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, below. SEE ALSO: Basic Geologic Features Of Each State EXTERNAL LINKS Geologic Maps of the U.S. from About.com A Tapestry of Time and Terrain: The Union of Two Maps - Geology and Topography (USGS) RELATED IMAGES
	Image:North America Basement Rockspng	"http://wwwinformationdelightinfo/encyclopedia/entry/North_America" class="copylinks">North America n Craton s and basement rocks
	Image:Pleistocene North Ice MapjpgThe Maximum Extent Of	"http://wwwinformationdelightinfo/encyclopedia/entry/ice_age" class="copylinks">Glacial Ice in the north polar area during Pleistocene time
	Image:US Cretaceous GeneraljpgGeneralized Geographic Map Of The	"http://wwwinformationdelightinfo/encyclopedia/entry/United_States" class="copylinks">United States in Late Cretaceous time
	Image:US Pennsylvanian GeneraljpgGeneralized Geographic Map Of The	"http://wwwinformationdelightinfo/encyclopedia/entry/United_States" class="copylinks">United States in Middle Pennsylvanian time

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