The Geology of the United States of America reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Geology of the United States of America

The geology of the United States, like most topics of scientific study, is undergoing progressive investigation by numerous public- and private-sector earth scientists, academicians, and students. In that regard, the detailed picture is subject to revision and change as knowledge advances. At present, a very good overview of USA geology can be found at the United States Geological Survey web link:

http://tapestry.usgs.gov/Default.html

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