1(p)Devonian granite (pyroxene plus hornblende accessory mineral)
    D1(x)Devonian granite (porphyritic texture)
    D1(y)Devonian granite (granophyric texture)
    D1(z)Devonian granite (intrusive breccia texture)
    D1-4c(h)Devonian granite-quartz monzonite (hornblende accessory mineral)
    D1-6Devonian granite-quartz diorite
    D10(h)Devonian foid-bearing syenite (hornblende accessory mineral)
    D1,2(h)Devonian granite-granodiorite (hornblende accessory mineral)
    D1aDevonian alkali feldspar granite
    D1bDevonian granite
    D1b(h)Devonian granite (hornblende accessory mineral)
    D1b(m)Devonian granite (muscovite accessory mineral)
    D1b(m),3Devonian granite (muscovite accessory mineral), tonalite
    D2Devonian granodiorite
    D2(h)Devonian granodiorite (hornblende accessory mineral)
    D2(h,x)Devonian granodiorite (hornblende accessory mineral, porphyritic texture)
    D2(m)Devonian granodiorite (muscovite accessory mineral)
    D2-4b(x)Devonian granodiorite - quartz syenite (porphyritic texture)
    D2-5(h)Devonian granodiorite - quartz monzodiorite (hornblende accessory mineral)
    D2-D6Devonian granodiorite - quartz diorite
    D3Devonian tonalite
    D4cDevonian quartz monzonite
    D4c(h)Devonian quartz monzonite (hornblende accessory mineral)
    D4c(m)Devonian quartz monzonite (muscovite accessory mineral)
    D5-6(p)Devonian quartz monzodiorite - quartz diorite (pyroxene plus hornblende accessory mineral)
    D5,6(p)Devonian quartz monzodiorite - quartz diorite (pyroxene plus hornblende accessory mineral)
    D6(h)Devonian quartz diorite (hornblende accessory mineral)
    D7Devonian syenite
    D7(p)Devonian syenite (pyroxene plus hornblende accessory mineral)
    D7,8(p)Devonian syenite, monzodiorite (porphyritic texture)
    D8Devonian monzodiorite
    D9Devonian gabbro/diorite/ultramafic rocks
    D9-D6Devonian gabbro/diorite/ultramafic rocks - quartz diorite
    D9aDevonian diorite
    D9bDevonian gabbro
    D9b-cDevonian gabbro - ultramafic rocks
    DbDevonian Beck Pond Limestone
    DcDevonian Carrabassett Formation
    Dc?Devonian Carrabassett Formation (uncertain)
    DCAusDevonian - Cambrian unnamed sedimentary rocks
    DchDevonian Chapman Sandstone
    DcmDevonian Carrabassett Formation massive pelite member
    DcqDevonian Carrabassett Formation quartzite member
    DcsDevonian Carrabassett Formation thinly layered member
    DebDevonian Eastport Formation basalt member
    DehDevonian Edmunds Hill Andesite
    DepDevonian Eastport Formation pelite member
    DevDevonian Eastport Formation mafic to felsic volcanic member
    DhDevonian Hildreths Formation
    DhbDevonian Hobbstown Formation
    DhdDevonian Hedgehog Formation
    DhmDevonian Heald Mountain Rhyolite
    DhmdDevonian Heald Mountain Rhyolite dark tuff member
    DhrDevonian Hartin Formation
    DimDevonian Ironbound Mountain Formation
    DlDevonian Littleton Formation
    DmDevonian Mapleton Formation
    DmgDevonian Matagamon Sandstone
    DObDevonian - Ordovician Bucksport Formation
    DOdgDevonian - Ordovician Dideguash Formation
    DOfDevonian - Ordovician Flume Ridge Formation
    DOsDevonian - Ordovician Spruce Top Greenstone
    DOupDevonian - Ordovician unnamed pelite
    DOvUndifferentiated mafic to felsic volcanic rocks
    DpbDevonian Perry Formation basalt member
    DpkDevonian Parker Bog Formation
    DpssDevonian Perry Formation sandstone member
    DsDevonian Seboomook Formation
    DSasDevonian - Silurian Allagash Lake Formation mixed sedimentary rocks
    DSavDevonian - Silurian Allagash Lake Formation, basalt and mixed sedimentary rocks
    DsbDevonian Swanback Formation
    DSbbcDevonian - Silurian Bell Brook Formation, conglomerate member
    DSbbsDevonian - Silurian Bell Brook Formation, pelite member
    DSbhDevonian - Silurian Bar Harbor Formation
    DscDevonian Seboomook Formation Camera Hill Greenstone
    DScaDevonian - Silurian Castine Formation
    DScdDevonian - Silurian Calderwood Formation
    DscgDevonian Seboomook Formation unnamed conglomerate
    DSdDevonian - Silurian Daggett Ridge Formation
    DsdDevonian Seboomook Formation Day Mountain member
    DsdcDevonian Seboomook Formation Day Mountain member conglomerate
    DsdlDevonian Seboomook Formation Day Mountain member limestone
    DSfhDevonian - Silurian Fogelin Hill Formation
    DSfpDevonian - Silurian Frost Pond Formation
    DSfrlDevonian - Silurian Fish River Lake Formation
    DSmDevonian - Silurian Madrid Formation
    DsmDevonian Seboomook Formation Mount Blue member
    DSmigDevonian - Silurian undifferentiated sedimentary rocks in areas of extreme migmatization
    DsqDevonian Seboomook Formation unnamed quartzite
    DSraDevonian - Silurian Rindgemere Formation upper member
    DSrbDevonian - Silurian Rindgemere Formation lower member
    DSrblDevonian - Silurian Rindgemere Formation lower member limestone
    DSrbrDevonian - Silurian Rindgemere Formation lower member sulfidic pelite
    DSsDevonian - Silurian undifferentiated sedimentary rocks of the Spider Lake, Chandler Pond and Third Lake Formations
    DStDevonian - Silurian Towow Formation
    DstDevonian Seboomook Formation Temple Stream member
    DStcDevonian - Silurian Towow Formation conglomerate
    DStfDevonian - Silurian Thorofare Andesite
    DSucDevonian - Silurian unnamed conglomerate
    DsugDevonian Seboomook Formation unnamed mafic greenstone
    DsupDevonian Seboomook Formation unnamed pelite
    DSusDevonian - Silurian unnamed sedimentary rocks
    DSussDevonian - Silurian unnamed conglomeratic sandstone
    DSuvUnnamed volcanic rocks
    DSvUndifferentiated volcanic rocks of the Spider Lake and Chandler Pond Formations
    DSvhDevonian - Silurian Vinalhaven Rhyolite
    DtDevonian Tarratine Formation
    DtmDevonian Tarratine Formation Misery Quartzite
    DtmcDevonian Tarratine Formation McKenny Pond Limestone
    DtoDevonian Tomhegan Formation
    DtokcDevonian Tomhegan Formation Kineo Rhyolite member tuffs and volcaniclastic rocks
    DtokgDevonian Tomhegan Formation Kineo Rhyolite member garnet rhyolite
    DtokmTomhegan Formation, Kineo Rhyolite Member, Massive Felsite
    DtrbTraveler Rhyolite, Black Cat Member
    DtrpDevonian Traveler Rhyolite Pogy member
    DtvDevonian Trout Valley Formation
    DucDevonian unnamed conglomerate
    DulcDevonian unnamed limestone conglomerate
    DupDevonian unnamed pelite
    DurgDevonian unnamed garnet rhyolite
    DuryDevonian unnamed rhyolite
    DusDevonian unnamed sedimentary rocks
    DussDevonian unnamed lithic sandstone and conglomerate
    DuvmDevonian unnamed mafic volcanic rocks
    DwWhiskey Quartzite
    DZarDevonian - Precambrian Z Appleton Ridge Formation
    DZgDevonian - Precambrian Z Gonic Formation
    J1Jurassic granite
    K(z)Cretaceous intrusive breccia
    K1aCretaceous alkali feldspar granite
    K1bCretaceous granite
    K4aCretaceous alkali feldspar quartz syenite
    K5Cretaceous quartz monzodiorite
    K6,9Cretaceous quartz diorite - gabbro/diorite/ultramafic rocks
    K7aCretaceous alkali feldspar syenite
    K8Cretaceous monzodiorite
    K9Cretaceous gabbro/diorite/ultramafic rocks
    KvCretaceous mafic to felsic volcanic rocks
    Mz1(h)Mesozoic granite (hornblende accessory mineral)
    Mz10Mesozoic foid-bearing syenite
    Mz7Mesozoic syenite
    Mz7aMesozoic alkali feldspar syenite
    Mz9Mesozoic gabbro/diorite/ultramafic rocks
    MzvMesozoic mafic to felsic volcanic rocks
    O1Ordovician granite
    O1bOrdovician granite
    O1b,2Ordovician granite, granodiorite
    O2Ordovician granodiorite
    O4c(h)Ordovician quartz monzonite (hornblende accessory mineral)
    O6(h)Ordovician quartz diorite (hornblende accessory mineral)
    O9Ordovician gabbro/diorite/ultramafic rocks
    OamOrdovician Ammonoosuc Volcanics
    ObbOrdovician Blind Brook Formation
    ObhOrdovician Benner Hill formation
    ObhgOrdovician Benner Hill Formation sulfidic pelite
    OblOrdovician Belle Lake Slate
    ObpOrdovician Bluffer Pond formation
    ObprOrdovician Bluffer Pond Formation rhyolite member
    OCAbOrdovician - Cambrian Mount Battie Formation
    OCAcOrdovician - Cambrian Cookson formation
    OCAcbOrdovician - Cambrian Chase Brook Formation
    OCAcqrOrdovician - Cambrian Cookson Formation sulfidic quartzose sandstone
    OCAcrOrdovician - Cambrian Cookson Formation sulfidic pelite
    OCAcssOrdovician - Cambrian Cookson Formation lithic sandstone and pelite
    OCAcvOrdovician - Cambrian Cookson Formation mafic to felsic volcanic rocks
    OCAdOrdovician - Cambrian Dead River formation
    OCAdpOrdovician - Cambrian Dead River formation lower member
    OCAdqOrdovician - Cambrian Dead River formation upper member
    OCAhmOrdovician - Cambrian Hurd Mountain formation
    OCAhmbOrdovician - Cambrian Hurd Mountain formation basalt member
    OCAmeOrdovician - Cambrian Megunticook Formation
    OCAmecMegunticook Formation, Polymictic Conglomerate Member
    OCAmelMegunticook Formation, Limestone Member
    OCApPenobscot Formation
    OCApgPenobscot Formation, Basalt Member
    OCApmigOrdovician - Cambrian Penobscot Formation extensively migmatized area
    OCAsOrdovician - Cambrian Sawmill Formation
    OCAscOrdovician - Cambrian Southeast Cove Formation
    OCAsdOrdovician - Cambrian Saint Daniel formation
    OCAsdqOrdovician - Cambrian Saint Daniel formation quartzite and red and green shale
    OCAusOrdovician - Cambrian unnamed sedimentary rocks
    OCAuvOrdovician - Cambrian unnamed volcanic rocks
    OCAzOrdovician - Cambrian Aziscohos Formation
    OclOrdovician Chase lake formation
    OclcOrdovician Chase lake Formation conglomerate member
    OclsOrdovician Chase Lake Formation sandstone and pelite member
    OcrOrdovician Chandler Ridge Formation
    OdmpOrdovician sandstone and pelite of the Depot Mountain sequence
    OdmsOrdovician graywacke of the Depot Mountain sequence
    OdmvOrdovician tuff of the Depot Mountain sequence
    OdwOrdovician Dry Wall Volcanic rocks
    OhhOrdovician Holmes Hole Formation
    OkOrdovician Kennebec Formation
    OkmgOrdovician Kamankeag Formation basalt and graywacke member
    OkmsOrdovician Kamankeag Formation pelite member
    OlmOrdovician Lobster Mountain volcanic complex
    OlmaOrdovician Lobster Mountain volcanic complex andesite member
    OlmbOrdovician Lobster Mountain volcanic complex basalt member
    OmOrdovician Madawaska Lake Formation
    OmlOrdovician Munsungun Lake Formation
    OpmOrdovician Pile Mountain Argillite
    OqOrdovician Quimby formation
    OqgOrdovician Quimby formation graywacke member
    OqsOrdovician Quimby formation pelite member
    OqvOrdovician Quimby formation rhyolitic volcanic member
    OsbOrdovician Shin Brook Formation
    OupOrdovician unnamed pelite
    OurOrdovician unnamed sulfidic pelite
    OusOrdovician unnamed sandstone and pelite
    OussOrdovician unnamed sandstone
    OusspOrdovician unnamed quartz sandstone and pelite
    OuvOrdovician unnamed volcanic rocks
    OuvfOrdovician unnamed felsic volcanic rocks
    OuvmOrdovician unnamed mafic volcanic rocks
    OuvsOrdovician unnamed volcanic and sedimentary rocks
    OwOrdovician Winterville Formation
    OwcOrdovician Wassataquoik Chert
    OZcOrdovician - Precambrian Z Cushing Formation
    OZceOrdovician - Precambrian Z Cape Elizabeth Formation
    OZceqOrdovician - Precambrian Z Cape Elizabeth Formation quartzite member
    OZcevOrdovician - Precambrian Z Cape Elizabeth Formation mafic to felsic volcanic member
    OZcfOrdovician - Precambrian Z Columbia Falls Formation
    OZcgOrdovician - Precambrian Z Cushing Formation mafic volcanic member
    OZclOrdovician - Precambrian Z Cushing Formation limestone
    OZcqOrdovician - Precambrian Z Cushing Formation quartzite
    OZcrOrdovician - Precambrian Z Cushing Formation sulfidic pelite
    OZeOrdovician - Precambrian Z Ellsworth formation
    OZefOrdovician - Precambrian Z Ellsworth formation quartz granofels member
    OZevOrdovician - Precambrian Z Ellsworth formation greenstone member
    OZjOrdovician - Precambrian Z Jewell Formation
    OZmOrdovician - Precambrian Z Macworth formation
    OZpgOrdovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block
    OZpglOrdovician - Precambrian Z calc-silicate rocks of the Passagassawakeag block
    OZpgsOrdovician - Precambrian Z interbedded pelite and quartz sandstone of the Passagassawakeag block
    OZsOrdovician - Precambrian Z Spring Point Formation
    OZscOrdovician - Precambrian Z Scarboro and Diamond Island formations
    OZskOrdovician - Precambrian Z Spurwink Limestone
    OZusOrdovician - Precambrian Z unnamed sedimentary rocks
    pCAcPrecambrian gneisses of the Chain Lakes Massif
    S1Silurian granite
    S9Silurian gabbro/diorite/ultramafic rocks
    S9cSilurian ultramafic rocks
    SakSilurian Ames Knob formation
    SbbSilurian Burnt Brook Formation
    ScSilurian Capens Formation
    ScguSilurian undifferentiated conglomerates and coarse-grained sandstones
    SdbSilurian Dennys formation basalt member
    SdvSilurian Dennys Formation mafic to felsic volcanic rock member
    SeSilurian Edmunds formation
    SfSilurian Frenchville Formation
    SfmSilurian rocks of the Fivemile Brook sequence
    SfmgSilurian greenstone rocks of the Fivemile Brook sequence
    SgSilurian Greenvale Cove Formation
    ShSilurian Hersey formation
    ShmSilurian Hardwood Mountain Formation
    SjSilurian Jemtland Formation
    SlbSilurian Leighton Formation basalt member
    SlpSilurian Leighton Formation pelite member
    SlvSilurian Leighton Formation mafic to felsic volcanic rock member
    SmmSilurian Maple Mountain Formation
    SnsSilurian New Sweden Formation
    SoSilurian Oak Bay formation
    SOarSilurian - Ordovician Aroostook River Formation
    SOcmSilurian - Ordovician Carys Mills Formation
    SOcmlSilurian - Ordovician Carys Mills Formation lower member
    SOcmsSilurian - Ordovician Carys Mills Formation pelite member
    SOdbSilurian - Ordovician Dunn Brook formation
    SOfSilurian - Ordovician Frontenac Formation
    SOfcSilurian - Ordovician Frontenac Formation Canada Falls volcanic member
    SOlbSilurian - Ordovician Lobster Lake Formation
    SOmSilurian - Ordovician Mattawamkeag Formation
    SOmhSilurian - Ordovician Mars Hill Conglomerate
    SOnSilurian - Ordovician Nine Lake formation
    SOucSilurian - Ordovician unnamed conglomerate
    SOupSilurian - Ordovician unnamed pelite
    SOurSilurian - Ordovician unnamed sulfidic pelite
    SOusSilurian - Ordovician unnamed sedimentary rocks
    SOuvSilurian - Ordovician unnamed volcanic rocks
    SOvSilurian - Ordovician Vassalboro formation
    SOwSilurian - Ordovician Vassalboro Formation volcanic rocks
    SpSilurian Perry Mountain formation
    SpuSilurian undifferentiated pelites and sandstones
    SqpSilurian Quoddy formation pelite member
    SqvSilurian Quoddy Formation mafic to felsic volcanic rock member
    SqvuSilurian Quoddy Formation undifferentiated volcanic rock member
    SrSilurian Rangeley formation
    SraSilurian Rangeley Formation "A" member
    SracSilurian Rangeley Formation "A" member lithic sandstone"
    SrbSilurian Rangeley Formation "B" member
    SrcSilurian Rangeley Formation "C" member
    SrmSilurian Rocky Mountain Quartz Latite
    SrpSilurian Ripogenus Formation
    SsSilurian Sangerville Formation
    SsaSilurian Sangerville Formation Anasagunticook member
    SsalSilurian Sangerville Formation Anasagunticook member limestone
    SsarSilurian Sangerville Formation Anasagunticook member sulfidic pelite
    SscSilurian Sangerville Formation conglomerate member
    Ssf?Silurian Smalls Falls Formation?
    SsfSilurian Smalls Falls Formation?
    SslSilurian Sangerville Formation limestone member
    SsmSilurian Smyrna Mills Formation
    SspmSilurian Sangerville Formation Patch Mountain member
    SsprSilurian Spragueville Formation
    SsrSilurian Sangerville Formation sulfidic pelite member
    SsuSilurian undifferentiated sandstones
    StfSilurian The Forks Formation
    SucSilurian unnamed conglomerate
    SucsSilurian unnamed conglomerate and sandstone
    SulSilurian unnamed limestone
    SurSilurian Unnamed sulfidic pelite
    SusSilurian unnamed sedimentary rocks
    SussSilurian unnamed sandstone
    SuvmSilurian unnamed mafic volcanic rocks
    SuvsSilurian unnamed volcanic and sedimentary rocks
    SwSilurian Waterville Formation
    SwbSilurian West Branch Volcanic Rocks
    SwlSilurian Waterville Formation limestone member
    SZ9cSilurian - Precambrian Z ultramafic rocks
    SZbSilurian - Precambrian Z Berwick Formation
    SZeSilurian - Precambrian Z Eliot Formation
    SZkSilurian - Precambrian Z Kittery Formation
    waterWater
    ZcbPrecambrian Z Coombs Limestone
    ZiPrecambrian Z rocks of Islesboro
    ZilPrecambrian Z rocks of Islesboro limestone
    ZnhPrecambrian Z North Haven Formation
    ZopPrecambrian Z Ogier Point Formation
    ZrPrecambrian Z Rye Formation
    ZrkPrecambrian Z Rockport Formation
    SGMC_LABEL
    orig_label + ;n where n= province number (n=0 if no province number)

    type: character width: 16 output width: 16 (Source: Doug Stoeser (USGS))
    ValueDefinition
    C1;0Carboniferous granite undivided
    C1(m);0Carboniferous granite (muscovite accessory mineral)
    C1b(m);0Carboniferous alkali feldspar granite (muscovite accessory mineral)
    C1b(m,s);0Carboniferous alkali feldspar granite (muscovite accessory, abundant sedimentary inclusions)
    C4a;0Carboniferous alkali feldspar quartz syenite
    C7;0Carboniferous syenite
    C9;0Carboniferous gabbro/diorite/ultramafic rocks
    CA6;0Cambrian quartz diorite
    CA9;0Cambrian gabbro/diorite/ultramafic rocks
    CA9c;0Cambrian ultramafic rocks
    CAclf;0Cambrian Caucomgomoc Lake Formation, quartzwacke and pelite member
    CAclg;0Cambrian Caucomgomoc Lake Formation, basalt member
    CAgp;0Cambrian Grand Pitch Formation
    CAh;0Cambrian Hurricane Mountain Formation
    CAha;0Cambrian Hurricane Mountain Formation, Amphibolite and Greenschist
    CAhmg;0Cambrian Hurricane Mountain Formation, metagabbro
    CAhpx;0Cambrian Hurricane Mountain Formation, metapyroxenite
    CAhq;0Cambrian Hurricane Mountain Formation, black and gray metaquartzite
    CAhqw;0Cambrian Hurricane Mountain Formation, metaquartzwacke
    CAhr;0Cambrian Hurricane Mountain Formation, metafelsite
    CAj;0Cambrian Jim Pond Formation
    CAjf;0Cambrian Jim Pond Formation, quartzwacke and pelite
    CAjg;0Cambrian Jim Pond Formation mafic volcanic rocks
    CAjk;0Cambrian Jim Pond Formation, felsic volcanic rocks
    CAjp;0Cambrian Jim Pond Formation siltstone, mudstone, and pelite
    CAjq;0Cambrian Jim Pond Formation graywacke
    CAls;0Cambrian Loon Stream Formation
    CAuvm;0Cambrian unnamed mafic volcanic rocks
    CDs;0Carboniferous - Devonian unnamed conglomerate and sandstone
    D1;0Devonian granite
    D1(h);0Devonian granite (hornblende accessory mineral)
    D1(m);0Devonian granite (muscovite accessory mineral)
    D1(p);0Devonian granite (pyroxene plus hornblende accessory mineral)
    D1(x);0Devonian granite (porphyritic texture)
    D1(y);0Devonian granite (granophyric texture)
    D1(z);0Devonian granite (intrusive breccia texture)
    D1-4c(h);0Devonian granite-quartz monzonite (hornblende accessory mineral)
    D1-6;0Devonian granite-quartz diorite
    D10(h);0Devonian foid-bearing syenite (hornblende accessory mineral)
    D1,2(h);0Devonian granite-granodiorite (hornblende accessory mineral)
    D1a;0Devonian alkali feldspar granite
    D1b;0Devonian granite
    D1b(h);0Devonian granite (hornblende accessory mineral)
    D1b(m);0Devonian granite (muscovite accessory mineral)
    D1b(m),3;0Devonian granite (muscovite accessory mineral), tonalite
    D2;0Devonian granodiorite
    D2(h);0Devonian granodiorite (hornblende accessory mineral)
    D2(h,x);0Devonian granodiorite (hornblende accessory mineral, porphyritic texture)
    D2(m);0Devonian granodiorite (muscovite accessory mineral)
    D2-4b(x);0Devonian granodiorite - quartz syenite (porphyritic texture)
    D2-5(h);0Devonian granodiorite - quartz monzodiorite (hornblende accessory mineral)
    D2-D6;0Devonian granodiorite - quartz diorite
    D3;0Devonian tonalite
    D4c;0Devonian quartz monzonite
    D4c(h);0Devonian quartz monzonite (hornblende accessory mineral)
    D4c(m);0Devonian quartz monzonite (muscovite accessory mineral)
    D5-6(p);0Devonian quartz monzodiorite - quartz diorite (pyroxene plus hornblende accessory mineral)
    D5,6(p);0Devonian quartz monzodiorite - quartz diorite (pyroxene plus hornblende accessory mineral)
    D6(h);0Devonian quartz diorite (hornblende accessory mineral)
    D7;0Devonian syenite
    D7(p);0Devonian syenite (pyroxene plus hornblende accessory mineral)
    D7,8(p);0Devonian syenite, monzodiorite (porphyritic texture)
    D8;0Devonian monzodiorite
    D9;0Devonian gabbro/diorite/ultramafic rocks
    D9-D6;0Devonian gabbro/diorite/ultramafic rocks - quartz diorite
    D9a;0Devonian diorite
    D9b;0Devonian gabbro
    D9b-c;0Devonian gabbro - ultramafic rocks
    Db;0Devonian Beck Pond Limestone
    Dc;0Devonian Carrabassett Formation
    DCAus;0Devonian - Cambrian unnamed sedimentary rocks
    Dch;0Devonian Chapman Sandstone
    Dcm;0Devonian Carrabassett Formation massive pelite member
    Dcq;0Devonian Carrabassett Formation quartzite member
    Dcs;0Devonian Carrabassett Formation thinly layered member
    Dcu;0Devonian Carrabassett Formation (uncertain)
    Deb;0Devonian Eastport Formation basalt member
    Deh;0Devonian Edmunds Hill Andesite
    Dep;0Devonian Eastport Formation pelite member
    Dev;0Devonian Eastport Formation mafic to felsic volcanic member
    Dh;0Devonian Hildreths Formation
    Dhb;0Devonian Hobbstown Formation
    Dhd;0Devonian Hedgehog Formation
    Dhm;0Devonian Heald Mountain Rhyolite
    Dhmd;0Devonian Heald Mountain Rhyolite dark tuff member
    Dhr;0Devonian Hartin Formation
    Dim;0Devonian Ironbound Mountain Formation
    Dl;0Devonian Littleton Formation
    Dm;0Devonian Mapleton Formation
    Dmg;0Devonian Matagamon Sandstone
    DOb;0Devonian - Ordovician Bucksport Formation
    DOdg;0Devonian - Ordovician Dideguash Formation
    DOf;0Devonian - Ordovician Flume Ridge Formation
    DOs;0Devonian - Ordovician Spruce Top Greenstone
    DOup;0Devonian - Ordovician unnamed pelite
    DOv;0Undifferentiated mafic to felsic volcanic rocks
    Dpb;0Devonian Perry Formation basalt member
    Dpk;0Devonian Parker Bog Formation
    Dpss;0Devonian Perry Formation sandstone member
    Ds;0Devonian Seboomook Formation
    DSas;0Devonian - Silurian Allagash Lake Formation mixed sedimentary rocks
    DSav;0Devonian - Silurian Allagash Lake Formation, basalt and mixed sedimentary rocks
    Dsb;0Devonian Swanback Formation
    DSbbc;0Devonian - Silurian Bell Brook Formation, conglomerate member
    DSbbs;0Devonian - Silurian Bell Brook Formation, pelite member
    DSbh;0Devonian - Silurian Bar Harbor Formation
    Dsc;0Devonian Seboomook Formation Camera Hill Greenstone
    DSca;0Devonian - Silurian Castine Formation
    DScd;0Devonian - Silurian Calderwood Formation
    Dscg;0Devonian Seboomook Formation unnamed conglomerate
    Dsd;0Devonian Seboomook Formation Day Mountain member
    Dsdc;0Devonian Seboomook Formation Day Mountain member conglomerate
    Dsdl;0Devonian Seboomook Formation Day Mountain member limestone
    DSdr;0Devonian - Silurian Daggett Ridge Formation
    DSfh;0Devonian - Silurian Fogelin Hill Formation
    DSfp;0Devonian - Silurian Frost Pond Formation
    DSfrl;0Devonian - Silurian Fish River Lake Formation
    Dsm;0Devonian Seboomook Formation Mount Blue member
    DSmd;0Devonian - Silurian Madrid Formation
    DSmig;0Devonian - Silurian undifferentiated sedimentary rocks in areas of extreme migmatization
    Dsq;0Devonian Seboomook Formation unnamed quartzite
    DSra;0Devonian - Silurian Rindgemere Formation upper member
    DSrb;0Devonian - Silurian Rindgemere Formation lower member
    DSrbl;0Devonian - Silurian Rindgemere Formation lower member limestone
    DSrbr;0Devonian - Silurian Rindgemere Formation lower member sulfidic pelite
    DSs;0Devonian - Silurian undifferentiated sedimentary rocks of the Spider Lake, Chandler Pond and Third Lake Formations
    Dst;0Devonian Seboomook Formation Temple Stream member
    DStf;0Devonian - Silurian Thorofare Andesite
    DStw;0Devonian - Silurian Towow Formation
    DStwc;0Devonian - Silurian Towow Formation conglomerate
    DSuc;0Devonian - Silurian unnamed conglomerate
    Dsug;0Devonian Seboomook Formation unnamed mafic greenstone
    Dsup;0Devonian Seboomook Formation unnamed pelite
    DSus;0Devonian - Silurian unnamed sedimentary rocks
    DSuss;0Devonian - Silurian unnamed conglomeratic sandstone
    DSuv;0Unnamed volcanic rocks
    DSv;0Undifferentiated volcanic rocks of the Spider Lake and Chandler Pond Formations
    DSvh;0Devonian - Silurian Vinalhaven Rhyolite
    Dt;0Devonian Tarratine Formation
    Dtm;0Devonian Tarratine Formation Misery Quartzite
    Dtmc;0Devonian Tarratine Formation McKenny Pond Limestone
    Dto;0Devonian Tomhegan Formation
    Dtokc;0Devonian Tomhegan Formation Kineo Rhyolite member tuffs and volcaniclastic rocks
    Dtokg;0Devonian Tomhegan Formation Kineo Rhyolite member garnet rhyolite
    Dtokm;0Tomhegan Formation, Kineo Rhyolite Member, Massive Felsite
    Dtrb;0Traveler Rhyolite, Black Cat Member
    Dtrp;0Devonian Traveler Rhyolite Pogy member
    Dtv;0Devonian Trout Valley Formation
    Duc;0Devonian unnamed conglomerate
    Dulc;0Devonian unnamed limestone conglomerate
    Dup;0Devonian unnamed pelite
    Durg;0Devonian unnamed garnet rhyolite
    Dury;0Devonian unnamed rhyolite
    Dus;0Devonian unnamed sedimentary rocks
    Duss;0Devonian unnamed lithic sandstone and conglomerate
    Duvm;0Devonian unnamed mafic volcanic rocks
    Dw;0Whiskey Quartzite
    DZar;0Devonian - Precambrian Z Appleton Ridge Formation
    DZg;0Devonian - Precambrian Z Gonic Formation
    J1;0Jurassic granite
    K(z);0Cretaceous intrusive breccia
    K1a;0Cretaceous alkali feldspar granite
    K1b;0Cretaceous granite
    K4a;0Cretaceous alkali feldspar quartz syenite
    K5;0Cretaceous quartz monzodiorite
    K6,9;0Cretaceous quartz diorite - gabbro/diorite/ultramafic rocks
    K7a;0Cretaceous alkali feldspar syenite
    K8;0Cretaceous monzodiorite
    K9;0Cretaceous gabbro/diorite/ultramafic rocks
    Kv;0Cretaceous mafic to felsic volcanic rocks
    MZ1(h);0Mesozoic granite (hornblende accessory mineral)
    MZ10;0Mesozoic foid-bearing syenite
    MZ7;0Mesozoic syenite
    MZ7a;0Mesozoic alkali feldspar syenite
    MZ9;0Mesozoic gabbro/diorite/ultramafic rocks
    MZv;0Mesozoic mafic to felsic volcanic rocks
    O1;0Ordovician granite
    O1b;0Ordovician granite
    O1b,2;0Ordovician granite, granodiorite
    O2;0Ordovician granodiorite
    O4c(h);0Ordovician quartz monzonite (hornblende accessory mineral)
    O6(h);0Ordovician quartz diorite (hornblende accessory mineral)
    O9;0Ordovician gabbro/diorite/ultramafic rocks
    Oam;0Ordovician Ammonoosuc Volcanics
    Obb;0Ordovician Blind Brook Formation
    Obh;0Ordovician Benner Hill formation
    Obhg;0Ordovician Benner Hill Formation sulfidic pelite
    Obl;0Ordovician Belle Lake Slate
    Obp;0Ordovician Bluffer Pond formation
    Obpr;0Ordovician Bluffer Pond Formation rhyolite member
    OCAb;0Ordovician - Cambrian Mount Battie Formation
    OCAc;0Ordovician - Cambrian Cookson formation
    OCAcb;0Ordovician - Cambrian Chase Brook Formation
    OCAcqr;0Ordovician - Cambrian Cookson Formation sulfidic quartzose sandstone
    OCAcr;0Ordovician - Cambrian Cookson Formation sulfidic pelite
    OCAcss;0Ordovician - Cambrian Cookson Formation lithic sandstone and pelite
    OCAcv;0Ordovician - Cambrian Cookson Formation mafic to felsic volcanic rocks
    OCAd;0Ordovician - Cambrian Dead River formation
    OCAdp;0Ordovician - Cambrian Dead River formation lower member
    OCAdq;0Ordovician - Cambrian Dead River formation upper member
    OCAhm;0Ordovician - Cambrian Hurd Mountain formation
    OCAhmb;0Ordovician - Cambrian Hurd Mountain formation basalt member
    OCAme;0Ordovician - Cambrian Megunticook Formation
    OCAmec;0Megunticook Formation, Polymictic Conglomerate Member
    OCAmel;0Megunticook Formation, Limestone Member
    OCAp;0Penobscot Formation
    OCApg;0Penobscot Formation, Basalt Member
    OCApmig;0Ordovician - Cambrian Penobscot Formation extensively migmatized area
    OCAs;0Ordovician - Cambrian Sawmill Formation
    OCAsc;0Ordovician - Cambrian Southeast Cove Formation
    OCAsd;0Ordovician - Cambrian Saint Daniel formation
    OCAsdq;0Ordovician - Cambrian Saint Daniel formation quartzite and red and green shale
    OCAus;0Ordovician - Cambrian unnamed sedimentary rocks
    OCAuv;0Ordovician - Cambrian unnamed volcanic rocks
    OCAz;0Ordovician - Cambrian Aziscohos Formation
    Ocl;0Ordovician Chase lake formation
    Oclc;0Ordovician Chase lake Formation conglomerate member
    Ocls;0Ordovician Chase Lake Formation sandstone and pelite member
    Ocr;0Ordovician Chandler Ridge Formation
    Odmp;0Ordovician sandstone and pelite of the Depot Mountain sequence
    Odms;0Ordovician graywacke of the Depot Mountain sequence
    Odmv;0Ordovician tuff of the Depot Mountain sequence
    Odw;0Ordovician Dry Wall Volcanic rocks
    Ohh;0Ordovician Holmes Hole Formation
    Ok;0Ordovician Kennebec Formation
    Okmg;0Ordovician Kamankeag Formation basalt and graywacke member
    Okms;0Ordovician Kamankeag Formation pelite member
    Olm;0Ordovician Lobster Mountain volcanic complex
    Olma;0Ordovician Lobster Mountain volcanic complex andesite member
    Olmb;0Ordovician Lobster Mountain volcanic complex basalt member
    Om;0Ordovician Madawaska Lake Formation
    Oml;0Ordovician Munsungun Lake Formation
    Opm;0Ordovician Pile Mountain Argillite
    Oq;0Ordovician Quimby formation
    Oqg;0Ordovician Quimby formation graywacke member
    Oqs;0Ordovician Quimby formation pelite member
    Oqv;0Ordovician Quimby formation rhyolitic volcanic member
    Osb;0Ordovician Shin Brook Formation
    Oup;0Ordovician unnamed pelite
    Our;0Ordovician unnamed sulfidic pelite
    Ous;0Ordovician unnamed sandstone and pelite
    Ouss;0Ordovician unnamed sandstone
    Oussp;0Ordovician unnamed quartz sandstone and pelite
    Ouv;0Ordovician unnamed volcanic rocks
    Ouvf;0Ordovician unnamed felsic volcanic rocks
    Ouvm;0Ordovician unnamed mafic volcanic rocks
    Ouvs;0Ordovician unnamed volcanic and sedimentary rocks
    Ow;0Ordovician Winterville Formation
    Owc;0Ordovician Wassataquoik Chert
    OZc;0Ordovician - Precambrian Z Cushing Formation
    OZce;0Ordovician - Precambrian Z Cape Elizabeth Formation
    OZceq;0Ordovician - Precambrian Z Cape Elizabeth Formation quartzite member
    OZcev;0Ordovician - Precambrian Z Cape Elizabeth Formation mafic to felsic volcanic member
    OZcf;0Ordovician - Precambrian Z Columbia Falls Formation
    OZcg;0Ordovician - Precambrian Z Cushing Formation mafic volcanic member
    OZcl;0Ordovician - Precambrian Z Cushing Formation limestone
    OZcq;0Ordovician - Precambrian Z Cushing Formation quartzite
    OZcr;0Ordovician - Precambrian Z Cushing Formation sulfidic pelite
    OZe;0Ordovician - Precambrian Z Ellsworth formation
    OZef;0Ordovician - Precambrian Z Ellsworth formation quartz granofels member
    OZev;0Ordovician - Precambrian Z Ellsworth formation greenstone member
    OZj;0Ordovician - Precambrian Z Jewell Formation
    OZm;0Ordovician - Precambrian Z Macworth formation
    OZpg;0Ordovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block
    OZpgl;0Ordovician - Precambrian Z calc-silicate rocks of the Passagassawakeag block
    OZpgs;0Ordovician - Precambrian Z interbedded pelite and quartz sandstone of the Passagassawakeag block
    OZs;0Ordovician - Precambrian Z Spring Point Formation
    OZsc;0Ordovician - Precambrian Z Scarboro and Diamond Island formations
    OZsk;0Ordovician - Precambrian Z Spurwink Limestone
    OZus;0Ordovician - Precambrian Z unnamed sedimentary rocks
    pCAc;0Precambrian gneisses of the Chain Lakes Massif
    S1;0Silurian granite
    S9;0Silurian gabbro/diorite/ultramafic rocks
    S9c;0Silurian ultramafic rocks
    Sak;0Silurian Ames Knob formation
    Sbb;0Silurian Burnt Brook Formation
    Sc;0Silurian Capens Formation
    Scgu;0Silurian undifferentiated conglomerates and coarse-grained sandstones
    Sdb;0Silurian Dennys formation basalt member
    Sdv;0Silurian Dennys Formation mafic to felsic volcanic rock member
    Se;0Silurian Edmunds formation
    Sf;0Silurian Frenchville Formation
    Sfm;0Silurian rocks of the Fivemile Brook sequence
    Sfmg;0Silurian greenstone rocks of the Fivemile Brook sequence
    Sg;0Silurian Greenvale Cove Formation
    Sh;0Silurian Hersey formation
    Shm;0Silurian Hardwood Mountain Formation
    Sj;0Silurian Jemtland Formation
    Slb;0Silurian Leighton Formation basalt member
    Slp;0Silurian Leighton Formation pelite member
    Slv;0Silurian Leighton Formation mafic to felsic volcanic rock member
    Smm;0Silurian Maple Mountain Formation
    Sns;0Silurian New Sweden Formation
    So;0Silurian Oak Bay formation
    SOar;0Silurian - Ordovician Aroostook River Formation
    SOcm;0Silurian - Ordovician Carys Mills Formation
    SOcml;0Silurian - Ordovician Carys Mills Formation lower member
    SOcms;0Silurian - Ordovician Carys Mills Formation pelite member
    SOdb;0Silurian - Ordovician Dunn Brook formation
    SOf;0Silurian - Ordovician Frontenac Formation
    SOfc;0Silurian - Ordovician Frontenac Formation Canada Falls volcanic member
    SOlb;0Silurian - Ordovician Lobster Lake Formation
    SOm;0Silurian - Ordovician Mattawamkeag Formation
    SOmh;0Silurian - Ordovician Mars Hill Conglomerate
    SOn;0Silurian - Ordovician Nine Lake formation
    SOuc;0Silurian - Ordovician unnamed conglomerate
    SOup;0Silurian - Ordovician unnamed pelite
    SOur;0Silurian - Ordovician unnamed sulfidic pelite
    SOus;0Silurian - Ordovician unnamed sedimentary rocks
    SOuv;0Silurian - Ordovician unnamed volcanic rocks
    SOv;0Silurian - Ordovician Vassalboro formation
    SOw;0Silurian - Ordovician Vassalboro Formation volcanic rocks
    Sp;0Silurian Perry Mountain formation
    Spu;0Silurian undifferentiated pelites and sandstones
    Sqp;0Silurian Quoddy formation pelite member
    Sqv;0Silurian Quoddy Formation mafic to felsic volcanic rock member
    Sqvu;0Silurian Quoddy Formation undifferentiated volcanic rock member
    Sr;0Silurian Rangeley formation
    Sra;0Silurian Rangeley Formation "A" member
    Srac;0Silurian Rangeley Formation "A" member lithic sandstone"
    Srb;0Silurian Rangeley Formation "B" member
    Src;0Silurian Rangeley Formation "C" member
    Srm;0Silurian Rocky Mountain Quartz Latite
    Srp;0Silurian Ripogenus Formation
    Ss;0Silurian Sangerville Formation
    Ssa;0Silurian Sangerville Formation Anasagunticook member
    Ssal;0Silurian Sangerville Formation Anasagunticook member limestone
    Ssar;0Silurian Sangerville Formation Anasagunticook member sulfidic pelite
    Ssc;0Silurian Sangerville Formation conglomerate member
    Ssf;0Silurian Smalls Falls Formation
    Ssfu;0Silurian Smalls Falls Formation (uncertain)
    Ssl;0Silurian Sangerville Formation limestone member
    Ssm;0Silurian Smyrna Mills Formation
    Sspm;0Silurian Sangerville Formation Patch Mountain member
    Sspr;0Silurian Spragueville Formation
    Ssr;0Silurian Sangerville Formation sulfidic pelite member
    Ssu;0Silurian undifferentiated sandstones
    Stf;0Silurian The Forks Formation
    Suc;0Silurian unnamed conglomerate
    Sucs;0Silurian unnamed conglomerate and sandstone
    Sul;0Silurian unnamed limestone
    Sur;0Silurian Unnamed sulfidic pelite
    Sus;0Silurian unnamed sedimentary rocks
    Suss;0Silurian unnamed sandstone
    Suvm;0Silurian unnamed mafic volcanic rocks
    Suvs;0Silurian unnamed volcanic and sedimentary rocks
    Sw;0Silurian Waterville Formation
    Swb;0Silurian West Branch Volcanic Rocks
    Swl;0Silurian Waterville Formation limestone member
    SZ9c;0Silurian - Precambrian Z ultramafic rocks
    SZb;0Silurian - Precambrian Z Berwick Formation
    SZe;0Silurian - Precambrian Z Eliot Formation
    SZk;0Silurian - Precambrian Z Kittery Formation
    water;0Water
    Zcb;0Precambrian Z Coombs Limestone
    Zi;0Precambrian Z rocks of Islesboro
    Zil;0Precambrian Z rocks of Islesboro limestone
    Znh;0Precambrian Z North Haven Formation
    Zop;0Precambrian Z Ogier Point Formation
    Zr;0Precambrian Z Rye Formation
    Zrk;0Precambrian Z Rockport Formation
    unit_link
    composite map label = ST + sgmc_label This creates a unique identifier for every unit in the CONUS (continental United States) covers.

    type: character width: 18 output width: 18 (Source: Doug Stoeser (USGS))
    ValueDefinition
    MEC1;0Carboniferous granite undivided
    MEC1(m);0Carboniferous granite (muscovite accessory mineral)
    MEC1b(m);0Carboniferous alkali feldspar granite (muscovite accessory mineral)
    MEC1b(m,s);0Carboniferous alkali feldspar granite (muscovite accessory, abundant sedimentary inclusions)
    MEC4a;0Carboniferous alkali feldspar quartz syenite
    MEC7;0Carboniferous syenite
    MEC9;0Carboniferous gabbro/diorite/ultramafic rocks
    MECA6;0Cambrian quartz diorite
    MECA9;0Cambrian gabbro/diorite/ultramafic rocks
    MECA9c;0Cambrian ultramafic rocks
    MECAclf;0Cambrian Caucomgomoc Lake Formation, quartzwacke and pelite member
    MECAclg;0Cambrian Caucomgomoc Lake Formation, basalt member
    MECAgp;0Cambrian Grand Pitch Formation
    MECAh;0Cambrian Hurricane Mountain Formation
    MECAha;0Cambrian Hurricane Mountain Formation, Amphibolite and Greenschist
    MECAhmg;0Cambrian Hurricane Mountain Formation, metagabbro
    MECAhpx;0Cambrian Hurricane Mountain Formation, metapyroxenite
    MECAhq;0Cambrian Hurricane Mountain Formation, black and gray metaquartzite
    MECAhqw;0Cambrian Hurricane Mountain Formation, metaquartzwacke
    MECAhr;0Cambrian Hurricane Mountain Formation, metafelsite
    MECAj;0Cambrian Jim Pond Formation
    MECAjf;0Cambrian Jim Pond Formation, quartzwacke and pelite
    MECAjg;0Cambrian Jim Pond Formation mafic volcanic rocks
    MECAjk;0Cambrian Jim Pond Formation, felsic volcanic rocks
    MECAjp;0Cambrian Jim Pond Formation siltstone, mudstone, and pelite
    MECAjq;0Cambrian Jim Pond Formation graywacke
    MECAls;0Cambrian Loon Stream Formation
    MECAuvm;0Cambrian unnamed mafic volcanic rocks
    MECDs;0Carboniferous - Devonian unnamed conglomerate and sandstone
    MED1;0Devonian granite
    MED1(h);0Devonian granite (hornblende accessory mineral)
    MED1(m);0Devonian granite (muscovite accessory mineral)
    MED1(p);0Devonian granite (pyroxene plus hornblende accessory mineral)
    MED1(x);0Devonian granite (porphyritic texture)
    MED1(y);0Devonian granite (granophyric texture)
    MED1(z);0Devonian granite (intrusive breccia texture)
    MED1-4c(h);0Devonian granite-quartz monzonite (hornblende accessory mineral)
    MED1-6;0Devonian granite-quartz diorite
    MED10(h);0Devonian foid-bearing syenite (hornblende accessory mineral)
    MED1,2(h);0Devonian granite-granodiorite (hornblende accessory mineral)
    MED1a;0Devonian alkali feldspar granite
    MED1b;0Devonian granite
    MED1b(h);0Devonian granite (hornblende accessory mineral)
    MED1b(m);0Devonian granite (muscovite accessory mineral)
    MED1b(m),3;0Devonian granite (muscovite accessory mineral), tonalite
    MED2;0Devonian granodiorite
    MED2(h);0Devonian granodiorite (hornblende accessory mineral)
    MED2(h,x);0Devonian granodiorite (hornblende accessory mineral, porphyritic texture)
    MED2(m);0Devonian granodiorite (muscovite accessory mineral)
    MED2-4b(x);0Devonian granodiorite - quartz syenite (porphyritic texture)
    MED2-5(h);0Devonian granodiorite - quartz monzodiorite (hornblende accessory mineral)
    MED2-D6;0Devonian granodiorite - quartz diorite
    MED3;0Devonian tonalite
    MED4c;0Devonian quartz monzonite
    MED4c(h);0Devonian quartz monzonite (hornblende accessory mineral)
    MED4c(m);0Devonian quartz monzonite (muscovite accessory mineral)
    MED5-6(p);0Devonian quartz monzodiorite - quartz diorite (pyroxene plus hornblende accessory mineral)
    MED5,6(p);0Devonian quartz monzodiorite - quartz diorite (pyroxene plus hornblende accessory mineral)
    MED6(h);0Devonian quartz diorite (hornblende accessory mineral)
    MED7;0Devonian syenite
    MED7(p);0Devonian syenite (pyroxene plus hornblende accessory mineral)
    MED7,8(p);0Devonian syenite, monzodiorite (porphyritic texture)
    MED8;0Devonian monzodiorite
    MED9;0Devonian gabbro/diorite/ultramafic rocks
    MED9-D6;0Devonian gabbro/diorite/ultramafic rocks - quartz diorite
    MED9a;0Devonian diorite
    MED9b;0Devonian gabbro
    MED9b-c;0Devonian gabbro - ultramafic rocks
    MEDb;0Devonian Beck Pond Limestone
    MEDc;0Devonian Carrabassett Formation
    MEDCAus;0Devonian - Cambrian unnamed sedimentary rocks
    MEDch;0Devonian Chapman Sandstone
    MEDcm;0Devonian Carrabassett Formation massive pelite member
    MEDcq;0Devonian Carrabassett Formation quartzite member
    MEDcs;0Devonian Carrabassett Formation thinly layered member
    MEDcu;0Devonian Carrabassett Formation (uncertain)
    MEDeb;0Devonian Eastport Formation basalt member
    MEDeh;0Devonian Edmunds Hill Andesite
    MEDep;0Devonian Eastport Formation pelite member
    MEDev;0Devonian Eastport Formation mafic to felsic volcanic member
    MEDh;0Devonian Hildreths Formation
    MEDhb;0Devonian Hobbstown Formation
    MEDhd;0Devonian Hedgehog Formation
    MEDhm;0Devonian Heald Mountain Rhyolite
    MEDhmd;0Devonian Heald Mountain Rhyolite dark tuff member
    MEDhr;0Devonian Hartin Formation
    MEDim;0Devonian Ironbound Mountain Formation
    MEDl;0Devonian Littleton Formation
    MEDm;0Devonian Mapleton Formation
    MEDmg;0Devonian Matagamon Sandstone
    MEDOb;0Devonian - Ordovician Bucksport Formation
    MEDOdg;0Devonian - Ordovician Dideguash Formation
    MEDOf;0Devonian - Ordovician Flume Ridge Formation
    MEDOs;0Devonian - Ordovician Spruce Top Greenstone
    MEDOup;0Devonian - Ordovician unnamed pelite
    MEDOv;0Undifferentiated mafic to felsic volcanic rocks
    MEDpb;0Devonian Perry Formation basalt member
    MEDpk;0Devonian Parker Bog Formation
    MEDpss;0Devonian Perry Formation sandstone member
    MEDs;0Devonian Seboomook Formation
    MEDSas;0Devonian - Silurian Allagash Lake Formation mixed sedimentary rocks
    MEDSav;0Devonian - Silurian Allagash Lake Formation, basalt and mixed sedimentary rocks
    MEDsb;0Devonian Swanback Formation
    MEDSbbc;0Devonian - Silurian Bell Brook Formation, conglomerate member
    MEDSbbs;0Devonian - Silurian Bell Brook Formation, pelite member
    MEDSbh;0Devonian - Silurian Bar Harbor Formation
    MEDsc;0Devonian Seboomook Formation Camera Hill Greenstone
    MEDSca;0Devonian - Silurian Castine Formation
    MEDScd;0Devonian - Silurian Calderwood Formation
    MEDscg;0Devonian Seboomook Formation unnamed conglomerate
    MEDsd;0Devonian Seboomook Formation Day Mountain member
    MEDsdc;0Devonian Seboomook Formation Day Mountain member conglomerate
    MEDsdl;0Devonian Seboomook Formation Day Mountain member limestone
    MEDSdr;0Devonian - Silurian Daggett Ridge Formation
    MEDSfh;0Devonian - Silurian Fogelin Hill Formation
    MEDSfp;0Devonian - Silurian Frost Pond Formation
    MEDSfrl;0Devonian - Silurian Fish River Lake Formation
    MEDsm;0Devonian Seboomook Formation Mount Blue member
    MEDSmd;0Devonian - Silurian Madrid Formation
    MEDSmig;0Devonian - Silurian undifferentiated sedimentary rocks in areas of extreme migmatization
    MEDsq;0Devonian Seboomook Formation unnamed quartzite
    MEDSra;0Devonian - Silurian Rindgemere Formation upper member
    MEDSrb;0Devonian - Silurian Rindgemere Formation lower member
    MEDSrbl;0Devonian - Silurian Rindgemere Formation lower member limestone
    MEDSrbr;0Devonian - Silurian Rindgemere Formation lower member sulfidic pelite
    MEDSs;0Devonian - Silurian undifferentiated sedimentary rocks of the Spider Lake, Chandler Pond and Third Lake Formations
    MEDst;0Devonian Seboomook Formation Temple Stream member
    MEDStf;0Devonian - Silurian Thorofare Andesite
    MEDStw;0Devonian - Silurian Towow Formation
    MEDStwc;0Devonian - Silurian Towow Formation conglomerate
    MEDSuc;0Devonian - Silurian unnamed conglomerate
    MEDsug;0Devonian Seboomook Formation unnamed mafic greenstone
    MEDsup;0Devonian Seboomook Formation unnamed pelite
    MEDSus;0Devonian - Silurian unnamed sedimentary rocks
    MEDSuss;0Devonian - Silurian unnamed conglomeratic sandstone
    MEDSuv;0Unnamed volcanic rocks
    MEDSv;0Undifferentiated volcanic rocks of the Spider Lake and Chandler Pond Formations
    MEDSvh;0Devonian - Silurian Vinalhaven Rhyolite
    MEDt;0Devonian Tarratine Formation
    MEDtm;0Devonian Tarratine Formation Misery Quartzite
    MEDtmc;0Devonian Tarratine Formation McKenny Pond Limestone
    MEDto;0Devonian Tomhegan Formation
    MEDtokc;0Devonian Tomhegan Formation Kineo Rhyolite member tuffs and volcaniclastic rocks
    MEDtokg;0Devonian Tomhegan Formation Kineo Rhyolite member garnet rhyolite
    MEDtokm;0Tomhegan Formation, Kineo Rhyolite Member, Massive Felsite
    MEDtrb;0Traveler Rhyolite, Black Cat Member
    MEDtrp;0Devonian Traveler Rhyolite Pogy member
    MEDtv;0Devonian Trout Valley Formation
    MEDuc;0Devonian unnamed conglomerate
    MEDulc;0Devonian unnamed limestone conglomerate
    MEDup;0Devonian unnamed pelite
    MEDurg;0Devonian unnamed garnet rhyolite
    MEDury;0Devonian unnamed rhyolite
    MEDus;0Devonian unnamed sedimentary rocks
    MEDuss;0Devonian unnamed lithic sandstone and conglomerate
    MEDuvm;0Devonian unnamed mafic volcanic rocks
    MEDw;0Whiskey Quartzite
    MEDZar;0Devonian - Precambrian Z Appleton Ridge Formation
    MEDZg;0Devonian - Precambrian Z Gonic Formation
    MEJ1;0Jurassic granite
    MEK(z);0Cretaceous intrusive breccia
    MEK1a;0Cretaceous alkali feldspar granite
    MEK1b;0Cretaceous granite
    MEK4a;0Cretaceous alkali feldspar quartz syenite
    MEK5;0Cretaceous quartz monzodiorite
    MEK6,9;0Cretaceous quartz diorite - gabbro/diorite/ultramafic rocks
    MEK7a;0Cretaceous alkali feldspar syenite
    MEK8;0Cretaceous monzodiorite
    MEK9;0Cretaceous gabbro/diorite/ultramafic rocks
    MEKv;0Cretaceous mafic to felsic volcanic rocks
    MEMZ1(h);0Mesozoic granite (hornblende accessory mineral)
    MEMZ10;0Mesozoic foid-bearing syenite
    MEMZ7;0Mesozoic syenite
    MEMZ7a;0Mesozoic alkali feldspar syenite
    MEMZ9;0Mesozoic gabbro/diorite/ultramafic rocks
    MEMZv;0Mesozoic mafic to felsic volcanic rocks
    MEO1;0Ordovician granite
    MEO1b;0Ordovician granite
    MEO1b,2;0Ordovician granite, granodiorite
    MEO2;0Ordovician granodiorite
    MEO4c(h);0Ordovician quartz monzonite (hornblende accessory mineral)
    MEO6(h);0Ordovician quartz diorite (hornblende accessory mineral)
    MEO9;0Ordovician gabbro/diorite/ultramafic rocks
    MEOam;0Ordovician Ammonoosuc Volcanics
    MEObb;0Ordovician Blind Brook Formation
    MEObh;0Ordovician Benner Hill formation
    MEObhg;0Ordovician Benner Hill Formation sulfidic pelite
    MEObl;0Ordovician Belle Lake Slate
    MEObp;0Ordovician Bluffer Pond formation
    MEObpr;0Ordovician Bluffer Pond Formation rhyolite member
    MEOCAb;0Ordovician - Cambrian Mount Battie Formation
    MEOCAc;0Ordovician - Cambrian Cookson formation
    MEOCAcb;0Ordovician - Cambrian Chase Brook Formation
    MEOCAcqr;0Ordovician - Cambrian Cookson Formation sulfidic quartzose sandstone
    MEOCAcr;0Ordovician - Cambrian Cookson Formation sulfidic pelite
    MEOCAcss;0Ordovician - Cambrian Cookson Formation lithic sandstone and pelite
    MEOCAcv;0Ordovician - Cambrian Cookson Formation mafic to felsic volcanic rocks
    MEOCAd;0Ordovician - Cambrian Dead River formation
    MEOCAdp;0Ordovician - Cambrian Dead River formation lower member
    MEOCAdq;0Ordovician - Cambrian Dead River formation upper member
    MEOCAhm;0Ordovician - Cambrian Hurd Mountain formation
    MEOCAhmb;0Ordovician - Cambrian Hurd Mountain formation basalt member
    MEOCAme;0Ordovician - Cambrian Megunticook Formation
    MEOCAmec;0Megunticook Formation, Polymictic Conglomerate Member
    MEOCAmel;0Megunticook Formation, Limestone Member
    MEOCAp;0Penobscot Formation
    MEOCApg;0Penobscot Formation, Basalt Member
    MEOCApmig;0Ordovician - Cambrian Penobscot Formation extensively migmatized area
    MEOCAs;0Ordovician - Cambrian Sawmill Formation
    MEOCAsc;0Ordovician - Cambrian Southeast Cove Formation
    MEOCAsd;0Ordovician - Cambrian Saint Daniel formation
    MEOCAsdq;0Ordovician - Cambrian Saint Daniel formation quartzite and red and green shale
    MEOCAus;0Ordovician - Cambrian unnamed sedimentary rocks
    MEOCAuv;0Ordovician - Cambrian unnamed volcanic rocks
    MEOCAz;0Ordovician - Cambrian Aziscohos Formation
    MEOcl;0Ordovician Chase lake formation
    MEOclc;0Ordovician Chase lake Formation conglomerate member
    MEOcls;0Ordovician Chase Lake Formation sandstone and pelite member
    MEOcr;0Ordovician Chandler Ridge Formation
    MEOdmp;0Ordovician sandstone and pelite of the Depot Mountain sequence
    MEOdms;0Ordovician graywacke of the Depot Mountain sequence
    MEOdmv;0Ordovician tuff of the Depot Mountain sequence
    MEOdw;0Ordovician Dry Wall Volcanic rocks
    MEOhh;0Ordovician Holmes Hole Formation
    MEOk;0Ordovician Kennebec Formation
    MEOkmg;0Ordovician Kamankeag Formation basalt and graywacke member
    MEOkms;0Ordovician Kamankeag Formation pelite member
    MEOlm;0Ordovician Lobster Mountain volcanic complex
    MEOlma;0Ordovician Lobster Mountain volcanic complex andesite member
    MEOlmb;0Ordovician Lobster Mountain volcanic complex basalt member
    MEOm;0Ordovician Madawaska Lake Formation
    MEOml;0Ordovician Munsungun Lake Formation
    MEOpm;0Ordovician Pile Mountain Argillite
    MEOq;0Ordovician Quimby formation
    MEOqg;0Ordovician Quimby formation graywacke member
    MEOqs;0Ordovician Quimby formation pelite member
    MEOqv;0Ordovician Quimby formation rhyolitic volcanic member
    MEOsb;0Ordovician Shin Brook Formation
    MEOup;0Ordovician unnamed pelite
    MEOur;0Ordovician unnamed sulfidic pelite
    MEOus;0Ordovician unnamed sandstone and pelite
    MEOuss;0Ordovician unnamed sandstone
    MEOussp;0Ordovician unnamed quartz sandstone and pelite
    MEOuv;0Ordovician unnamed volcanic rocks
    MEOuvf;0Ordovician unnamed felsic volcanic rocks
    MEOuvm;0Ordovician unnamed mafic volcanic rocks
    MEOuvs;0Ordovician unnamed volcanic and sedimentary rocks
    MEOw;0Ordovician Winterville Formation
    MEOwc;0Ordovician Wassataquoik Chert
    MEOZc;0Ordovician - Precambrian Z Cushing Formation
    MEOZce;0Ordovician - Precambrian Z Cape Elizabeth Formation
    MEOZceq;0Ordovician - Precambrian Z Cape Elizabeth Formation quartzite member
    MEOZcev;0Ordovician - Precambrian Z Cape Elizabeth Formation mafic to felsic volcanic member
    MEOZcf;0Ordovician - Precambrian Z Columbia Falls Formation
    MEOZcg;0Ordovician - Precambrian Z Cushing Formation mafic volcanic member
    MEOZcl;0Ordovician - Precambrian Z Cushing Formation limestone
    MEOZcq;0Ordovician - Precambrian Z Cushing Formation quartzite
    MEOZcr;0Ordovician - Precambrian Z Cushing Formation sulfidic pelite
    MEOZe;0Ordovician - Precambrian Z Ellsworth formation
    MEOZef;0Ordovician - Precambrian Z Ellsworth formation quartz granofels member
    MEOZev;0Ordovician - Precambrian Z Ellsworth formation greenstone member
    MEOZj;0Ordovician - Precambrian Z Jewell Formation
    MEOZm;0Ordovician - Precambrian Z Macworth formation
    MEOZpg;0Ordovician - Precambrian Z metasedimentary and metavolcanic rocks of the Passagassawakeag block
    MEOZpgl;0Ordovician - Precambrian Z calc-silicate rocks of the Passagassawakeag block
    MEOZpgs;0Ordovician - Precambrian Z interbedded pelite and quartz sandstone of the Passagassawakeag block
    MEOZs;0Ordovician - Precambrian Z Spring Point Formation
    MEOZsc;0Ordovician - Precambrian Z Scarboro and Diamond Island formations
    MEOZsk;0Ordovician - Precambrian Z Spurwink Limestone
    MEOZus;0Ordovician - Precambrian Z unnamed sedimentary rocks
    MEpCAc;0Precambrian gneisses of the Chain Lakes Massif
    MES1;0Silurian granite
    MES9;0Silurian gabbro/diorite/ultramafic rocks
    MES9c;0Silurian ultramafic rocks
    MESak;0Silurian Ames Knob formation
    MESbb;0Silurian Burnt Brook Formation
    MESc;0Silurian Capens Formation
    MEScgu;0Silurian undifferentiated conglomerates and coarse-grained sandstones
    MESdb;0Silurian Dennys formation basalt member
    MESdv;0Silurian Dennys Formation mafic to felsic volcanic rock member
    MESe;0Silurian Edmunds formation
    MESf;0Silurian Frenchville Formation
    MESfm;0Silurian rocks of the Fivemile Brook sequence
    MESfmg;0Silurian greenstone rocks of the Fivemile Brook sequence
    MESg;0Silurian Greenvale Cove Formation
    MESh;0Silurian Hersey formation
    MEShm;0Silurian Hardwood Mountain Formation
    MESj;0Silurian Jemtland Formation
    MESlb;0Silurian Leighton Formation basalt member
    MESlp;0Silurian Leighton Formation pelite member
    MESlv;0Silurian Leighton Formation mafic to felsic volcanic rock member
    MESmm;0Silurian Maple Mountain Formation
    MESns;0Silurian New Sweden Formation
    MESo;0Silurian Oak Bay formation
    MESOar;0Silurian - Ordovician Aroostook River Formation
    MESOcm;0Silurian - Ordovician Carys Mills Formation
    MESOcml;0Silurian - Ordovician Carys Mills Formation lower member
    MESOcms;0Silurian - Ordovician Carys Mills Formation pelite member
    MESOdb;0Silurian - Ordovician Dunn Brook formation
    MESOf;0Silurian - Ordovician Frontenac Formation
    MESOfc;0Silurian - Ordovician Frontenac Formation Canada Falls volcanic member
    MESOlb;0Silurian - Ordovician Lobster Lake Formation
    MESOm;0Silurian - Ordovician Mattawamkeag Formation
    MESOmh;0Silurian - Ordovician Mars Hill Conglomerate
    MESOn;0Silurian - Ordovician Nine Lake formation
    MESOuc;0Silurian - Ordovician unnamed conglomerate
    MESOup;0Silurian - Ordovician unnamed pelite
    MESOur;0Silurian - Ordovician unnamed sulfidic pelite
    MESOus;0Silurian - Ordovician unnamed sedimentary rocks
    MESOuv;0Silurian - Ordovician unnamed volcanic rocks
    MESOv;0Silurian - Ordovician Vassalboro formation
    MESOw;0Silurian - Ordovician Vassalboro Formation volcanic rocks
    MESp;0Silurian Perry Mountain formation
    MESpu;0Silurian undifferentiated pelites and sandstones
    MESqp;0Silurian Quoddy formation pelite member
    MESqv;0Silurian Quoddy Formation mafic to felsic volcanic rock member
    MESqvu;0Silurian Quoddy Formation undifferentiated volcanic rock member
    MESr;0Silurian Rangeley formation
    MESra;0Silurian Rangeley Formation "A" member
    MESrac;0Silurian Rangeley Formation "A" member lithic sandstone"
    MESrb;0Silurian Rangeley Formation "B" member
    MESrc;0Silurian Rangeley Formation "C" member
    MESrm;0Silurian Rocky Mountain Quartz Latite
    MESrp;0Silurian Ripogenus Formation
    MESs;0Silurian Sangerville Formation
    MESsa;0Silurian Sangerville Formation Anasagunticook member
    MESsal;0Silurian Sangerville Formation Anasagunticook member limestone
    MESsar;0Silurian Sangerville Formation Anasagunticook member sulfidic pelite
    MESsc;0Silurian Sangerville Formation conglomerate member
    MESsf;0Silurian Smalls Falls Formation
    MESsfu;0Silurian Smalls Falls Formation (uncertain)
    MESsl;0Silurian Sangerville Formation limestone member
    MESsm;0Silurian Smyrna Mills Formation
    MESspm;0Silurian Sangerville Formation Patch Mountain member
    MESspr;0Silurian Spragueville Formation
    MESsr;0Silurian Sangerville Formation sulfidic pelite member
    MESsu;0Silurian undifferentiated sandstones
    MEStf;0Silurian The Forks Formation
    MESuc;0Silurian unnamed conglomerate
    MESucs;0Silurian unnamed conglomerate and sandstone
    MESul;0Silurian unnamed limestone
    MESur;0Silurian Unnamed sulfidic pelite
    MESus;0Silurian unnamed sedimentary rocks
    MESuss;0Silurian unnamed sandstone
    MESuvm;0Silurian unnamed mafic volcanic rocks
    MESuvs;0Silurian unnamed volcanic and sedimentary rocks
    MESw;0Silurian Waterville Formation
    MESwb;0Silurian West Branch Volcanic Rocks
    MESwl;0Silurian Waterville Formation limestone member
    MESZ9c;0Silurian - Precambrian Z ultramafic rocks
    MESZb;0Silurian - Precambrian Z Berwick Formation
    MESZe;0Silurian - Precambrian Z Eliot Formation
    MESZk;0Silurian - Precambrian Z Kittery Formation
    MEwater;0Water
    MEZcb;0Precambrian Z Coombs Limestone
    MEZi;0Precambrian Z rocks of Islesboro
    MEZil;0Precambrian Z rocks of Islesboro limestone
    MEZnh;0Precambrian Z North Haven Formation
    MEZop;0Precambrian Z Ogier Point Formation
    MEZr;0Precambrian Z Rye Formation
    MEZrk;0Precambrian Z Rockport Formation
    source
    An alphanumeric code (e.g. US001) that designates the source material used.

    type: character width: 6 output width: 8 (Source: Doug Stoeser (USGS))
    ValueDefinition
    ME001Maine Geological Survey (MGS), 1995, bedrock, Augusta, Maine, Maine Office of Geographic Information Systems, scale 1:500,000.
    US001Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationNENJ.pdf)
    unit_age
    The geologic age from the source map used.

    type: character width: 60 output width: 60 (Source: Doug Stoeser (USGS))
    ValueDefinition
    Cambrian 
    Carboniferous 
    Carboniferous and/or Devonian 
    Cretaceous 
    Devonian 
    Devonian - Ordovician 
    Devonian – Precambrian Z 
    Devonian - Silurian 
    Devonian-Cambrian 
    Holocene 
    Jurassic 
    Mesozoic 
    Ordovician 
    Ordovician - Cambrian 
    Ordovician – Precambrian Z 
    Precambrian 
    Precambrian Z 
    Silurian 
    Silurian - Ordovician 
    Silurian – Precambrian Z 
    Silurian–Devonian 
    rocktype1
    The predominant lithology found in the formation.

    type: character width: 40 output width: 40 (Source: Johnson Lith Class 6.1a)
    ValueDefinition
    alkali syenite 
    alkali-granite (alaskite) 
    amphibolite 
    andesite 
    arenite 
    arkose 
    basalt 
    breccia 
    calc-silicate rock 
    chert 
    conglomerate 
    dacite 
    diorite 
    felsic gneiss 
    felsic metavolcanic rock 
    gabbro 
    gneiss 
    granite 
    granodiorite 
    granofels 
    graywacke 
    greenstone 
    limestone 
    mafic gneiss 
    mafic metavolcanic rock 
    mafic volcanic rock 
    marble 
    mélange 
    metagabbro 
    metasedimentary rock 
    mica schist 
    migmatite 
    monzodiorite 
    phyllite 
    quartz diorite 
    quartz latite 
    quartz monzodiorite 
    quartz monzonite 
    quartz syenite 
    quartz-feldspar schist 
    quartzite 
    rhyolite 
    sandstone 
    siltstone 
    slate 
    syenite 
    tonalite 
    tuff 
    ultramafic intrusive rock 
    volcanic rock (aphanitic) 
    water 
    rocktype2
    The second most predominant lithology in the formation.

    type: character width: 40 output width: 40 (Source: Johnson Lith Class 6.1)
    ValueDefinition
    amphibolite 
    arkose 
    calc-silicate schist 
    conglomerate 
    diorite 
    dolostone (dolomite) 
    felsic gneiss 
    felsic metavolcanic rock 
    felsic volcanic rock 
    gabbro 
    granodiorite 
    graywacke 
    greenstone 
    iron formation 
    limestone 
    mafic gneiss 
    mafic volcanic rock 
    marble 
    metavolcanic rock 
    mica schist 
    monzodiorite 
    mudstone 
    quartz diorite 
    quartz-feldspar schist 
    quartzite 
    rhyolite 
    sandstone 
    schist 
    sedimentary rock 
    shale 
    siltstone 
    slate 
    tonalite 
    ultramafic intrusive rock 
    ME_geol.aat
    Arc attribute table for Maine geologic coverage. (Source: ESRI)
    arc-code
    Unique identifier for the line feature

    type: integer width: 3 output width: 3 (Source: AAT data dictionary)
    ValueDefinition
    1contact, location certain
    7shoreline or riverbank
    10thrust fault, location certain, teeth on right from origin (angle of thrusting added to ARC-PARA1 where designated in source)
    30fault, sense of displacement unknown or undefined, location certain
    32fault, sense of displacement unknown or undefined, location inferred or queried
    99bounding line (neatline) of coverage
    124state boundary
    arc-para1
    Used for "decorated" lines where additional information is needed.

    type: integer width: 3 output width: 3 (Source: AAT data dictionary)
    ValueDefinition
    0no additional information
    arc-para2
    "Scratch" field used mostly in Alaska.

    type: integer width: 3 output width: 3 (Source: AAT data dictionary)
    ValueDefinition
    0no additional information
    1listric fault
    2high angle, normal or reverse
    3seward boundary
    source
    An alphanumeric code (e.g. US001) that designates the source material used.

    type: character width: 6 output width: 8 (Source: Doug Stoeser (USGS))
    ValueDefinition
    ME001Digital bedrock data downloaded from  Maine Office of GIS in September 2005 from http://apollo.ogis.state.me.us/catalog/catalog.asp?state=2&extent=cover#bedrock   Bedrock units table (publication date 11/15/2002) downloaded from same site. Permission to redistribute these data granted by Dr. Robert Marvinney, State Geologist of Maine, in September 2006.
    ME201C.L. Dicken flipped arcs.
    ME202C.L. Dicken corrected mistagged arcs.
    ME203C.L. Dicken flipped arcs and corrected mistagged arcs.
    US001Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationNENJ.pdf)
    Entity_and_Attribute_Overview:
    Coding for polygon attributes:

    NAME: FEATURE: orig_label unmodified map unit symbols from source cover sgmc_label orig_label modified for standard geologic age symbols and an integer code added for province unit_link sgmc_label and a state code identifier source reference to source of data unit_age geologic age rocktype1 predominant lithology rocktype2 second most predominant lithology

    Coding for arc attributes:

    NAME: FEATURE: arc-code unique integer identifier arc-para1 used where additional information is needed arc-para2 scratch field source reference to source of data

    Coding for point attributes:

    NAME: FEATURE: point_feature name of feature on map source reference to source of data

    Coding for dikes (special arcs) attributes:

    NAME: FEATURE: orig_label unmodified map unit symbols from source cover sgmc_label orig_label modified for standard geologic age symbols and an integer code added for province arc-code unique integer identifier dike_lith general lithology dike_age geologic age source reference to source of data

    Entity_and_Attribute_Detail_Citation: ESRI

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
  2. Who also contributed to the data set?
    State Geologic Map Compilation (SGMC) activity of the National Surveys and Analysis projects of the US Geological Survey Mineral Resources Program.

  3. To whom should users address questions about the data?
    Suzanne W. Nicholson
    U.S. Geological Survey
    12201 Sunrise Valley Dr. MS954
    Reston, VA
    USA

    703-648-6344 (voice)
    swnich@usgs.gov

Why was the data set created?

A primary goal of this work is to develop geologic map datasets with standardized structure and attribution. The database design and standards are documented in CONUSdocumentationNENJ.pdf of this series. The intent is that contiguous databases can be merged seamlessly and without any additional effort. In addition to a common database structure, the conterminous U.S. state databases (the contiguous 48 states) have been fitted to a set of standard state boundaries so that, when states are merged, they match without slivers or overlap. No attempt has been made to reconcile differences in mapping across state boundaries.

How was the data set created?

  1. From what previous works were the data drawn?
    megeol (source 1 of 3)
    Maine Geological Survey (MGS), 19950101, bedrock: Maine Office of Geographic Information Systems, Augusta, Maine.

    Online Links:

    Type_of_Source_Media: vector
    Source_Scale_Denominator: 500,000
    Source_Contribution: provided geology for state map
    state boundaries (source 2 of 3)
    Johnson, Bruce R., unpublished, 1:100,000 Scale State Boundaries of the Conterminous United States.

    Other_Citation_Details:
    Arc/INFO coverage developed by Bruce Johnson. Derived from USGS 100,000-scale DLG boundary layer quadrangles.
    Type_of_Source_Media: online
    Source_Scale_Denominator: 100,000
    Source_Contribution: provided linework of the conterminous state boundaries
    lithclass (source 3 of 3)
    Johnson, Bruce R., unpublished, Geologic Map Unit Classification, ver. 6.1.

    Other_Citation_Details:
    Document has been modified and is included in Appedices of the publication.
    Type_of_Source_Media: online; http:/geology.usgs.gov/dm
    Source_Scale_Denominator: none
    Source_Contribution:
    Source of lithologic codes and specific rock names found in ROCKTYPE1 and ROCKTYPE2.
  2. How were the data generated, processed, and modified?
    Date: 2003 (process 1 of 10)
    The purpose of this standardization is to allow all SGMC covers to be seamlessly joined without any additional effort to form regional or national level digital maps. Note that for Alaska, the state is being compiled as blocks of 1:250k quadrangles that will ultimately be used to compile a new state map. Douglas Stoeser (USGS) and Ric Wilson (USGS) are co-coordinators for the overall SGMC effort, with Stoeser coordinating work on the mainland states and Wilson coordinating work for Alaska and Hawaii.
    Date: 2006 (process 2 of 10)
    C.L. Dicken obtained the digital geologic map of Maine from the Maine GIS Data Catalog (http://apollo.ogis.state.me.us/catalog/).

    First step was to convert from a shapefile to a coverage. This was done in Arc/Info by using the shapearc command. Then the labels had to be attached to the polygons so the GET function was used in Arc/Info.

    The coverage was re-projected into the following:

    projection: Lambert Conformal Conic units: meters datum: NAD27 standard parallel 1: 33 0 0.000 standard parallel 2: 45 0 0.000 central meridian: -100 0 0.000 reference latitude: 0 0 0.000 false easting: 0.00000 false northing: 0.00000

    (Note: Attributes associated with the generation of the coverages were not deleted. PAT - shape, area, perimeter, coverage#, and coverage-id AAT - shape, fnode#, tnode#, lnode#, rnode#, length, coverage#, and coverage-id)

    All attributes were deleted except unit. The values from unit where then calculated into a new field called orig_label.
    Date: 2006 (process 3 of 10)
    The relevant state outline (arcs) was removed from the coverage and replaced with the arcs from the 1:100,000 Scale State Boundaries of the Conterminous United States.

    This allows for a seamless fit of each state to a standard state boundary base.
    Date: 2005 (process 4 of 10)
    The following attributes were exported from Filemaker as a .dbf: orig_label, map_symbol2, unit_link, reference_id, unit_age, rocktype1, and rocktype2.

    orig_label reflects the original map symbol used on the source map

    map_symbol2 reflects map-symbol1 with the addition of a province number

    unit_link is an auto generated field based on map-symbol2 and the state abbreviation (e.g. ME001) that produces a unique identifier for each map unit

    reference_id was populated with an alphanumeric code (e.g. US001) that designates the source used for the linework and other references used to describe the age or lithologies of the unit.

    unit_age was populated with general age assignment

    rocktype1 records dominant lithology (does not imply minimum percentage of abundance), using standardized data dictionary

    rocktype2 records second most dominant lithology, using standardized data dictionary

    The attributes were then converted using the following structure:

    item name: orig_label width: 12 output: 12 type: c

    item name: sgmc_label width: 16 output: 16 type: c

    item name: unit_link width: 18 output: 18 type: c

    item name: source width: 6 output: 8 type: c

    item name: unit_age width: 60 output: 60 type: c

    item name: rocktype1 width: 40 output: 40 type: c

    item name: rocktype2 width: 40 output: 40 type: c
    Date: 2006 (process 5 of 10)
    Once the .dbf was in the correct format with standardized column widths and data structure, it was converted into a lookup table (.lut) in Arc/Info. Then a joinitem was performed to join the look-up table to the polygon attribute table. orig_label was used as the merge item.
    Date: 2006 (process 6 of 10)
    Next, in preparing the uniform .aat file, the following items were added to the table:

    item name: arc-code width: 3 output: 3 type: i

    item name: arc-para1 width: 3 output: 3 type: i

    item name: arc-para2 width: 3 output: 3 type: i

    item name: source width: 6 output: 8 type: c

    Date: 2006 (process 7 of 10)
    Arc-code was populated using the paper map source to tag the lines using the AAT line type data dictionary (see CONUSdocumentationNENJ.pdf in this series).

    Arc-para1 was populated when additional information was available such as identifying the upthrown side of a fault or direction of thrusting on a fault. (see CONUSdocumentationNENJ.pdf)

    Arc-para2 is a scratch field that is used mostly in Alaska.

    Source was populated with an alphanumeric code (e.g. US001) that designates the source used for the linework.

    Date: 2006 (process 8 of 10)
    Once the .aat and the .pat were populated with the correct attributes, the coverage was exported as an .e00 file (MEgeol_lcc.e00).

    Then it was unprojected into geographic coordinates and exported again (MEgeol_dd.e00).
    Date: 2006 (process 9 of 10)
    Faults were extracted from the coverage and created a separate fault coverage (MEfaults_lcc) and then exported (MEfaults_lcc.e00).
    Date: 2006 (process 10 of 10)
    Finally, the geology lines, geology polygons and faults were converted into shapefiles; in both geographic coordinates and in Lambert Conformal Conic projection.
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    The values of the attributes ROCKTYPE1 and ROCKTYPE2 were assigned based on the information in the legends of the source maps (most of which are paper). The definitions of these values are described in the draft document Geologic Map Classification version 6.1 (Johnson and others); available at the following website: http://geology.usgs.gov/dm
  2. How accurate are the geographic locations?
    Accuracy of Maine state boundary and those arcs intersecting it: The accuracy of the state boundary arcs is based on the 1:100,000 scale original data used to produce this boundary. (Johnson, Bruce R. and Leveritch, Beth, 1998, 1:100,000 Scale State Boundaries of the Conterminous United States: U.S. Geological Survey, unpublished (see metadata file: st100kmeta.txt, CONUSdocumentationNENJ.pdf))

    Those internal arcs intersecting the state boundary were extended or shortened as needed to complete polygons, possibly creating a small amount of error.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Bodies of water are classified as water, and the geologic units underlying them are not included in this coverage.
  5. How consistent are the relationships among the observations, including topology?
    All internal polygons were checked for closure with vendor software and on hard copy plots. Overshoots and undershoots have been deleted or corrected as appropriate.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_Constraints:
This database is not meant to be used or displayed at any scale other than 1:500,000.

Any hardcopies utilizing these data sets shall clearly indicate their source. If the licensee has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. Licensee specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the U.S. Geological Survey.

  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey Information Services Reston-ESIC
    U.S. Geological Survey
    507 National Center
    Reston, Virginia
    USA

    1-888-ASK-USGS or 1-703-648-5953 (voice)
    http://www.usgs.gov/contact/
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the USGS. Although these data have been used by the USGS and have been successfully imported into data base programs, no warranty, expressed or implied, is made by the USGS as to how successfully or accurately the data can be imported into any specific application software running on any specific hardware platform. The fact of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith. This data base GIS is not meant to be used or displayed at any scale other than 1:500,000.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 19-Jan-2006
Metadata author:
U.S. Geological Survey
Attn: Connie L. Dicken
12201 Sunrise Valley Dr. MS954
Reston, VA
USA

703-648-6482 (voice)
cdicken@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://mrdata.usgs.gov/geology/state/metadata/me.faq.html>

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