Driftless Areas in Illinois
Entry ID: IGDNR_DRIFTLESS
|[ Get Data ]|
This is an Arc/Info polygon data set containing driftless areas in Illinois.|
These areas are analogous to areas of the state where the bedrock surface is
not buried. Data are originally from the Buried Bedrock Surface map (1:500,000)
by Herzog et al. (1994) and the related ISGS Arc*path_name_suppressed*/bedtopo.
There are no tabular data associated with the spatial data in this data set.
The nominal scale is 1:500,000.
Purpose: Appropriate applications are regional or statewide studies, preferably at a
scale of 1:500,000. These data can be used in conjunction with buried bedrock
surface, loess, glacial boundary, and drift thickness information to
demonstrate various aspects of the unglaciated portions of Illinois.
Most recent updates to the data:
Edition 1.0 of these data were reviewed for internal logical consistency in
June, 1998. As a result, tics were replaced, and COVER-ID values were
recalculated to be unique. See logical consistency report and process steps for
May, 1998 for more details. The updated data set (this one) is edition 1.1.
Description: Data available in Arc/Info export format.
Link: VIEW EXTENDED METADATA
Description: FGDC metadata on Driftless Areas in Illinois.
|N: 42.0||S: 37.0||E: -87.0||W: -90.0||
Data Set Citation
Illinois State Geological Survey
Dataset Title: Driftless Areas in Illinois
Dataset Series Name: ISGS GIS Database
Dataset Release Date: 1994
Dataset Release Place: Champaign, Illinois
Dataset Publisher: Illinois State Geological Survey
Issue Identification: driftless
Data Presentation Form: map
> NORTH AMERICA
VERTICAL LOCATION > LAND SURFACE
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ILLINOIS
|LAND SURFACE >EROSION/SEDIMENTATION >STRATIGRAPHIC SEQUENCE [Definition]|
|PALEOCLIMATE >LAND RECORDS >GLACIATION [Definition]|
|PALEOCLIMATE >LAND RECORDS >LOESS [Definition]|
|PALEOCLIMATE >LAND RECORDS >STRATIGRAPHIC SEQUENCE [Definition]|
|SOLID EARTH >ROCKS/MINERALS/CRYSTALS >BEDROCK LITHOLOGY [Definition]|
|SOLID EARTH >ROCKS/MINERALS/CRYSTALS >SEDIMENTARY ROCKS [Definition]|
|SOLID EARTH >TECTONICS >PLATE TECTONICS >STRATIGRAPHIC SEQUENCE [Definition]|
ISO Topic Category
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These data are not to be used for commercial profit.
|Geographic Information Systems|
Data Set Progress
Geological Survey, Dept. of Natural Resources, Illinois
Data Center URL: http://www.isgs.uiuc.edu/
Distribution_Format: Arc/Info export format
Fees: No fees
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Email: stiff at geoserv.isgs.uiuc.edu
Illinois State Geological Survey
615 East Peabody Drive
Province or State: Illinois
Postal Code: 61820