Bedrock topography of southeast Iowa

IMAP 808



The bedrock 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 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 more intesne periods of interglacial erosion. 

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Bedrock topography of southeast Iowa
Series title IMAP
Series number 808
DOI 10.3133/i808
Year Published 1973
Language English
Publisher U.S. Geological Survey
Publisher location Iowa City, IA
Contributing office(s) Iowa Water Science Center
Description 2 Plates: 31.96 x 36.58 inches and 28.23 x 41.80 inches
Country United States
State Iowa
Scale 25000
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details