Bedrock topography of south-central Iowa
IMAP
763
By: J.W. Cagle
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Abstract
The bedrock surface in Iowa is covered nearly everywhere by unconsolidated deposits of glacial drift and alluvium which range in thickness from less than 1 foot to more than 400 feet, and from less than 1 foot to about 60 feet, respectively. The bedrock surface is the result of a complex system of ancient drainage courses, which were developed during the long period of preglacial erosion and during shorter, but more intense, periods of interglacial erosion.
Suggested Citation
Cagle, J., 1973, Bedrock topography of south-central Iowa: U.S. Geological Survey IMAP 763, 1 map :col. ;83 x 124., https://doi.org/10.3133/i763.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Bedrock topography of south-central Iowa |
| Series title | IMAP |
| Series number | 763 |
| DOI | 10.3133/i763 |
| Year Published | 1973 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Iowa City |
| Contributing office(s) | Iowa Water Science Center |
| Description | 1 map :col. ;83 x 124. |
| Country | United States |
| State | Iowa |
| Scale | 25000 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |