Identification_Information:

Citation:

Citation_Information:

Originator: Suzanne W. Nicholson

Originator: Connie L. Dicken

Originator: Michael P. Foose

Originator: Julia Mueller

Publication_Date: 2004

Title: The Upper Midwest States: Minnesota, Wisconsin, Michigan,
Illinois and Indiana - The State of Illinois

Edition: version 1.0

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report

Issue_Identification: 2004-1355

Publication_Information:

Publication_Place: Reston, VA

Publisher: U.S. Geological Survey

Online_Linkage: http://pubs.usgs.gov/of/2004/1355/

Larger_Work_Citation:

Citation_Information:

Originator: Suzanne W. Nicholson

Originator: Connie L. Dicken

Originator: Michael P. Foose

Originator: Julia A.L. Mueller

Publication_Date: 2004

Title: Integrated geologic map databases for the United States: The
Upper Midwest States: Minnesota, Wisconsin, Michigan, Illinois and
Indiana

Edition: version 1.0

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report

Issue_Identification: 2004-1355

Publication_Information:

Publication_Place: Reston, VA

Publisher: U.S. Geological Survey

Online_Linkage: http://pubs.usgs.gov/of/2004/1355/

Description:

Abstract: These metadata are specifically for the State of Illinois, one
state in the national compilation of state geologic map databases. The
digital geologic map data was prepared by Illinois Natural Resources
Geospatial Data Clearinghouse. 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
CONUSdocumentationMW.pdf, 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 CONUSdocumentationMW.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.

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: 2004

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -91.86258638

East_Bounding_Coordinate: -86.79863184

North_Bounding_Coordinate: 42.86272148

South_Bounding_Coordinate: 36.83233566

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: geology

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: USA

Place_Keyword: Illinois

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: US17 = Illinois

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

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://geology.usgs.gov/dm

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 Illinois state boundary and those arcs intersecting it: The
accuracy of the state boundary arcs is based on the 1:100000 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, CONUSdocumentationMW.pdf))

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: Illinois State Geological Survey

Publication_Date: 1996

Title: Bedrock Geology of Illinois

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: ISGS GIS Database

Issue_Identification: bedgeo

Publication_Information:

Publication_Place: Champaign, Illinois

Publisher: Illinois State Geological Survey

Source_Scale_Denominator: 500,000

Type_of_Source_Media: digital map

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1996

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: IL002

Source_Contribution: Provided linework for geology coverage.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Willman, H.B

Originator: Frye, J.C.

Originator: Simon, J.A.

Originator: Clegg, K.E.

Originator: Swann, D.H.

Originator: Atherton, E.

Originator: Collinson, C.

Originator: Lineback, J.

Originator: Buschbach, T.C.

Publication_Date: 1967

Title: Geologic Map of Illinois

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: ISGS map

Issue_Identification: Geologic Map of Illinois

Publication_Information:

Publication_Place: Capitol Heights, MD

Publisher: Williams and Heintz Map Corp.

Source_Scale_Denominator: 500,000

Type_of_Source_Media: mylar map

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1967

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: IL001

Source_Contribution: provided unit descriptions

Source_Information:

Source_Citation:

Citation_Information:

Originator: Bruce R. Johnson

Originator: Beth Leveritch

Publication_Date: unpublished material

Title: 1:100,000 Scale State Boundaries of the Conterminous United
States

Geospatial_Data_Presentation_Form: vector digital data

Source_Scale_Denominator: 100,000

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 199808

Source_Currentness_Reference: unknown

Source_Citation_Abbreviation: US001

Source_Contribution: Provided linework for state boundaries

Source_Information:

Source_Citation:

Citation_Information:

Originator: Bruce R. Johnson

Publication_Date: unpublished material

Title: Geologic Map Unit Classification, ver. 6.1

Geospatial_Data_Presentation_Form: unknown

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: unpublished

Source_Currentness_Reference: unknown

Source_Citation_Abbreviation: Johnson Lith Class 6.1

Source_Contribution: Classification scheme used for lithology.

Process_Step:

Process_Description: 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.

Process_Date: 2003-2004

Process_Step:

Process_Description:

Downloaded the digital files from Illinois Natural Resources Geospatial
Data Clearinghouse website at http://www.isgs.uiuc.edu/nsdihome/

Imported bedgeo.e00 into a coverage and reprojected the data 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

No extraneous attributes were in the table, therefore no attributes were
deleted.

(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)

The only attribute in the table is bed-geo.

The values from bed-geo were calculated into a new field called
orig_label.

Process_Date: 20031208

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: 20040315

Process_Step:

Process_Description:

In order to prepare a uniform .pat file, the following attributes were
exported from our standardized database for Illinois 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. IL001) 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 (must be \>50% of unit), using
standardized data dictionary

rocktype2 records second most dominant lithology, using standardized
data dictionary

orig_label has the following field names from the source map:

bed-geo in Illinois

map_code in Indiana

symbol in Michigan

symbol in Wisconsin

map_label in Minnesota

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: 20040316

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 (.pat). orig_label was
used as the merge item.

Process_Date: 20040316

Process_Step:

Process_Description:

Next, in preparing the uniform arc attribute table (.aat), 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: 20040325

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 CONUSdocumentationMW.pdf).

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 CONUSdocumentationMW.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.

Process_Date: 20040325

Process_Step:

Process_Description:

Once the .aat and the .pat were populated with the correct attributes,
the coverage was exported as an .e00 file (ILgeol_lcc.e00).

Then it was unprojected into geographic coordinates and exported again
(ILgeol_dd.e00).

Process_Date: 20040325

Process_Step:

Process_Description:

The faults were extracted to generate a separate fault file. PUT was the
command used to copy the line features from the geology line coverage
into a new fault line coverage.

The data were exported as an .e00 file (ILfaults_lcc.e00) and then
unprojected into geographic coordinates and exported again
(ILfaults_dd.e00).

Process_Date: 20040326

Process_Step:

Process_Description: Finally, the geology lines, geology polygons and
fault line coverages were converted into shapefiles; in both geographic
coordinates and in Lambert Conformal Conic projection.

Process_Date: 20040326

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: il_geol.pat

Entity_Type_Definition: Polygon attribute table for the Illinois
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: IL001

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1200

Enumerated_Domain_Value_Definition: T = Tertiary

Enumerated_Domain:

Enumerated_Domain_Value: 1360

Enumerated_Domain_Value_Definition: K = Cretaceous

Enumerated_Domain:

Enumerated_Domain_Value: 1550

Enumerated_Domain_Value_Definition: PAma = Mattoon Formation

Enumerated_Domain:

Enumerated_Domain_Value: 1880

Enumerated_Domain_Value_Definition: PAb = Bond Formation

Enumerated_Domain:

Enumerated_Domain_Value: 2120

Enumerated_Domain_Value_Definition: PAm = Modesto Formation

Enumerated_Domain:

Enumerated_Domain_Value: 2480

Enumerated_Domain_Value_Definition: PAc = Carbondale Formation

Enumerated_Domain:

Enumerated_Domain_Value: 3030

Enumerated_Domain_Value_Definition: PAs = Spoon Formation

Enumerated_Domain:

Enumerated_Domain_Value: 3540

Enumerated_Domain_Value_Definition: PAa = Abbott Formation

Enumerated_Domain:

Enumerated_Domain_Value: 3820

Enumerated_Domain_Value_Definition: PAcv = Caseyville Formation

Enumerated_Domain:

Enumerated_Domain_Value: 4025

Enumerated_Domain_Value_Definition: Mcu = Upper Chesterian (Grove
Church - Tar Springs)

Enumerated_Domain:

Enumerated_Domain_Value: 4265

Enumerated_Domain_Value_Definition: Mcl = Lower Chesterian (Glen Dean -
Renault)

Enumerated_Domain:

Enumerated_Domain_Value: 5005

Enumerated_Domain_Value_Definition: Mvu = Upper Valmeyeran (Aux Vases,
Ste. Genevieve, St. Louis)

Enumerated_Domain:

Enumerated_Domain_Value: 5175

Enumerated_Domain_Value_Definition: Mvm = Middle Valmeyeran (Salem,
Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east)

Enumerated_Domain:

Enumerated_Domain_Value: 5255

Enumerated_Domain_Value_Definition: Mvl = Lower Valmeyeran
(Keokuk-Sedalia)

Enumerated_Domain:

Enumerated_Domain_Value: 5420

Enumerated_Domain_Value_Definition: Mk = Kinderhookian

Enumerated_Domain:

Enumerated_Domain_Value: 5810

Enumerated_Domain_Value_Definition: Du = Upper Devonian

Enumerated_Domain:

Enumerated_Domain_Value: 5880

Enumerated_Domain_Value_Definition: Dm = Middle Devonian

Enumerated_Domain:

Enumerated_Domain_Value: 6170

Enumerated_Domain_Value_Definition: Dl = Lower Devonian

Enumerated_Domain:

Enumerated_Domain_Value: 6700

Enumerated_Domain_Value_Definition: S = Silurian

Enumerated_Domain:

Enumerated_Domain_Value: 7390

Enumerated_Domain_Value_Definition: Om = Maquoketa

Enumerated_Domain:

Enumerated_Domain_Value: 7550

Enumerated_Domain_Value_Definition: Og = Galena-Platteville

Enumerated_Domain:

Enumerated_Domain_Value: 8160

Enumerated_Domain_Value_Definition: Oa = Ancell

Enumerated_Domain:

Enumerated_Domain_Value: 8420

Enumerated_Domain_Value_Definition: Op = Prairie du Chien

Enumerated_Domain:

Enumerated_Domain_Value: 8550

Enumerated_Domain_Value_Definition: CA = Cambrian

Enumerated_Domain:

Enumerated_Domain_Value: water

Enumerated_Domain_Value_Definition: water

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: T;0

Enumerated_Domain_Value_Definition: T = Tertiary

Enumerated_Domain:

Enumerated_Domain_Value: K;0

Enumerated_Domain_Value_Definition: K = Cretaceous

Enumerated_Domain:

Enumerated_Domain_Value: PAma;0

Enumerated_Domain_Value_Definition: PAma = Mattoon Formation

Enumerated_Domain:

Enumerated_Domain_Value: PAb;0

Enumerated_Domain_Value_Definition: PAb = Bond Formation

Enumerated_Domain:

Enumerated_Domain_Value: PAm;0

Enumerated_Domain_Value_Definition: PAm = Modesto Formation

Enumerated_Domain:

Enumerated_Domain_Value: PAc;0

Enumerated_Domain_Value_Definition: PAc = Carbondale Formation

Enumerated_Domain:

Enumerated_Domain_Value: PAs;0

Enumerated_Domain_Value_Definition: PAs = Spoon Formation

Enumerated_Domain:

Enumerated_Domain_Value: PAa;0

Enumerated_Domain_Value_Definition: PAa = Abbott Formation

Enumerated_Domain:

Enumerated_Domain_Value: PAcv;0

Enumerated_Domain_Value_Definition: PAcv = Caseyville Formation

Enumerated_Domain:

Enumerated_Domain_Value: Mcu;0

Enumerated_Domain_Value_Definition: Mcu = Upper Chesterian (Grove
Church - Tar Springs)

Enumerated_Domain:

Enumerated_Domain_Value: Mcl;0

Enumerated_Domain_Value_Definition: Mcl = Lower Chesterian (Glen Dean -
Renault)

Enumerated_Domain:

Enumerated_Domain_Value: Mvu;0

Enumerated_Domain_Value_Definition: Mvu = Upper Valmeyeran (Aux Vases,
Ste. Genevieve, St. Louis)

Enumerated_Domain:

Enumerated_Domain_Value: Mvm;0

Enumerated_Domain_Value_Definition: Mvm = Middle Valmeyeran (Salem,
Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east)

Enumerated_Domain:

Enumerated_Domain_Value: Mvl;0

Enumerated_Domain_Value_Definition: Mvl = Lower Valmeyeran
(Keokuk-Sedalia)

Enumerated_Domain:

Enumerated_Domain_Value: Mk;0

Enumerated_Domain_Value_Definition: Mk = Kinderhookian

Enumerated_Domain:

Enumerated_Domain_Value: Du;0

Enumerated_Domain_Value_Definition: Du = Upper Devonian

Enumerated_Domain:

Enumerated_Domain_Value: Dm;0

Enumerated_Domain_Value_Definition: Dm = Middle Devonian

Enumerated_Domain:

Enumerated_Domain_Value: Dl;0

Enumerated_Domain_Value_Definition: Dl = Lower Devonian

Enumerated_Domain:

Enumerated_Domain_Value: S;0

Enumerated_Domain_Value_Definition: S = Silurian

Enumerated_Domain:

Enumerated_Domain_Value: Om;0

Enumerated_Domain_Value_Definition: Om = Maquoketa

Enumerated_Domain:

Enumerated_Domain_Value: Og;0

Enumerated_Domain_Value_Definition: Og = Galena-Platteville

Enumerated_Domain:

Enumerated_Domain_Value: Oa;0

Enumerated_Domain_Value_Definition: Oa = Ancell

Enumerated_Domain:

Enumerated_Domain_Value: Op;0

Enumerated_Domain_Value_Definition: Op = Prairie du Chien

Enumerated_Domain:

Enumerated_Domain_Value: CA;0

Enumerated_Domain_Value_Definition: CA = Cambrian

Enumerated_Domain:

Enumerated_Domain_Value: water;0

Enumerated_Domain_Value_Definition: water

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: ILT;0

Enumerated_Domain_Value_Definition: T = Tertiary

Enumerated_Domain:

Enumerated_Domain_Value: ILK;0

Enumerated_Domain_Value_Definition: K = Cretaceous

Enumerated_Domain:

Enumerated_Domain_Value: ILPAma;0

Enumerated_Domain_Value_Definition: PAma = Mattoon Formation

Enumerated_Domain:

Enumerated_Domain_Value: ILPAb;0

Enumerated_Domain_Value_Definition: PAb = Bond Formation

Enumerated_Domain:

Enumerated_Domain_Value: ILPAm;0

Enumerated_Domain_Value_Definition: PAm = Modesto Formation

Enumerated_Domain:

Enumerated_Domain_Value: ILPAc;0

Enumerated_Domain_Value_Definition: PAc = Carbondale Formation

Enumerated_Domain:

Enumerated_Domain_Value: ILPAs;0

Enumerated_Domain_Value_Definition: PAs = Spoon Formation

Enumerated_Domain:

Enumerated_Domain_Value: ILPAa;0

Enumerated_Domain_Value_Definition: PAa = Abbott Formation

Enumerated_Domain:

Enumerated_Domain_Value: ILPAcv;0

Enumerated_Domain_Value_Definition: PAcv = Caseyville Formation

Enumerated_Domain:

Enumerated_Domain_Value: ILMcu;0

Enumerated_Domain_Value_Definition: Mcu = Upper Chesterian (Grove
Church - Tar Springs)

Enumerated_Domain:

Enumerated_Domain_Value: ILMcl;0

Enumerated_Domain_Value_Definition: Mcl = Lower Chesterian (Glen Dean -
Renault)

Enumerated_Domain:

Enumerated_Domain_Value: ILMvu;0

Enumerated_Domain_Value_Definition: Mvu = Upper Valmeyeran (Aux Vases,
Ste. Genevieve, St. Louis)

Enumerated_Domain:

Enumerated_Domain_Value: ILMvm;0

Enumerated_Domain_Value_Definition: Mvm = Middle Valmeyeran (Salem,
Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east)

Enumerated_Domain:

Enumerated_Domain_Value: ILMvl;0

Enumerated_Domain_Value_Definition: Mvl = Lower Valmeyeran
(Keokuk-Sedalia)

Enumerated_Domain:

Enumerated_Domain_Value: ILMk;0

Enumerated_Domain_Value_Definition: Mk = Kinderhookian

Enumerated_Domain:

Enumerated_Domain_Value: ILDu;0

Enumerated_Domain_Value_Definition: Du = Upper Devonian

Enumerated_Domain:

Enumerated_Domain_Value: ILDm;0

Enumerated_Domain_Value_Definition: Dm = Middle Devonian

Enumerated_Domain:

Enumerated_Domain_Value: ILDl;0

Enumerated_Domain_Value_Definition: Dl = Lower Devonian

Enumerated_Domain:

Enumerated_Domain_Value: ILS;0

Enumerated_Domain_Value_Definition: S = Silurian

Enumerated_Domain:

Enumerated_Domain_Value: ILOm;0

Enumerated_Domain_Value_Definition: Om = Maquoketa

Enumerated_Domain:

Enumerated_Domain_Value: ILOg;0

Enumerated_Domain_Value_Definition: Og = Galena-Platteville

Enumerated_Domain:

Enumerated_Domain_Value: ILOa;0

Enumerated_Domain_Value_Definition: Oa = Ancell

Enumerated_Domain:

Enumerated_Domain_Value: ILOp;0

Enumerated_Domain_Value_Definition: Op = Prairie du Chien

Enumerated_Domain:

Enumerated_Domain_Value: ILCA;0

Enumerated_Domain_Value_Definition: CA = Cambrian

Enumerated_Domain:

Enumerated_Domain_Value: ILwater;0

Enumerated_Domain_Value_Definition: water

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: IL001

Enumerated_Domain_Value_Definition: Willman, H.B., and others,
(compilers), 1967, Geologic Map of Illinois: Illinois State Geological
Survey, scale= 1:500,000, paper.

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: Cambrian

Enumerated_Domain_Value: Cretaceous

Enumerated_Domain_Value: Devonian

Enumerated_Domain_Value: Mississippian

Enumerated_Domain_Value: Ordovician

Enumerated_Domain_Value: Pennsylvanian

Enumerated_Domain_Value: Silurian

Enumerated_Domain_Value: Tertiary

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 6.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: black shale

Enumerated_Domain_Value: dolostone (dolomite)

Enumerated_Domain_Value: limestone

Enumerated_Domain_Value: sand

Enumerated_Domain_Value: sandstone

Enumerated_Domain_Value: shale

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: chert

Enumerated_Domain_Value: clay or mud

Enumerated_Domain_Value: dolostone (dolomite)

Enumerated_Domain_Value: limestone

Enumerated_Domain_Value: sandstone

Enumerated_Domain_Value: shale

Enumerated_Domain_Value: siltstone

Detailed_Description:

Entity_Type:

Entity_Type_Label: il_geol.aat

Entity_Type_Definition: Arc attribute table for Illinois 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: 30

Enumerated_Domain_Value_Definition: fault, sense of displacement unknown
or undefined, location certain

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: IL001

Enumerated_Domain_Value_Definition: Willman, H.B., and others,
(compilers), 1967, Geologic Map of Illinois: Illinois State Geological
Survey, scale= 1:500,000, paper.

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, CONUSdocumentationMW.pdf)

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 dominant lithology

rocktype2 second most dominant 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: USGS OFR 2004-1355

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ARC/INFO export

Format_Version_Number: 8.3

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/2004/1355

Fees: none

Metadata_Reference_Information:

Metadata_Date: 20040518

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