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Bedrock topography of north-central Iowa

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Publication Date

Citation

Bedrock topography of north-central Iowa; 1978; I; 1080; Hansen, R. E.

Summary

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.

Contacts

Author :
R.E. Hansen
Publisher :
U.S. Geological Survey

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Harvested on Wed Aug 31 04:17:16 MDT 2016 from MODS XML Service

Additional Information

Identifiers

Type Scheme Key
local-index unknown i1080
local-pk unknown 66117
series unknown IMAP

Citation Extension

journalIMAP
parts
typePublication Place
valueReston, VA
languageEnglish
citationTypeReport

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