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Collection of digital structure contour maps from previously published USGS s...
Under the direction and funding of the National Cooperative Geologic Mapping Program (NCGMP) with guidance and encouragement from the United States Geological Survey (USGS),... -
Data release for Geologic Map of the Leadville North 7.5' quadrangle, Eagle a...
The Leadville North 7.5' quadrangle lies at the northern end of the Upper Arkansas Valley, where the Continental Divide at Tennessee Pass creates a low drainage divide between...