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Bedrock map of Montgomery County, Maryland Bedrock map of Montgomery County, Maryland
No abstract available.
Bedrock topography of northeast Iowa Bedrock topography of northeast Iowa
The bedrock in Iowa (Hershey, 1969) is generally overlain by deposits of glacial drift and alluvium, which range in thickness from less than 1 foot (0.3 m) to more than 400 ft (18 m), respectively. The configuration of the bedrock surface is the result of a complex system of ancient drainage courses when were developed during a long period of preglacial erosion and during shorter, but...
Chromite occurrences in Alaska Chromite occurrences in Alaska
No abstract available.