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A Tapestry of Time and Terrain:
The Union of Two Maps - Geology and Topography
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North Dakota

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geology of north dakota\

State's rock-ages colored below
quaternary permian cambrian and ordovician spacer
upper tertiary spacer
lower tertiary precambrian spacer
carboniferous spacer
cretaceous spacer
silurian and devonian metamorphic- ages uncertain spacer
triassic and jurassic spacer

 
For more information, please visit:
North Dakota Geological Survey
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U.S. Department of the Interior
U.S. Geological Survey
Contact: Administrator
Last Modification: 18 Oct 2000 (ebj)
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