Glacial Drift: Thickness and Character [Illinois] - Big Ten Academic Alliance Geoportal

Glacial Drift: Thickness and Character [Illinois] Full Details

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Title:: Glacial Drift: Thickness and Character [Illinois]
Description:: Unconsolidated deposits, mainly glacial drift, overlie the bedrock surface in most of Illinois. Data are originally from ISGS Circular 490 by Piskin and Bergstrom (1975), Plate 1. Contour lines are coded with thickness, and polygons (areas between contours) are coded with range of thickness. ISGS, 1994 (revised 1998).
Creator:: Illinois State Geological Survey
Provider:: Illinois Geospatial Data Clearinghouse
Resource Class:: Datasets and Imagery
Theme:: Imagery
Temporal Coverage:: 1994
Date Issued:: 1994
Place:: Illinois
Access Rights:: Public
Format:: Shapefile
Language:: English
Date Added:: 2021-04-27