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Abstract
The bedrock in Iowa (Hershey, 1969) is generally overlain by deposits of glacial drift and alluvium, which range in thickness from less than 1 ft to more than 400 ft, and from less than 1 ft to about 60 ft respectively. The configuration of the bedrock surface is the result of a complex system of ancient drainage courses which were developed during a long period of preglacial erosion and during shorter, but mroe intense, periods of interglacial erosion.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Bedrock topography of north-central Iowa |
| Series title | IMAP |
| Series number | 1080 |
| DOI | 10.3133/i1080 |
| Year Published | 1978 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Iowa Water Science Center |
| Description | 2 Plates: 26.72 x 35.46 inches and 30.65 x 37.98 inches |
| Country | United States |
| State | Iowa |
| County | Cero Gordo, Butler, Floyd, Franklin, Mitchell, Worth |
| Scale | 25000 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |