Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

165626 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 4475, results 111851 - 111875

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Bedrock topography of central Iowa
R.E. Hansen
1985, IMAP 1609
The bedrock in Iowa (Hershey, 1969) generally is ovelain by deposits of glacial drift and alluvium. The drift, comprised of glacial till and glacial outwash, varies in thickness from less than 1 foot to more than 400 feet; the alluvium in central Iowa varies in thickness from less than 1...
Map showing upper Cenozoic rocks and deposits and Quaternary faults, Rio Grande rift, south-central Colorado
Steven M. Colman, James P. McCalpin, Dean A. Ostenaa, Robert M. Kirkham
1985, IMAP 1594
This map shows the faults and faulted rocks and deposits in the tectonically active part of the Rio Grande rift in Colorado, with particular emphasis on faults and deposits of Quaternary age. The Rio Grande rift in Colorado has been the subject of considerable recent geologic investigation. General compilations of...