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GEOLEX

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(Help is available) - (Comprehensive Search also available)

1. Select Geologic Age(s) (Help) (Definitions):
ERA CENOZOIC MESOZOIC PALEOZOIC PRECAMBRIAN
PERIOD
2. Unit Name (Help)
(type "Dakota Sandstone" "Dakota", "Dak", etc.)
4. State(s), Territory(s) or Country(s)
(select none=complete search) (Help)


3. Citation Author (e.g. Smith, J) (Help)
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GEOLEX is a component of the National Geologic Map Database.
The National Geologic Map Database is managed by the USGS National Cooperative Geologic Mapping Program in cooperation with the Association of American State Geologists.
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Last modified: July 22, 2013
URL http://ngmdb.usgs.gov/Geolex/geolex_qs.html

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