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 (decimal degrees)

East_Bounding_Coordinate: -74.878708 (decimal degrees)

North_Bounding_Coordinate: 39.839458 (decimal degrees)

South_Bounding_Coordinate: 38.450516 (decimal degrees)

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

Enumerated_Domain:

Enumerated_Domain_Value: bgd

Enumerated_Domain_Value_Definition: Banded Gneiss

Enumerated_Domain:

Enumerated_Domain_Value: bm

Enumerated_Domain_Value_Definition: Bryn Mawr Formation

Enumerated_Domain:

Enumerated_Domain_Value: c

Enumerated_Domain_Value_Definition: Cockeysville Marble

Enumerated_Domain:

Enumerated_Domain_Value: gb

Enumerated_Domain_Value_Definition: Gabbro

Enumerated_Domain:

Enumerated_Domain_Value: grd

Enumerated_Domain_Value_Definition: Port Deposit Granodiorite

Enumerated_Domain:

Enumerated_Domain_Value: grn

Enumerated_Domain_Value_Definition: Arden Granite

Enumerated_Domain:

Enumerated_Domain_Value: Km

Enumerated_Domain_Value_Definition: Magothy Formation

Enumerated_Domain:

Enumerated_Domain_Value: Kmlns

Enumerated_Domain_Value_Definition: Mt. Laurel-Navesink Formation

Enumerated_Domain:

Enumerated_Domain_Value: Kmv

Enumerated_Domain_Value_Definition: Merchantville Formation

Enumerated_Domain:

Enumerated_Domain_Value: Kp

Enumerated_Domain_Value_Definition: Potomac Formation

Enumerated_Domain:

Enumerated_Domain_Value: Krb

Enumerated_Domain_Value_Definition: Redbank Formation

Enumerated_Domain:

Enumerated_Domain_Value: Kw

Enumerated_Domain_Value_Definition: Wenonah Formation

Enumerated_Domain:

Enumerated_Domain_Value: pt

Enumerated_Domain_Value_Definition: Pegmatite

Enumerated_Domain:

Enumerated_Domain_Value: sp

Enumerated_Domain_Value_Definition: Serpentine

Enumerated_Domain:

Enumerated_Domain_Value: Tb

Enumerated_Domain_Value_Definition: Unit B

Enumerated_Domain:

Enumerated_Domain_Value: Tc

Enumerated_Domain_Value_Definition: Unit C

Enumerated_Domain:

Enumerated_Domain_Value: Tch

Enumerated_Domain_Value_Definition: Chesapeake Group

Enumerated_Domain:

Enumerated_Domain_Value: Tr

Enumerated_Domain_Value_Definition: Rancocas Formation

Enumerated_Domain:

Enumerated_Domain_Value: Water

Enumerated_Domain_Value_Definition: water

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

Enumerated_Domain:

Enumerated_Domain_Value: bgd;0

Enumerated_Domain_Value_Definition: Banded Gneiss

Enumerated_Domain:

Enumerated_Domain_Value: bm;0

Enumerated_Domain_Value_Definition: Bryn Mawr Formation

Enumerated_Domain:

Enumerated_Domain_Value: c;0

Enumerated_Domain_Value_Definition: Cockeysville Marble

Enumerated_Domain:

Enumerated_Domain_Value: gb;0

Enumerated_Domain_Value_Definition: Gabbro

Enumerated_Domain:

Enumerated_Domain_Value: grd;0

Enumerated_Domain_Value_Definition: Port Deposit Granodiorite

Enumerated_Domain:

Enumerated_Domain_Value: grn;0

Enumerated_Domain_Value_Definition: Arden Granite

Enumerated_Domain:

Enumerated_Domain_Value: Km;0

Enumerated_Domain_Value_Definition: Magothy Formation

Enumerated_Domain:

Enumerated_Domain_Value: Kmlns;0

Enumerated_Domain_Value_Definition: Mt. Laurel-Navesink Formation

Enumerated_Domain:

Enumerated_Domain_Value: Kmv;0

Enumerated_Domain_Value_Definition: Merchantville Formation

Enumerated_Domain:

Enumerated_Domain_Value: Kp;0

Enumerated_Domain_Value_Definition: Potomac Formation

Enumerated_Domain:

Enumerated_Domain_Value: Krb;0

Enumerated_Domain_Value_Definition: Redbank Formation

Enumerated_Domain:

Enumerated_Domain_Value: Kw;0

Enumerated_Domain_Value_Definition: Wenonah Formation

Enumerated_Domain:

Enumerated_Domain_Value: pt;0

Enumerated_Domain_Value_Definition: Pegmatite

Enumerated_Domain:

Enumerated_Domain_Value: sp;0

Enumerated_Domain_Value_Definition: Serpentine

Enumerated_Domain:

Enumerated_Domain_Value: Tb;0

Enumerated_Domain_Value_Definition: Unit B

Enumerated_Domain:

Enumerated_Domain_Value: Tc;0

Enumerated_Domain_Value_Definition: Unit C

Enumerated_Domain:

Enumerated_Domain_Value: Tch;0

Enumerated_Domain_Value_Definition: Chesapeake Group

Enumerated_Domain:

Enumerated_Domain_Value: Tr;0

Enumerated_Domain_Value_Definition: Rancocas Formation

Enumerated_Domain:

Enumerated_Domain_Value: water;0

Enumerated_Domain_Value_Definition: water

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

Enumerated_Domain:

Enumerated_Domain_Value: DEbgd;0

Enumerated_Domain_Value_Definition: Banded Gneiss

Enumerated_Domain:

Enumerated_Domain_Value: DEbm;0

Enumerated_Domain_Value_Definition: Bryn Mawr Formation

Enumerated_Domain:

Enumerated_Domain_Value: DEc;0

Enumerated_Domain_Value_Definition: Cockeysville Marble

Enumerated_Domain:

Enumerated_Domain_Value: DEgb;0

Enumerated_Domain_Value_Definition: Gabbro

Enumerated_Domain:

Enumerated_Domain_Value: DEgrd;0

Enumerated_Domain_Value_Definition: Port Deposit Granodiorite

Enumerated_Domain:

Enumerated_Domain_Value: DEgrn;0

Enumerated_Domain_Value_Definition: Arden Granite

Enumerated_Domain:

Enumerated_Domain_Value: DEKm;0

Enumerated_Domain_Value_Definition: Magothy Formation

Enumerated_Domain:

Enumerated_Domain_Value: DEKmlns;0

Enumerated_Domain_Value_Definition: Mt. Laurel-Navesink Formation

Enumerated_Domain:

Enumerated_Domain_Value: DEKmv;0

Enumerated_Domain_Value_Definition: Merchantville Formation

Enumerated_Domain:

Enumerated_Domain_Value: DEKp;0

Enumerated_Domain_Value_Definition: Potomac Formation

Enumerated_Domain:

Enumerated_Domain_Value: DEKrb;0

Enumerated_Domain_Value_Definition: Redbank Formation

Enumerated_Domain:

Enumerated_Domain_Value: DEKw;0

Enumerated_Domain_Value_Definition: Wenonah Formation

Enumerated_Domain:

Enumerated_Domain_Value: DEpt;0

Enumerated_Domain_Value_Definition: Pegmatite

Enumerated_Domain:

Enumerated_Domain_Value: DEsp;0

Enumerated_Domain_Value_Definition: Serpentine

Enumerated_Domain:

Enumerated_Domain_Value: DETb;0

Enumerated_Domain_Value_Definition: Unit B

Enumerated_Domain:

Enumerated_Domain_Value: DETc;0

Enumerated_Domain_Value_Definition: Unit C

Enumerated_Domain:

Enumerated_Domain_Value: DETch;0

Enumerated_Domain_Value_Definition: Chesapeake Group

Enumerated_Domain:

Enumerated_Domain_Value: DETr;0

Enumerated_Domain_Value_Definition: Rancocas Formation

Enumerated_Domain:

Enumerated_Domain_Value: DEwater;0

Enumerated_Domain_Value_Definition: water

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:

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

Enumerated_Domain_Value: Cretaceous-Tertiary

Enumerated_Domain_Value: Paleozoic

Enumerated_Domain_Value: Tertiary

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

Enumerated_Domain_Value: gabbro

Enumerated_Domain_Value: gneiss

Enumerated_Domain_Value: granite

Enumerated_Domain_Value: granodiorite

Enumerated_Domain_Value: limestone

Enumerated_Domain_Value: mica schist

Enumerated_Domain_Value: pegmatite

Enumerated_Domain_Value: sand

Enumerated_Domain_Value: serpentinite

Enumerated_Domain_Value: silt

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

Enumerated_Domain_Value: dolostone (dolomite)

Enumerated_Domain_Value: gneiss

Enumerated_Domain_Value: sand

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

Enumerated_Domain:

Enumerated_Domain_Value: 7

Enumerated_Domain_Value_Definition: shoreline or riverbank

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.

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.

Resource_Description:

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/

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: FGDC Content Standards for Digital Geospatial
Metadata (\"CSDGM version 2\")

Metadata_Standard_Version: FGDC-STD-001-1998