Altitude, depth, and thickness of the Galena-Platteville bedrock unit in the subcrop area of Illinois and Wisconsin / by Timothy A. Brown, Charles P. Dunning, and Jennifer B. Sharpe.
- Physical Description: 1 online resource (7 maps on 4 sheets) : color.
- Publisher: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2000.
- Distributor: Denver, Colorado : Information Services
Relief shown by contours and gradient tints.
Includes location map.
Prepared in cooperation with the U.S. Environmental Protection Agency.
|Bibliography, etc. Note:||
Includes bibliographical references (sheet 1).
|Source of Description Note:||
Description based on online resource; title from PDF title page (USGS, viewed Jan. 2, 2019).
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|Subject:||Formations (Geology) > Middle West > Maps.
Aquifers > Middle West > Maps.