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

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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 New Hampshire, one state in the national compilation of state geologic map databases. The digital geologic state map data of New Hampshire was prepared by the University of New Hampshire and updated in 2006 by the NHGS in cooperation with the USGS. 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: -72.557731
    East_Bounding_Coordinate: -70.542870
    North_Bounding_Coordinate: 45.305375
    South_Bounding_Coordinate: 42.697092
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2006
    Currentness_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?
    NHgeol.pat
    Polygon attribute table for the New Hampshire 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
    -ChHurricane Mountain Formation
    -CjbJim Pond Formation
    D1bPink equigranular biotite granite
    D1mTwo-mica granite of northern and southeastern New Hampshire
    D2bPorphyritic biotite granodiorite
    D3AbBiotite tonalite
    D3BbBiotite trondhjemite in Rumney quadrangle
    D6Biotite quartz diorite in northeastern New Hampshire
    Db2bBethlehem Granodiorite
    Dc1mConcord Granite
    Dc3AmTwo-mica tonalite
    De9Exeter Diorite
    DgGile Mountain Formation, undivided
    DgcGile Mountain Formation, Interbedded gray slate or phyllite and brown-weathering calcite-ankerite metasiltstone
    DgmGile Mountain Formation, Meetinghouse Slate Member
    DgvGile Mountain Formation, Mafic metavolcanic member
    DiIronbound Mountain Formation, undivided
    DibIronbound Mountain Formation, Basaltic to andesitic member
    DieIronbound Mountain Formation, Euxinic metashale member
    DifIronbound Mountain Formation, Felsic volcanic member
    DihIronbound Mountain Formation, Grits at Halls Stream in northern New Hampshire
    DirIronbound Mountain Formation, Metarhyolite and microgranite intrusions
    Dk2xKinsman Granodiorite
    DlLittleton Formation, undivided
    DlcLittleton Formation, Calc-silicate rock
    DlcsLittleton Formation, Metaconglomerate and quartzite
    DllLittleton Formation, Lower unnamed member
    DluLittleton Formation, Upper unnamed member
    DlvLittleton Formation, Volcanic lentils
    DlvbLittleton Formation, Metabasaltic greenstone or amphibolite
    DlvsLittleton Formation, Epiclastic metavolcanic sediments
    Ds1-6Spaulding Tonalite
    Ds6-9BHypersthene-biotite quartz diorite and hornblende or actinolite diorite or gabbro
    DS9Metamorphosed gabbro, diorite, and intrusive basalt dikes
    DSlrMigmatitic rocks
    Dw3AWinnipesaukee Tonalite
    J1-4lLeucocratic granite to quartz syenite
    J1aFine-grained granite
    J1hHastingsite granite
    J1hxGranite porphyry
    J1ONepheline-sodalite-hastingsite syenite
    J1rMesoperthitic granite
    J1xPorphyritic granite
    J4hHornblende or alkalic amphibole quartz syenite
    J4hxPorphyritic hornblende or alkalic amphibole quartz syenite.
    J4xQuartz syenite
    J5Hornblende-biotite quartz monzodiorite
    J7hHornblende (or alkalic amphibole) syenite
    J7xPorphyritic syenite
    J8Augite monzodiorite
    J9ADiorite
    J9AhPorphyritic hornblende diorite
    J9BGabbro
    Jc1bConway Granite
    JmvMoat Volcanics
    Jo1bMount Osceola Granite, Green biotite mesoperthitic granite
    Jo1hMount Osceola Granite, Granite containing hornblende and, locally, hastingsite, ferrohedenbergite, or fayalite
    K1aRhyolite and fine-grained granite
    K1bxPorphyritic biotite granite
    K1rMedium-grained mesoperthitic granite containing riebeckite and (or) hastingsite
    K2Biotite-hornblende granodiorite
    K4xLarge mesoperthitic phenocrysts in a pink to gray quartz syenite porphyry of "Albany type"
    K7CGray augite-hornblende-biotite monzonite
    K9AHornblende diorite
    K9ABAugite-hornblende diorite and gabbro
    K9BAugite-hornblende-biotite gabbro
    Kc1bMesoperthitic biotite granite
    KvBasalt
    MD1mTwo-mica granite
    MD3BTrondhjemite and abundant pegmatite
    O-CdDead River Formation, undivided
    O-CdpDead River Formation, Graded-bedded metapelite
    O-CzlAziscohos Formation, Lower unnamed member
    O-CzuAziscohos Formation, Upper unnamed member
    OalMetavolcanic and metasedimentary rocks of the lower part of Ammonoosuc Volcanics, undivided
    OalbAmmonoosuc Volcanics, Metabasalt
    OalfAmmonoosuc Volcanics, Felsic metavolcanic rocks
    OalgAmmonoosuc Volcanics, Volcaniclastic metagraywackes
    OaliAmmonoosuc Volcanics, White quartz-kyanite rock and silicate iron-formation
    OalsAmmonoosuc Volcanics, Metasedimentary rocks
    OalxAmmonoosuc Volcanics, Bimodal volcanic rocks
    OausAmmonoosuc Volcanics, Metasedimentary rocks
    OauxAmmonoosuc Volcanics, Bimodal volcanic rocks
    Oc1bBiotite granite
    Oc3AhHornblende-biotite tonalite
    Oc3AxPorphyritic phase of hornblende-biotite tonalite
    Oc9BGabbro and diabase
    Oh1-2hHornblende granite to granodiorite
    Oh2-9ATonalite, diorite, granodiorite, and granite
    Oh2hHornblende granodiorite of Highlandcroft pluton
    Oj3ATonalite
    Oo1-3AGranite, granodiorite, and tonalite
    Oo1-3BGranite, granodiorite, and trondhjemite
    Oo1bBiotite granite
    Oo1bxPorphyritic (alkalic feldspar) biotite granite
    Oo1hHornblende-biotite granite
    Oo2-3AGranodiorite to tonalite
    Oo2bBiotite granodiorite
    Oo2bxPorphyritic biotite granodiorite in northern Jefferson dome in Milan quadrangle
    Oo2hHornblende granodiorite
    Oo3BTrondhjemite
    Oo3B-6Trondhjemite and quartz diorite in northern Jefferson dome in Gorham quadrangle
    Oo4-7hHornblende-biotite quartz syenite to syenite
    Oo4bxPorphyritic biotite quartz syenite in central Jefferson dome in Mt. Washington quadrangle
    Oo4ChHornblende quartz monzonite
    Oo9BHornblende gabbro
    OpPartridge Formation, undivided
    OpvPartridge Formation, Interstratified metavolcanic rocks
    OpviPartridge Formation, White quartz-kyanite rock
    OqQuimby Formation
    OZrbRye Complex, Breakfast Hill Granite of Novotny (1964).
    OZrzRye Complex
    P1mGray biotite granite
    PM1mTwo-mica granite of the Sebago batholith and Effingham pluton of eastern New Hampshire
    S1bBiotite granite stock and dikes
    Sa2xAyer Granodiorite
    ScClough Quartzite
    SfFitch Formation (Upper Silurian; Pridolian and Ludlovian)
    SfcFitch and Clough Formations, undivided
    SfrFrontenac Formation, undivided
    SfrbFrontenac Formation, Metabasalt interbeds
    SfrcFrontenac Formation, Massive tan- or brown-weathering calcite-ankerite-muscovite granofels and interbedded gray metapelite
    SfrgFrontenac Formation, Graded-bedded metagraywacke and subordinate gray phyllite
    SfrvFrontenac Formation, Mixed volcanic and sedimentary facies
    SfrxFrontenac Formation, Proximal bimodal volcanic facies
    SgGreenvale Cove Formation
    SmMadrid Formation
    SmsfMadrid and Smalls Falls Formations, undivided
    Sn1xNewburyport Complex
    Sn2-3ANewburyport Complex
    SObMerrimack Group, Berwick Formation
    SObcMerrimack Group, Berwick Formation, Unnamed member
    SObgMerrimack Group, Berwick Formation, Gove Member
    SOeMerrimack Group, Eliot Formation
    SOecMerrimack Group, Eliot Formation, Calef Member
    SOkMerrimack Group, Kittery Formation
    SpPerry Mountain Formation, undivided
    SprPerry Mountain and Rangeley Formations, undivided
    SpvsPerry Mountain Formation, Sedimentary and subordinate distal felsic and mafic volcanic facies in Piermont allochthon
    SpvxPerry Mountain Formation, Volcanic facies in Piermont allochthon
    SrRangeley Formation, undivided
    SrcMember C (uppermost) of the Rangeley Formation in Maine and northeastern and southwestern New Hampshire
    SrlLower part of Rangeley Formation
    SrlpRangeley Formation, Ribbon-banded calc-silicate of eastern New Hampshire
    SruUpper part of Rangeley Formation
    SrupRangeley Formation, Pink to green calc-silicate and purple biotite granofels
    SrvfRangeley Formation, Felsic metavolcanic rocks
    SsfSmalls Falls Formation, undivided
    SsfbSmalls Falls Formation, Metabasalt member
    SsfcSmalls Falls Formation, Metaconglomerate member
    SsffSmalls Falls Formation, Felsic metavolcanic member
    SsfxSmalls Falls Formation, Mixed metavolcanic rocks and metavolcanic sediments
    waterWater
    ZmzMassabesic Gneiss Complex
    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
    CAh;0Hurricane Mountain Formation
    CAjb;0Jim Pond Formation
    D1b;0Pink equigranular biotite granite
    D1m;0Two-mica granite of northern and southeastern New Hampshire
    D2b;0Porphyritic biotite granodiorite
    D3Ab;0Biotite tonalite
    D3Bb;0Biotite trondhjemite in Rumney quadrangle
    D6;0Biotite quartz diorite in northeastern New Hampshire
    Db2b;0Bethlehem Granodiorite
    Dc1m;0Concord Granite
    Dc3Am;0Two-mica tonalite
    De9;0Exeter Diorite
    Dg;0Gile Mountain Formation, undivided
    Dgc;0Gile Mountain Formation, Interbedded gray slate or phyllite and brown-weathering calcite-ankerite metasiltstone
    Dgm;0Gile Mountain Formation, Meetinghouse Slate Member
    Dgv;0Gile Mountain Formation, Mafic metavolcanic member
    Di;0Ironbound Mountain Formation, undivided
    Dib;0Ironbound Mountain Formation, Basaltic to andesitic member
    Die;0Ironbound Mountain Formation, Euxinic metashale member
    Dif;0Ironbound Mountain Formation, Felsic volcanic member
    Dih;0Ironbound Mountain Formation, Grits at Halls Stream in northern New Hampshire
    Dir;0Ironbound Mountain Formation, Metarhyolite and microgranite intrusions
    Dk2x;0Kinsman Granodiorite
    Dl;0Littleton Formation, undivided
    Dlc;0Littleton Formation, Calc-silicate rock
    Dlcs;0Littleton Formation, Metaconglomerate and quartzite
    Dll;0Littleton Formation, Lower unnamed member
    Dlu;0Littleton Formation, Upper unnamed member
    Dlv;0Littleton Formation, Volcanic lentils
    Dlvb;0Littleton Formation, Metabasaltic greenstone or amphibolite
    Dlvs;0Littleton Formation, Epiclastic metavolcanic sediments
    Ds1-6;0Spaulding Tonalite
    Ds6-9B;0Hypersthene-biotite quartz diorite and hornblende or actinolite diorite or gabbro
    DS9;0Metamorphosed gabbro, diorite, and intrusive basalt dikes
    DSlr;0Migmatitic rocks
    Dw3A;0Winnipesaukee Tonalite
    J1-4l;0Leucocratic granite to quartz syenite
    J1a;0Fine-grained granite
    J1h;0Hastingsite granite
    J1hx;0Granite porphyry
    J1O;0Nepheline-sodalite-hastingsite syenite
    J1r;0Mesoperthitic granite
    J1x;0Porphyritic granite
    J4h;0Hornblende or alkalic amphibole quartz syenite
    J4hx;0Porphyritic hornblende or alkalic amphibole quartz syenite.
    J4x;0Quartz syenite
    J5;0Hornblende-biotite quartz monzodiorite
    J7h;0Hornblende (or alkalic amphibole) syenite
    J7x;0Porphyritic syenite
    J8;0Augite monzodiorite
    J9A;0Diorite
    J9Ah;0Porphyritic hornblende diorite
    J9B;0Gabbro
    Jc1b;0Conway Granite
    Jmv;0Moat Volcanics
    Jo1b;0Mount Osceola Granite, Green biotite mesoperthitic granite
    Jo1h;0Mount Osceola Granite, Granite containing hornblende and, locally, hastingsite, ferrohedenbergite, or fayalite
    K1a;0Rhyolite and fine-grained granite
    K1bx;0Porphyritic biotite granite
    K1r;0Medium-grained mesoperthitic granite containing riebeckite and (or) hastingsite
    K2;0Biotite-hornblende granodiorite
    K4x;0Large mesoperthitic phenocrysts in a pink to gray quartz syenite porphyry of "Albany type"
    K7C;0Gray augite-hornblende-biotite monzonite
    K9A;0Hornblende diorite
    K9AB;0Augite-hornblende diorite and gabbro
    K9B;0Augite-hornblende-biotite gabbro
    Kc1b;0Mesoperthitic biotite granite
    Kv;0Basalt
    MD1m;0Two-mica granite
    MD3B;0Trondhjemite and abundant pegmatite
    Oal;0Metavolcanic and metasedimentary rocks of the lower part of Ammonoosuc Volcanics, undivided
    Oalb;0Ammonoosuc Volcanics, Metabasalt
    Oalf;0Ammonoosuc Volcanics, Felsic metavolcanic rocks
    Oalg;0Ammonoosuc Volcanics, Volcaniclastic metagraywackes
    Oali;0Ammonoosuc Volcanics, White quartz-kyanite rock and silicate iron-formation
    Oals;0Ammonoosuc Volcanics, Metasedimentary rocks
    Oalx;0Ammonoosuc Volcanics, Bimodal volcanic rocks
    Oaus;0Ammonoosuc Volcanics, Metasedimentary rocks
    Oaux;0Ammonoosuc Volcanics, Bimodal volcanic rocks
    Oc1b;0Biotite granite
    Oc3Ah;0Hornblende-biotite tonalite
    Oc3Ax;0Porphyritic phase of hornblende-biotite tonalite
    Oc9B;0Gabbro and diabase
    OCAd;0Dead River Formation, undivided
    OCAdp;0Dead River Formation, Graded-bedded metapelite
    OCAzl;0Aziscohos Formation, Lower unnamed member
    OCAzu;0Aziscohos Formation, Upper unnamed member
    Oh1-2h;0Hornblende granite to granodiorite
    Oh2-9A;0Tonalite, diorite, granodiorite, and granite
    Oh2h;0Hornblende granodiorite of Highlandcroft pluton
    Oj3A;0Tonalite
    Oo1-3A;0Granite, granodiorite, and tonalite
    Oo1-3B;0Granite, granodiorite, and trondhjemite
    Oo1b;0Biotite granite
    Oo1bx;0Porphyritic (alkalic feldspar) biotite granite
    Oo1h;0Hornblende-biotite granite
    Oo2-3A;0Granodiorite to tonalite
    Oo2b;0Biotite granodiorite
    Oo2bx;0Porphyritic biotite granodiorite in northern Jefferson dome in Milan quadrangle
    Oo2h;0Hornblende granodiorite
    Oo3B;0Trondhjemite
    Oo3B-6;0Trondhjemite and quartz diorite in northern Jefferson dome in Gorham quadrangle
    Oo4-7h;0Hornblende-biotite quartz syenite to syenite
    Oo4bx;0Porphyritic biotite quartz syenite in central Jefferson dome in Mt. Washington quadrangle
    Oo4Ch;0Hornblende quartz monzonite
    Oo9B;0Hornblende gabbro
    Op;0Partridge Formation, undivided
    Opv;0Partridge Formation, Interstratified metavolcanic rocks
    Opvi;0Partridge Formation, White quartz-kyanite rock
    Oq;0Quimby Formation
    OZrb;1Rye Complex, Breakfast Hill Granite of Novotny (1964).
    OZrz;0Rye Complex
    OZrz;1Rye Complex
    P1m;0Gray biotite granite
    PAM1m;0Two-mica granite of the Sebago batholith and Effingham pluton of eastern New Hampshire
    S1b;0Biotite granite stock and dikes
    Sa2x;0Ayer Granodiorite
    Sc;0Clough Quartzite
    Sf;0Fitch Formation (Upper Silurian; Pridolian and Ludlovian)
    Sfc;0Fitch and Clough Formations, undivided
    Sfr;0Frontenac Formation, undivided
    Sfrb;0Frontenac Formation, Metabasalt interbeds
    Sfrc;0Frontenac Formation, Massive tan- or brown-weathering calcite-ankerite-muscovite granofels and interbedded gray metapelite
    Sfrg;0Frontenac Formation, Graded-bedded metagraywacke and subordinate gray phyllite
    Sfrv;0Frontenac Formation, Mixed volcanic and sedimentary facies
    Sfrx;0Frontenac Formation, Proximal bimodal volcanic facies
    Sg;0Greenvale Cove Formation
    Sm;0Madrid Formation
    Smsf;0Madrid and Smalls Falls Formations, undivided
    Sn1x;0Newburyport Complex
    Sn2-3A;0Newburyport Complex
    SOb;1Merrimack Group, Berwick Formation
    SObc;1Merrimack Group, Berwick Formation, Unnamed member
    SObg;1Merrimack Group, Berwick Formation, Gove Member
    SOe;1Merrimack Group, Eliot Formation
    SOec;1Merrimack Group, Eliot Formation, Calef Member
    SOk;1Merrimack Group, Kittery Formation
    Sp;0Perry Mountain Formation, undivided
    Spr;0Perry Mountain and Rangeley Formations, undivided
    Spvs;0Perry Mountain Formation, Sedimentary and subordinate distal felsic and mafic volcanic facies in Piermont allochthon
    Spvx;0Perry Mountain Formation, Volcanic facies in Piermont allochthon
    Sr;0Rangeley Formation, undivided
    Src;0Member C (uppermost) of the Rangeley Formation in Maine and northeastern and southwestern New Hampshire
    Srl;0Lower part of Rangeley Formation
    Srlp;0Rangeley Formation, Ribbon-banded calc-silicate of eastern New Hampshire
    Sru;0Upper part of Rangeley Formation
    Srup;0Rangeley Formation, Pink to green calc-silicate and purple biotite granofels
    Srvf;0Rangeley Formation, Felsic metavolcanic rocks
    Ssf;0Smalls Falls Formation, undivided
    Ssfb;0Smalls Falls Formation, Metabasalt member
    Ssfc;0Smalls Falls Formation, Metaconglomerate member
    Ssff;0Smalls Falls Formation, Felsic metavolcanic member
    Ssfx;0Smalls Falls Formation, Mixed metavolcanic rocks and metavolcanic sediments
    water;0Water
    Zmz;0Massabesic Gneiss Complex Enumerated_Domain:
    Zmz;1Massabesic Gneiss Complex Attribute:
    NHCAh;0Hurricane Mountain Formation
    NHCAjb;0Jim Pond Formation
    NHD1b;0Pink equigranular biotite granite
    NHD1m;0Two-mica granite of northern and southeastern New Hampshire
    NHD2b;0Porphyritic biotite granodiorite
    NHD3Ab;0Biotite tonalite
    NHD3Bb;0Biotite trondhjemite in Rumney quadrangle
    NHD6;0Biotite quartz diorite in northeastern New Hampshire
    NHDb2b;0Bethlehem Granodiorite
    NHDc1m;0Concord Granite
    NHDc3Am;0Two-mica tonalite
    NHDe9;0Exeter Diorite
    NHDg;0Gile Mountain Formation, undivided
    NHDgc;0Gile Mountain Formation, Interbedded gray slate or phyllite and brown-weathering calcite-ankerite metasiltstone
    NHDgm;0Gile Mountain Formation, Meetinghouse Slate Member
    NHDgv;0Gile Mountain Formation, Mafic metavolcanic member
    NHDi;0Ironbound Mountain Formation, undivided
    NHDib;0Ironbound Mountain Formation, Basaltic to andesitic member
    NHDie;0Ironbound Mountain Formation, Euxinic metashale member
    NHDif;0Ironbound Mountain Formation, Felsic volcanic member
    NHDih;0Ironbound Mountain Formation, Grits at Halls Stream in northern New Hampshire
    NHDir;0Ironbound Mountain Formation, Metarhyolite and microgranite intrusions
    NHDk2x;0Kinsman Granodiorite
    NHDl;0Littleton Formation, undivided
    NHDlc;0Littleton Formation, Calc-silicate rock
    NHDlcs;0Littleton Formation, Metaconglomerate and quartzite
    NHDll;0Littleton Formation, Lower unnamed member
    NHDlu;0Littleton Formation, Upper unnamed member
    NHDlv;0Littleton Formation, Volcanic lentils
    NHDlvb;0Littleton Formation, Metabasaltic greenstone or amphibolite
    NHDlvs;0Littleton Formation, Epiclastic metavolcanic sediments
    NHDs1-6;0Spaulding Tonalite
    NHDs6-9B;0Hypersthene-biotite quartz diorite and hornblende or actinolite diorite or gabbro
    NHDS9;0Metamorphosed gabbro, diorite, and intrusive basalt dikes
    NHDSlr;0Migmatitic rocks
    NHDw3A;0Winnipesaukee Tonalite
    NHJ1-4l;0Leucocratic granite to quartz syenite
    NHJ1a;0Fine-grained granite
    NHJ1h;0Hastingsite granite
    NHJ1hx;0Granite porphyry
    NHJ1O;0Nepheline-sodalite-hastingsite syenite
    NHJ1r;0Mesoperthitic granite
    NHJ1x;0Porphyritic granite
    NHJ4h;0Hornblende or alkalic amphibole quartz syenite
    NHJ4hx;0Porphyritic hornblende or alkalic amphibole quartz syenite.
    NHJ4x;0Quartz syenite
    NHJ5;0Hornblende-biotite quartz monzodiorite
    NHJ7h;0Hornblende (or alkalic amphibole) syenite
    NHJ7x;0Porphyritic syenite
    NHJ8;0Augite monzodiorite
    NHJ9A;0Diorite
    NHJ9Ah;0Porphyritic hornblende diorite
    NHJ9B;0Gabbro
    NHJc1b;0Conway Granite
    NHJmv;0Moat Volcanics
    NHJo1b;0Mount Osceola Granite, Green biotite mesoperthitic granite
    NHJo1h;0Mount Osceola Granite, Granite containing hornblende and, locally, hastingsite, ferrohedenbergite, or fayalite
    NHK1a;0Rhyolite and fine-grained granite
    NHK1bx;0Porphyritic biotite granite
    NHK1r;0Medium-grained mesoperthitic granite containing riebeckite and (or) hastingsite
    NHK2;0Biotite-hornblende granodiorite
    NHK4x;0Large mesoperthitic phenocrysts in a pink to gray quartz syenite porphyry of "Albany type"
    NHK7C;0Gray augite-hornblende-biotite monzonite
    NHK9A;0Hornblende diorite
    NHK9AB;0Augite-hornblende diorite and gabbro
    NHK9B;0Augite-hornblende-biotite gabbro
    NHKc1b;0Mesoperthitic biotite granite
    NHKv;0Basalt
    NHMD1m;0Two-mica granite
    NHMD3B;0Trondhjemite and abundant pegmatite
    NHOal;0Metavolcanic and metasedimentary rocks of the lower part of Ammonoosuc Volcanics, undivided
    NHOalb;0Ammonoosuc Volcanics, Metabasalt
    NHOalf;0Ammonoosuc Volcanics, Felsic metavolcanic rocks
    NHOalg;0Ammonoosuc Volcanics, Volcaniclastic metagraywackes
    NHOali;0Ammonoosuc Volcanics, White quartz-kyanite rock and silicate iron-formation
    NHOals;0Ammonoosuc Volcanics, Metasedimentary rocks
    NHOalx;0Ammonoosuc Volcanics, Bimodal volcanic rocks
    NHOaus;0Ammonoosuc Volcanics, Metasedimentary rocks
    NHOaux;0Ammonoosuc Volcanics, Bimodal volcanic rocks
    NHOc1b;0Biotite granite
    NHOc3Ah;0Hornblende-biotite tonalite
    NHOc3Ax;0Porphyritic phase of hornblende-biotite tonalite
    NHOc9B;0Gabbro and diabase
    NHOCAd;0Dead River Formation, undivided
    NHOCAdp;0Dead River Formation, Graded-bedded metapelite
    NHOCAzl;0Aziscohos Formation, Lower unnamed member
    NHOCAzu;0Aziscohos Formation, Upper unnamed member
    NHOh1-2h;0Hornblende granite to granodiorite
    NHOh2-9A;0Tonalite, diorite, granodiorite, and granite
    NHOh2h;0Hornblende granodiorite of Highlandcroft pluton
    NHOj3A;0Tonalite
    NHOo1-3A;0Granite, granodiorite, and tonalite
    NHOo1-3B;0Granite, granodiorite, and trondhjemite
    NHOo1b;0Biotite granite
    NHOo1bx;0Porphyritic (alkalic feldspar) biotite granite
    NHOo1h;0Hornblende-biotite granite
    NHOo2-3A;0Granodiorite to tonalite
    NHOo2b;0Biotite granodiorite
    NHOo2bx;0Porphyritic biotite granodiorite in northern Jefferson dome in Milan quadrangle
    NHOo2h;0Hornblende granodiorite
    NHOo3B;0Trondhjemite
    NHOo3B-6;0Trondhjemite and quartz diorite in northern Jefferson dome in Gorham quadrangle
    NHOo4-7h;0Hornblende-biotite quartz syenite to syenite
    NHOo4bx;0Porphyritic biotite quartz syenite in central Jefferson dome in Mt. Washington quadrangle
    NHOo4Ch;0Hornblende quartz monzonite
    NHOo9B;0Hornblende gabbro
    NHOp;0Partridge Formation, undivided
    NHOpv;0Partridge Formation, Interstratified metavolcanic rocks
    NHOpvi;0Partridge Formation, White quartz-kyanite rock
    NHOq;0Quimby Formation
    NHOZrb;1Rye Complex, Breakfast Hill Granite of Novotny (1964).
    NHOZrz;0Rye Complex
    NHOZrz;1Rye Complex
    NHP1m;0Gray biotite granite
    NHPAM1m;0Two-mica granite of the Sebago batholith and Effingham pluton of eastern New Hampshire
    NHS1b;0Biotite granite stock and dikes
    NHSa2x;0Ayer Granodiorite
    NHSc;0Clough Quartzite
    NHSf;0Fitch Formation (Upper Silurian; Pridolian and Ludlovian)
    NHSfc;0Fitch and Clough Formations, undivided
    NHSfr;0Frontenac Formation, undivided
    NHSfrb;0Frontenac Formation, Metabasalt interbeds
    NHSfrc;0Frontenac Formation, Massive tan- or brown-weathering calcite-ankerite-muscovite granofels and interbedded gray metapelite
    NHSfrg;0Frontenac Formation, Graded-bedded metagraywacke and subordinate gray phyllite
    NHSfrv;0Frontenac Formation, Mixed volcanic and sedimentary facies
    NHSfrx;0Frontenac Formation, Proximal bimodal volcanic facies
    NHSg;0Greenvale Cove Formation
    NHSm;0Madrid Formation
    NHSmsf;0Madrid and Smalls Falls Formations, undivided
    NHSn1x;0Newburyport Complex
    NHSn2-3A;0Newburyport Complex
    NHSOb;1Merrimack Group, Berwick Formation
    NHSObc;1Merrimack Group, Berwick Formation, Unnamed member
    NHSObg;1Merrimack Group, Berwick Formation, Gove Member
    NHSOe;1Merrimack Group, Eliot Formation
    NHSOec;1Merrimack Group, Eliot Formation, Calef Member
    NHSOk;1Merrimack Group, Kittery Formation
    NHSp;0Perry Mountain Formation, undivided
    NHSpr;0Perry Mountain and Rangeley Formations, undivided
    NHSpvs;0Perry Mountain Formation, Sedimentary and subordinate distal felsic and mafic volcanic facies in Piermont allochthon
    NHSpvx;0Perry Mountain Formation, Volcanic facies in Piermont allochthon
    NHSr;0Rangeley Formation, undivided
    NHSrc;0Member C (uppermost) of the Rangeley Formation in Maine and northeastern and southwestern New Hampshire
    NHSrl;0Lower part of Rangeley Formation
    NHSrlp;0Rangeley Formation, Ribbon-banded calc-silicate of eastern New Hampshire
    NHSru;0Upper part of Rangeley Formation
    NHSrup;0Rangeley Formation, Pink to green calc-silicate and purple biotite granofels
    NHSrvf;0Rangeley Formation, Felsic metavolcanic rocks
    NHSsf;0Smalls Falls Formation, undivided
    NHSsfb;0Smalls Falls Formation, Metabasalt member
    NHSsfc;0Smalls Falls Formation, Metaconglomerate member
    NHSsff;0Smalls Falls Formation, Felsic metavolcanic member
    NHSsfx;0Smalls Falls Formation, Mixed metavolcanic rocks and metavolcanic sediments
    NHwater;0Water
    NHZmz;0Massabesic Gneiss Complex Enumerated_Domain:
    NHZmz;1Massabesic Gneiss Complex Attribute:
    NH001New Hampshire Geological Survey and U.S. Geological Survey, 2006 (in progress), Bedrock Geologic Map of New Hampshire - A Digital Representation of the Lyons and others 1997 map and ancillary files, scale 1:250,000.
    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
    Cretaceous 
    Devonian - Mississippian 
    Devonian - Silurian 
    Devonian? Silurian? 
    Early Late Devonian 
    Early Late Silurian 
    Early Middle Jurassic 
    Early Cretaceous 
    Early Devonian 
    Early Devonian Late Devonian 
    Early Jurassic 
    early Late Silurian 
    Early Silurian 
    Jurassic 
    Late Devonian 
    Late Ordovician 
    Late Proterozoic 
    Late Silurian 
    Lower Devonian 
    Lower Devonian; Siegenian 
    Lower Silurian (Llandoverian) 
    Lower Silurian (upper Llandoverian) 
    Lower Silurian? 
    Lower? Middle? Silurian 
    Middle - Late? Jurassic 
    Middle - Upper Ordovician 
    Middle Jurassic? 
    Middle Ordovician 
    Mississippian - Pennsylvanian 
    Ordovician? Late Proterozoic? 
    Ordovician? Silurian? 
    Permian 
    Silurian 
    Silurian? 
    unknown 
    Upper Cambrian 
    Upper Cambrian? 
    Upper Cambrian? Lower Ordovician? 
    Upper Ordovician? 
    Upper Silurian (Pridolian and Ludlovian) 
    Upper Silurian? 
    Upper to Middle Silurian (Ludlovian and Wenlockian) 
    rocktype1
    The predominant lithology found in the formation.

    type: character width: 40 output width: 40 (Source: Johnson Lith Class 6.1a)
    ValueDefinition
    amphibolite 
    basalt 
    bimodal suite 
    calc-silicate rock 
    conglomerate 
    diorite 
    felsic metavolcanic rock 
    felsic volcanic rock 
    gabbro 
    granite 
    granitic gneiss 
    granodiorite 
    granofels 
    greenstone 
    ignimbrite 
    mafic metavolcanic rock 
    marble 
    meta-argillite 
    meta-basalt 
    meta-conglomerate 
    meta-rhyolite 
    metasedimentary rock 
    metavolcanic rock 
    mica schist 
    migmatite 
    monzodiorite 
    monzonite 
    pelitic schist 
    phyllite 
    quartz diorite 
    quartz monzodiorite 
    quartz monzonite 
    quartz syenite 
    quartzite 
    rhyolite 
    schist 
    slate 
    syenite 
    tonalite 
    trondhjemite 
    rocktype2
    The second most predominant lithology in the formation.

    type: character width: 40 output width: 40 (Source: Johnson Lith Class 6.1)
    ValueDefinition
    amphibolite 
    andesite 
    ash-flow tuff 
    calc-silicate schist 
    diabase 
    diorite 
    felsic metavolcanic rock 
    gabbro 
    granite 
    granodiorite 
    granofels 
    ignimbrite 
    iron formation 
    mafic metavolcanic rock 
    marble 
    meta-argillite 
    meta-conglomerate 
    metasedimentary rock 
    metavolcanic rock 
    pegmatite 
    phyllite 
    quartz diorite 
    quartz monzonite 
    quartz syenite 
    quartz-feldspar schist 
    quartzite 
    sandstone 
    schist 
    siltstone 
    slate 
    syenite 
    tonalite 
    NH_geol.aat
    Arc attribute table for New Hampshire 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
    4normal fault, location certain, digitized with upthrown side on the right (code of 1 added to ARC-PARA1 where U/D is designated in source)
    7shoreline or riverbank
    10thrust fault, location certain, teeth on right from origin (angle of thrusting added to ARC-PARA1 where designated in source)
    12thrust fault, location inferred, queried, 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
    35high-angle reverse fault, location certain, teeth on right from origin (angle of thrusting added to ARC-PARA1 where designated in source)
    50dike or sills, unspecified, drawn in heavy red line.
    87right lateral fault, location certain
    90left lateral fault, location certain
    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
    1 
    arc-para2
    "Scratch" field used mostly in Alaska.

    type: integer width: 3 output width: 3 (Source: AAT data dictionary)
    ValueDefinition
    0no additional information
    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
    NH001Bennett, D. S, , Wittkop, C.A., and Dicken, C.L., 2006 , Bedrock Geologic Map of New Hampshire - A Digital Representation of the Lyons and others 1997 map and ancillary files: U.S. Geological Survey Data Series 215, scale 1:250,000, CD-ROM.
    NH101C.L. Dicken added arcs.
    NH102C.L. Dicken flipped arcs.
    NH103C.L. Dicken 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)
    NH_dike.aat
    Dike arc attribute table for New Hampshire coverage. (Source: ESRI)
    orig_label
    Unmodified map unit symbol from source cover

    type: character width: 12 output width: 12 (Source: AAT data dictionary)
    ValueDefinition
    unknownunknown dikes
    sgmc_label
    orig_label + ;n where n= province number (n=0 if no province number) type: character width: 16 output width: 16 (Source: AAT data dictionary)
    ValueDefinition
    unknownunknown
    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
    unknownunknown dikes
    arc-code
    Unique identifier for the line feature

    type: integer width: 3 output width: 3 (Source: AAT data dictionary)
    ValueDefinition
    50dike or sill, unspecified, drawn in heavy red line
    dike_lith
    General lithologic classification as specified below: Unspecified Mafic Felsic Mafic and felsic lamprophyre type: character width: 20 output width: 20 (Source: AAT data dictionary)
    ValueDefinition
    unspecified 
    dike_age
    Free form field, usage same as unit_age field from unit coding specifications.

    type: character width: 60 output width: 60 (Source: AAT data dictionary)
    ValueDefinition
    unknown 
    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
    NH001Bennett, D. S, , Wittkop, C.A., and Dicken, C.L., 2006 , Bedrock Geologic Map of New Hampshire - A Digital Representation of the Lyons and others 1997 map and ancillary files: U.S. Geological Survey Data Series 215, scale 1:250,000, CD-ROM.
    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)
    • Suzanne W. Nicholson
    • Connie L. Dicken
    • John D. Horton
    • Michael P. Foose
    • Julia A.L. Mueller
    • Rudi Hon
  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?
    nh geol (source 1 of 3)
    U.S. Geological Survey, and Survey, N.H. Geological, 2006, Bedrock Geologic Map of New Hampshire A Digital Representation of the Lyons and others 1997 map and ancillary files: U.S. Geological Survey, Reston, Virginia.

    Online Links:

    • none

    Type_of_Source_Media: vector
    Source_Scale_Denominator: 250000
    Source_Contribution: provided geology for state map
    state boundaries (source 2 of 3)
    Johnson, Bruce R., 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: 100000
    Source_Contribution: provided linework of the conterminous state boundaries
    lithclass (source 3 of 3)
    Johnson, Bruce R., 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: digital data
    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 11)
    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 11)
    C.L. Dicken obtained the digital geologic map of New Hampshire from Derek Bennett via ftp (April 2006). 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 CODE. The values from CODE where then calculated into a new field called orig_label.
    Date: 2006 (process 3 of 11)
    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 11)
    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. NH001) 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 11)
    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 11)
    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 11)
    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 11)
    Once the .aat and the .pat were populated with the correct attributes, the coverage was exported as an .e00 file (NHgeol_lcc.e00).

    Then it was unprojected into geographic coordinates and exported again (NHgeol_dd.e00).
    Date: 2006 (process 9 of 11)
    Faults were extracted from the coverage and created a separate fault coverage (NHfaults_lcc) and then exported (NHfaults_lcc.e00).
    Date: 2006 (process 10 of 11)
    Dikes were extracted from the coverage and created a separate dike coverage (NHdike_lcc) and then exported (NHdike_lcc.e00).
    Date: 2006 (process 11 of 11)
    Finally, the geology lines, geology polygons, faults and dikes 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 New Hampshire 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)
  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?
    • Availability in digital form:
      Data format: Geologic units and structural features in format ARC/INFO export (version 9.0)
      Network links: http://pubs.usgs.gov/of/2006/1272/
    • Cost to order the data: none


Who wrote the metadata?

Dates:
Last modified: 28-Aug-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/nh.faq.html>
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