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Integrated Geologic Map Databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Connie L. Dicken
Originator: Suzanne W. Nicholson
Originator: John D. Horton
Originator: Scott A. Kinney
Originator: Gregory Gunther
Originator: Michael P. Foose
Originator: Julia A.L. Mueller
Publication_Date: 2005
Title:
Integrated Geologic Map Databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia
Edition: version 1.0
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 2005-1325
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: http://pubs.usgs.gov/of/2005/1325/
Description:
Abstract:
This report presents the results of the USGS Mineral Resources Program activity to compile a national-scale geologic map database at a nominal scale of 1:500,000, to support national and regional level projects, including mineral resource and geoenvironmental assessments. The only comprehensive sources for input into 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 as regional blocks of 3 degree quadrangles 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 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 CONUS documentation, standards for the conterminous U.S. are somewhat different than those for Alaska and Hawaii.
Purpose:
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 CONUS documentation of this report. 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 derived from the USGS Digial Line Graph 1:100,000 quadrangle boundaries (Johnson and Leveritch, 1998) 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.
Supplemental_Information:
This database consists of 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).
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2005
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: none planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -75.788933
East_Bounding_Coordinate: -74.878708
North_Bounding_Coordinate: 39.839458
South_Bounding_Coordinate: 38.450516
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: geology
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: USA
Place_Keyword: Delaware
Theme:
Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
Theme_Keyword: 3100 - Vector
Theme_Keyword: 3110 - ESRI
Theme_Keyword: 3112 - export
Theme_Keyword: 1100 - Geology
Theme_Keyword: 1101 - General
Place:
Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0
Place_Keyword: US10 = Delaware
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.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Suzanne W. Nicholson
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 12201 Sunrise Valley Dr. MS954
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6344
Contact_Electronic_Mail_Address: swnich@usgs.gov
Data_Set_Credit:
State Geologic Map Compilation (SGMC) activity of the National Surveys and Analysis projects of the US Geological Survey Mineral Resources Program.

Native_Data_Set_Environment:
ARC/INFO version 8.3 and 9.0 ArcView 3.2
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
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://www.nadm-geo.org/dmdt/index.html
Logical_Consistency_Report:
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.
Completeness_Report:
Bodies of water are classified as water, and the geologic units underlying them are not included in this coverage.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Accuracy of Delaware 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).

Those internal arcs intersecting the state boundary were extended or shortened as needed to complete polygons, possibly creating a small amount of error.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Spoljaric, Nenad
Originator: Jordan, Robert R
Publication_Date: 1966
Title: Generalized Geologic Map of Delaware
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Delaware
Publisher: Delaware Geological Survey
Online_Linkage: none
Source_Scale_Denominator: 300,000
Type_of_Source_Media: vector
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1966
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: de geology
Source_Contribution: provided geology for state map
Source_Information:
Source_Citation:
Citation_Information:
Originator: Bruce R. Johnson
Publication_Date: unpublished
Title:
1:100,000 Scale State Boundaries of the Conterminous United States
Geospatial_Data_Presentation_Form: vector data
Other_Citation_Details:
Arc/INFO coverage developed by Bruce Johnson. Derived from USGS 100,000-scale DLG boundary layer quadrangles.
Source_Scale_Denominator: 100,000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Source_Currentness_Reference: unknown
Source_Citation_Abbreviation: state boundaries
Source_Contribution: provided linework of the conterminous state boundaries
Source_Information:
Source_Citation:
Citation_Information:
Originator: Bruce R. Johnson
Publication_Date: unpublished
Title: Geologic Map Unit Classification, ver. 6.1
Geospatial_Data_Presentation_Form: unknown
Other_Citation_Details:
Document has been modified and is included in Appedices of the publication.
Source_Scale_Denominator: none
Type_of_Source_Media: online; http:/geology.usgs.gov/dm
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Source_Currentness_Reference: unknown
Source_Citation_Abbreviation: lithclass
Source_Contribution:
Source of lithologic codes and specific rock names found in ROCKTYPE1 and ROCKTYPE2.
Process_Step:
Process_Description:
The purpose of this standardization is to allow all 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 and Ric Wilson are co-coordinators for the overall State Geologic Map Compilation (SGMC) effort, with Stoeser coordinating work on the mainland states and Wilson coordinating work for Alaska and Hawaii.
Process_Date: 2003 - 2005
Process_Step:
Process_Description:
C.L. Dicken obtained the digital geologic map of Delaware from Julia Mueller. 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 map_code. The values from map_code where then calculated into a new field called orig_label.
Process_Date: 2005
Process_Step:
Process_Description:
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.
Process_Date: 2005
Process_Step:
Process_Description:
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 (renamed sgmc_label in PAT)

unit_link is an auto generated field based on map-symbol2 and the state abbreviation (e.g. IN001) 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. (renamed source in PAT).

unit_age was populated with general age assignment

rocktype1 records dominant lithology (must be >50% of unit), 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
Process_Date: 2005
Process_Step:
Process_Description:
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.
Process_Date: 2005
Process_Step:
Process_Description:
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

Process_Date: 2005
Process_Step:
Process_Description:
Arc-code was populated using the paper map source to tag the lines using the AAT line type data dictionary (see CONUS documentation 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 CONUS documentation)

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.

Process_Date: 2005
Process_Step:
Process_Description:
Once the .aat and the .pat were populated with the correct attributes, the coverage was exported as an .e00 file (DEgeol_lcc.e00).

Then it was unprojected into geographic coordinates and exported again (DEgeol_dd.e00).
Process_Date: 2005
Process_Step:
Process_Description:
Finally, the geology lines and geology polygons were converted into shapefiles; in both geographic coordinates and in Lambert Conformal Conic projection.
Process_Date: 2005
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
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_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.01
Ordinate_Resolution: 0.01
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: DE_geol.pat
Entity_Type_Definition: Polygon attribute table for the Delaware geologic coverage.
Entity_Type_Definition_Source: ESRI
Attribute:
Attribute_Label: ORIG_LABEL
Attribute_Definition:
unmodified map unit symbol from source cover.

type: character width: 12 output width: 12
Attribute_Definition_Source: Doug Stoeser
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: amp
Enumerated_Domain_Value_Definition: Amphibolite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: bgd
Enumerated_Domain_Value_Definition: Banded Gneiss
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: bm
Enumerated_Domain_Value_Definition: Bryn Mawr Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: c
Enumerated_Domain_Value_Definition: Cockeysville Marble
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: gb
Enumerated_Domain_Value_Definition: Gabbro
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: grd
Enumerated_Domain_Value_Definition: Port Deposit Granodiorite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: grn
Enumerated_Domain_Value_Definition: Arden Granite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Km
Enumerated_Domain_Value_Definition: Magothy Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kmlns
Enumerated_Domain_Value_Definition: Mt. Laurel-Navesink Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kmv
Enumerated_Domain_Value_Definition: Merchantville Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kp
Enumerated_Domain_Value_Definition: Potomac Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Krb
Enumerated_Domain_Value_Definition: Redbank Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kw
Enumerated_Domain_Value_Definition: Wenonah Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: pt
Enumerated_Domain_Value_Definition: Pegmatite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sp
Enumerated_Domain_Value_Definition: Serpentine
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tb
Enumerated_Domain_Value_Definition: Unit B
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tc
Enumerated_Domain_Value_Definition: Unit C
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tch
Enumerated_Domain_Value_Definition: Chesapeake Group
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tr
Enumerated_Domain_Value_Definition: Rancocas Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Water
Enumerated_Domain_Value_Definition: water
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ws
Enumerated_Domain_Value_Definition: Wissahickon Schist
Attribute:
Attribute_Label: SGMC_LABEL
Attribute_Definition:
orig_label + ;n where n= province number (n=0 if no province number)

type: character width: 16 output width: 16
Attribute_Definition_Source: Doug Stoeser
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: amp;0
Enumerated_Domain_Value_Definition: Amphibolite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: bgd;0
Enumerated_Domain_Value_Definition: Banded Gneiss
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: bm;0
Enumerated_Domain_Value_Definition: Bryn Mawr Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: c;0
Enumerated_Domain_Value_Definition: Cockeysville Marble
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: gb;0
Enumerated_Domain_Value_Definition: Gabbro
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: grd;0
Enumerated_Domain_Value_Definition: Port Deposit Granodiorite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: grn;0
Enumerated_Domain_Value_Definition: Arden Granite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Km;0
Enumerated_Domain_Value_Definition: Magothy Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kmlns;0
Enumerated_Domain_Value_Definition: Mt. Laurel-Navesink Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kmv;0
Enumerated_Domain_Value_Definition: Merchantville Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kp;0
Enumerated_Domain_Value_Definition: Potomac Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Krb;0
Enumerated_Domain_Value_Definition: Redbank Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kw;0
Enumerated_Domain_Value_Definition: Wenonah Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: pt;0
Enumerated_Domain_Value_Definition: Pegmatite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sp;0
Enumerated_Domain_Value_Definition: Serpentine
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tb;0
Enumerated_Domain_Value_Definition: Unit B
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tc;0
Enumerated_Domain_Value_Definition: Unit C
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tch;0
Enumerated_Domain_Value_Definition: Chesapeake Group
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tr;0
Enumerated_Domain_Value_Definition: Rancocas Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: water;0
Enumerated_Domain_Value_Definition: water
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ws;0
Enumerated_Domain_Value_Definition: Wissahickon Schist
Attribute:
Attribute_Label: unit_link
Attribute_Definition:
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
Attribute_Definition_Source: Doug Stoeser
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEamp;0
Enumerated_Domain_Value_Definition: Amphibolite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEbgd;0
Enumerated_Domain_Value_Definition: Banded Gneiss
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEbm;0
Enumerated_Domain_Value_Definition: Bryn Mawr Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEc;0
Enumerated_Domain_Value_Definition: Cockeysville Marble
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEgb;0
Enumerated_Domain_Value_Definition: Gabbro
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEgrd;0
Enumerated_Domain_Value_Definition: Port Deposit Granodiorite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEgrn;0
Enumerated_Domain_Value_Definition: Arden Granite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEKm;0
Enumerated_Domain_Value_Definition: Magothy Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEKmlns;0
Enumerated_Domain_Value_Definition: Mt. Laurel-Navesink Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEKmv;0
Enumerated_Domain_Value_Definition: Merchantville Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEKp;0
Enumerated_Domain_Value_Definition: Potomac Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEKrb;0
Enumerated_Domain_Value_Definition: Redbank Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEKw;0
Enumerated_Domain_Value_Definition: Wenonah Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEpt;0
Enumerated_Domain_Value_Definition: Pegmatite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEsp;0
Enumerated_Domain_Value_Definition: Serpentine
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DETb;0
Enumerated_Domain_Value_Definition: Unit B
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DETc;0
Enumerated_Domain_Value_Definition: Unit C
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DETch;0
Enumerated_Domain_Value_Definition: Chesapeake Group
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DETr;0
Enumerated_Domain_Value_Definition: Rancocas Formation
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEwater;0
Enumerated_Domain_Value_Definition: water
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DEws;0
Enumerated_Domain_Value_Definition: Wissahickon Schist
Attribute:
Attribute_Label: source
Attribute_Definition:
An alphanumeric code (e.g. US001) that designates the source material used.

type: character width: 6 output width: 8
Attribute_Definition_Source: Doug Stoeser
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DE001
Enumerated_Domain_Value_Definition:
Spoljaric, Nenad and Jordan, Robert R., 1966, Generalized Geologic Map of Delaware, State of Delaware, Delaware Geological Survey, scale ca. 1:300,000.
Attribute:
Attribute_Label: unit_age
Attribute_Definition:
The geologic age from the source map used.

type: character width: 60 output width: 60
Attribute_Definition_Source: Doug Stoeser
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cretaceous
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Cretaceous-Tertiary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Paleozoic
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Tertiary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: age undetermined
Attribute:
Attribute_Label: rocktype1
Attribute_Definition:
The predominant lithology found in the formation.

type: character width: 40 output width: 40
Attribute_Definition_Source: Johnson Lith Class 6.1a
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: amphibolite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: gabbro
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: gneiss
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: granite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: granodiorite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: limestone
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: mica schist
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: pegmatite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sand
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: serpentinite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: silt
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: water
Attribute:
Attribute_Label: rocktype2
Attribute_Definition:
The second most predominant lithology in the formation.

type: character width: 40 output width: 40
Attribute_Definition_Source: Johnson Lith Class 6.1
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: clay or mud
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: dolostone (dolomite)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: gneiss
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: sand
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: silt
Detailed_Description:
Entity_Type:
Entity_Type_Label: de_geol.aat
Entity_Type_Definition: Arc attribute table for Delaware geologic coverage.
Entity_Type_Definition_Source: ESRI
Attribute:
Attribute_Label: arc-code
Attribute_Definition:
Unique identifier for the line feature

type: integer width: 3 output width: 3
Attribute_Definition_Source: AAT data dictionary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: contact, location certain
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 7
Enumerated_Domain_Value_Definition: shoreline or riverbank
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 124
Enumerated_Domain_Value_Definition: state boundary
Attribute:
Attribute_Label: arc-para1
Attribute_Definition:
Used for "decorated" lines where additional information is needed.

type: integer width: 3 output width: 3
Attribute_Definition_Source: AAT data dictionary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: no additional information
Attribute:
Attribute_Label: arc-para2
Attribute_Definition:
"Scratch" field used mostly in Alaska.

type: integer width: 3 output width: 3
Attribute_Definition_Source: AAT data dictionary
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: no additional information
Attribute:
Attribute_Label: source
Attribute_Definition:
An alphanumeric code (e.g. US001) that designates the source material used.

type: character width: 6 output width: 8
Attribute_Definition_Source: Doug Stoeser
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: DE001
Enumerated_Domain_Value_Definition:
Spoljaric, Nenad and Jordan, Robert R., 1966, Generalized Geologic Map of Delaware, State of Delaware, Delaware Geological Survey, scale ca. 1:300,000.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: US001
Enumerated_Domain_Value_Definition:
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, Chapter A)
Overview_Description:
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
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey Information Services Reston-ESIC
Contact_Address:
Address_Type: mailing and physical address
Address:
U.S. Geological Survey
507 National Center
City: Reston
State_or_Province: Virginia
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone:
1-888-ASK-USGS or 1-703-648-5953
Contact_Electronic_Mail_Address: http://www.usgs.gov/contact/
Distribution_Liability:
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARC/INFO export
Format_Version_Number: 9.0
Format_Information_Content: Geologic units and structural features
File_Decompression_Technique: gzip and tar
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://pubs.usgs.gov/of/2005/1325/
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20050909
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Connie L. Dicken
Contact_Address:
Address_Type: mailing and physical address
Address: 12201 Sunrise Valley Dr. MS954
City: Reston
State_or_Province: VA
Postal_Code: 20192
Country: USA
Contact_Voice_Telephone: 703-648-6482
Contact_Electronic_Mail_Address: cdicken@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

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

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Page Contact Information: Peter Schweitzer
Page Last Modified: Monday, 03-Jul-2017 15:29:11 MDT

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