Bedrock Geology of Illinois

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: 1996
Title: Bedrock Geology of Illinois
Edition:
1.0 (Note: Although this data set has been in existence for several years, formal version numbers have not been previously assigned. Thus, this and all previous versions are arbitrarily assigned as version 1.0.)
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
Other_Citation_Details: The map scale is 1:500,000
Online_Linkage:
Downloadable Data (Shift-Click to download data file) <URL:http://www.isgs.uiuc.edu/nsdihome/browse/statewide/bedgeo.e00>
Online_Linkage:
Browse Graphic (GIF) Screen-size image representing the nature of the data. <URL:http://www.isgs.uiuc.edu/nsdihome/browse/statewide/bedgeob.gif>
Online_Linkage:
Text (.txt) version of this Metadata file. (Shift-Click to download documentation) <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/bedgeo.txt>
Online_Linkage:
HTML (.html) version of this Metadata file. (Shift-Click to download documentation) <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/bedgeo.html>

Description:
Abstract:
This map shows the distribution and extent of the bedrock geologic units within the State of Illinois, as depicted on the Geologic Map of Illinois (1967) by Willman and others, published by the Illinois State Geologic Survey.

Purpose:
This data can be used for any project which requires bedrock data at a scale of 1:500,000. This data should not be used at a scale larger than 1:500,000. Not suitable for site specific work.

Supplemental_Information:
Detailed structural features are available in separate data sets. See cross references.

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1967
Currentness_Reference: publication date

Status:
Progress: Complete
Maintenance_and_Update_Frequency: as needed

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -91.5826823
East_Bounding_Coordinate: -87.38401652
North_Bounding_Coordinate: 42.49563968
South_Bounding_Coordinate: 36.95351896

Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: geology
Theme_Keyword: bedrock
Theme_Keyword: statewide
Theme_Keyword: Illinois basin
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: state
Place_Keyword: Illinois
Temporal:
Temporal_Keyword_Thesaurus: none
Temporal_Keyword: Tertiary
Temporal_Keyword: Cretaceous
Temporal_Keyword: Pennsylvanian
Temporal_Keyword: Mississippian
Temporal_Keyword: Devonian
Temporal_Keyword: Silurian
Temporal_Keyword: Ordovician
Temporal_Keyword: Cambrian

Access_Constraints: none

Use_Constraints:
Should be used at a scale of 1:500,000 or smaller. For regional studies only. Not suitable for site specific work.

Reproduction or redistribution of copyrighted digital data sets or products derived therefrom outside of licensee's organization or entity is expressly forbidden. The only exception is redistribution to consultants working for the licensee, and then only for purposes, related to work for the licensee. Such consultants may not further reproduce or redistribute these data sets. None of these data shall be electronically duplicated on magnetic or optical media for use by others, in whole or in part, without permission of the appropriate custodial division within DNR.

Any hardcopies utilizing DNR 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 DNR data sets, nor to imply that changes they made were approved by DNR.

These data are not to be used for commercial profit.

Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Illinois State Geological Survey
Contact_Position: Information Office
Contact_Address:
Address_Type: mailing and physical address
Address: 615 East Peabody Drive
City: Champaign
State_or_Province: Illinois
Postal_Code: 61820
Country: USA
Contact_Voice_Telephone: 217-333-4747
Contact_TDD/TTY_Telephone: 217-785-0211
Contact_Facsimile_Telephone: 217-244-0802
Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu
Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time

Data_Set_Credit:
This source map was compiled in 1967 by H. B. Willman, John C. Frye, Jake A. Simon, Kenneth E. Clegg, D. H. Swann, Elwood Atherton, Charles Collinson, Jerry Lineback, and T. C. Buschbach. 

 The following people reviewed all or portions of this coverage:
 ARCS 1/19/95   Matthew H. Riggs
 ARCS 1/21/95   Sandrine Elinski
 ARCS 2/1/95    C. Pius Weibel
 ARCS 2/8/95    Curtis Abert
 POLY 2/1/95    C. Pius Weibel
 POLY 2/8/95    Curt Abert

 Documentation:
 ISGS Staff, D. Nelson and S. Beaverson
Native_Data_Set_Environment:
SunOS UNIX, ARC/INFO version 7.0.4

Cross_Reference:
Citation_Information:
Originator: Barb Stiff, Illinois State Geological Survey
Publication_Date: 1997
Title: Customized Arc/Info Shadeset bjselect.shd
Geospatial_Data_Presentation_Form: Arc/Info shadeset file
Series_Information:
Series_Name: ISGS GIS Database
Issue_Identification: bjselect.shd
Other_Citation_Details:
This shadeset should be used in ArcPlot in conjunction with lookup table /gisdb/ancillary!bedgeo.lup to produce a bedrock geology map in standard ISGS colors. AML syntax is: 
 /*---------------
 shadeset bjselect
 polygonshades *path_name_suppressed*/bedgeo bed-geo ~
 /gisdb/ancillary!bedgeo.lup
 /*---------------
Cross_Reference:
Citation_Information:
Originator: Barb Stiff, Illinois State Geological Survey
Publication_Date: 1997
Title: Customized Arc/Info Look Up Table bedgeo.lup
Geospatial_Data_Presentation_Form: INFO file
Series_Information:
Series_Name: ISGS GIS Database
Issue_Identification: ancillary!bedgeo.lup
Other_Citation_Details:
This look up table should be used in ArcPlot in conjunction with shadeset bjselect.shd to produce a bedrock geology map in standard ISGS colors. AML syntax is: 
 /*---------------
 shadeset bjselect
 polygonshades *path_name_suppressed*/bedgeo bed-geo ~
 /gisdb/ancillary!bedgeo.lup
 /*---------------
Cross_Reference:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: 1995
Title:
Structural Features in Illinois: Line Features (Axial or Flexure) of Anticlines, Synclines and Monoclines
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: ISGS GIS Database
Issue_Identification: structclines
Publication_Information:
Publication_Place: Champaign, IL
Publisher: Illinois State Geological Survey
Other_Citation_Details:
The map scale is 1:500,000. Included features are anticlines, synclines and monoclines as depicted in ISGS Bulletin 100, Plate 1.
Online_Linkage:
Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/structclines.html>

Cross_Reference:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: 1995
Title: Structural Features in Illinois: Faults
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: ISGS GIS Database
Issue_Identification: structfaults
Publication_Information:
Publication_Place: Champaign, IL
Publisher: Illinois State Geological Survey
Other_Citation_Details:
The map scale is 1:500,000. Included features are faults as depicted in ISGS Bulletin 100, Plate 1.
Online_Linkage:
Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/structfaults.html>

Cross_Reference:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: 1995
Title:
Structural Features in Illinois: Point Locations of Impact Features, Explosion Features, Silurian Reefs, and Buried Precambrian Hills
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: ISGS GIS Database
Issue_Identification: structpnts
Publication_Information:
Publication_Place: Champaign, IL
Publisher: Illinois State Geological Survey
Other_Citation_Details:
The map scale is 1:500,000. Includes impact features, explosion features, Silurian reefs, and buried Precambrian hills as depicted in ISGS Bulletin 100, Plate 1.
Online_Linkage:
Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/structpnts.html>

Cross_Reference:
Citation_Information:
Originator: Illinois State Geological Survey
Publication_Date: 1995
Title:
Structural Features in Illinois: Areal Extent of Anticlines, Domes, and the Glasford Disturbance (Polygon Features)
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: ISGS GIS Database
Issue_Identification: structpoly
Publication_Information:
Publication_Place: Champaign, IL
Publisher: Illinois State Geological Survey
Other_Citation_Details:
The map scale is 1:500,000. Included features are anticlines, domes and Glasford Disturbance as depicted in ISGS Bulletin 100, Plate 1.
Online_Linkage:
Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/structpoly.html>

Cross_Reference:
Citation_Information:
Originator:
Herzog, B.L.. B.J. Stiff, C.A. Chenoweth, K.L. Warner, J.B. Sievering, C. Avery
Publication_Date: 1994
Title: Buried Bedrock Surface of Illinois
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: ISGS GIS Database
Issue_Identification: bedtopo
Publication_Information:
Publication_Place: Champaign, Illinois
Publisher: Illinois State Geological Survey
Other_Citation_Details:
Scale is 1:500,000. This is the digital version of ISGS Map Series, Illinois Map 5.
Online_Linkage:
Data Set Documentation <URL:http://www.isgs.uiuc.edu/nsdihome/outmeta/bedtopo.html>

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The published paper geological map from the ISGS was the source for feature attributes. Attribute code assignments were checked by three individuals and are believed to fully representative of the source document.

Logical_Consistency_Report:
Chain-node topology is present. This data set was checked for complete chain-node topology (no dangling arcs, except where appropriate), boundary values appropriate for map projection and map units, and appropriate "fuzzy" tolerances. There are no known arc attribute values outside the appropriate value domains. There are 116 dangling arcs. representing the endpoints of fault lines as depicted on source maps.

Completeness_Report:
This data set contains geologic units and fault lines as depicted on the source map. There are many additional features on the source map that are not depicted in this coverage, for example, geologic columns, cross-sections and other thematic insets. Quaternary materials are not shown.

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal positional accuracy of this data with respect to the source map was verified by three individuals by visual comparison (manual overlay) of source maps and hard-copy plots. Arcs within one line-width of source mylars were deemed acceptable.

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
H. B. Willman, John C. Frye, Jake A. Simon, Kenneth E. Clegg, D. H. Swann, Elwood Atherton, Charles Collinson, Jerry Lineback, and T. C. Buschbach.
Publication_Date: 1967
Title: Geologic Map of Illinois
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: ISGS map
Issue_Identification: same as title
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: none
Source_Contribution:
geologic unit outlines and attributes, and fault lines.

Process_Step:
Process_Description:
A mylar copy of this map was ordered from the publisher (William and Heintz). The mylar contained a state boundary, counties, township lines, geologic unit boundaries and labels. The map scale was 1:500,000.
Process_Date: unknown

Process_Step:
Process_Description:
A TIC coverage was created by plotting a copy of the townships coverage, *path_name_suppressed*/townships, and comparing the township lines in this plot to those on the mylar. The township intersections which corresponded within linewidth accuracy were marked and used to create a TIC coverage.
Process_Date: unknown

Process_Step:
Process_Description:
Larger scale PMTs were created of the mylar coverage. These PMTs were used during the digitizing process. The statewide coverage was split into 3 separate areas (for there were 3 people digitizing) These were northwest, southwest and east. The arcs were digitized for each area and the areas combined to form a statewide bedrock geology map.
Process_Date: unknown

Process_Step:
Process_Description:
Once the linework had been checked (several times) the coverage was built as a polygon coverage. Labels were then created using the CREATELABELS command. A plot was then generated containing the labels for each polygon as well as the arcs. This plot was then compared to the published map and a table was created containing the polygon label and the code for the designated geologic unit. This table was entered into INFO and an item was added to both the poly coverage and the info table. A relate was established and the geologic values moved to the appropriate item in the polygon PAT.
Process_Date: unknown

Process_Step:
Process_Description:
The final coverage is a single precision coverage and had been cleaned with a fuzzy tol of 1 and dangle of 1. It was reviewed as described under data quality information.
Process_Date: unknown

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 747
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 2314
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 748

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Standard_Parallel: 33 0 0.000
Standard_Parallel: 45 0 0.000
Longitude_of_Central_Meridian: -89 30 0.000
Latitude_of_Projection_Origin: 33 0 0.000
False_Easting: 914400.00000 meters
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: unknown
Ordinate_Resolution: unknown
Planar_Distance_Units: fee
Geodetic_Model:
Horizontal_Datum_Name: NAD27
Ellipsoid_Name: CLARKE1866
Semi-major_Axis: 6378206.4 meters
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview: 
 Attribute items are in typical ARC/INFO feature class format.
 Those requiring additional explanation are:

 Polygon Attributes:
 BED-GEO - four digit numerical designator for name of geologic unit

 BED-GEO               GEOLOGIC UNIT
 1200           Tertiary      - Undifferentiated

 1360           Cretaceous    - Undifferentiated

 1550           Pennsylvanian - Mattoon
 1880           Pennsylvanian - Bond
 2120           Pennsylvanian - Modesto
 2480           Pennsylvanian - Carbondale
 3030           Pennsylvanian - Spoon
 3540           Pennsylvanian - Abbott
 3820           Pennsylvanian - Caseyville

 4025           Mississippian - Upper Chesterian
 4265           Mississippian - Lower Chesterian
 5005           Mississippian - Upper Valmeyeran
 5175           Mississippian - Middle Valmeyeran
 5255           Mississippian - Lower Valmeyeran
 5420           Mississippian - Kinderhookian

 5810           Devonian      - Upper
 5880           Devonian      - Middle
 6170           Devonian      - Lower

 6700           Silurian     - Undifferentiated

 7390           Ordovician    - Maquoketa
 7550           Ordovician    - Galena-Platteville
 8160           Ordovician    - Ancell
 8420           Ordovician    - Prairie du Chien

 8550           Cambrian      - Undifferentiated


 Arc Attributes:
 FAULT - indicates whether or not arc represents a fault
 0 - other
 1 - fault
Entity_and_Attribute_Detail_Citation: none

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Illinois State Geological Survey
Contact_Position: Information Office
Contact_Address:
Address_Type: mailing and physical address
Address: 615 East Peabody Drive
City: Champaign
State_or_Province: Illinois
Postal_Code: 61820
Country: USA
Contact_Voice_Telephone: 217-333-4747
Contact_TDD/TTY_Telephone: 217-785-0211
Contact_Facsimile_Telephone: 217-244-0802
Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu
Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time

Distribution_Liability:
The Illinois Department of Natural Resources (DNR) provides these geographic data "as is." DNR makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. DNR further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of DNR, no warranty, expressed or implied, is made by DNR regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.

In no event shall the DNR have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by DNR.

Resource_Description:
An Arc/Info .e00 (export) file is currently available free of charge at the Illinois Natural Resources Geospatial Data Clearinghouse. Refer to the Citation Information portion of this file for access to downloadable data and metadata, and a visual (GIF image) representation of the data.

Shift-click to download the data set and related documentation. (Data and metadata offered separately, please download both files.)

Metadata_Reference_Information:
Metadata_Date: 19980731
Metadata_Review_Date: 19980731
Metadata_Future_Review_Date: 200007
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Illinois State Geological Survey
Contact_Position: Information Office
Contact_Address:
Address_Type: mailing and physical address
Address: 615 East Peabody Drive
City: Champaign
State_or_Province: Illinois
Postal_Code: 61820
Country: USA
Contact_Voice_Telephone: 217-333-4747
Contact_TDD/TTY_Telephone: 217-785-0211
Contact_Facsimile_Telephone: 217-244-0802
Contact_Electronic_Mail_Address: isgs@isgs.uiuc.edu
Hours_of_Service: 8:00 a.m. - 4:30 p.m., Monday-Friday, U.S. Central Time
Metadata_Standard_Name:
FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

Illinois Natural Resources Geospatial Data Clearinghouse

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