GIS Data
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Filter Total Items: 9493
Maps showing Quaternary geology of the northern Maryland part of the Chesapeake Bay
No abstract available.
Maps showing Quaternary geology of the northern Virginia part of the Chesapeake Bay
No abstract available.
Maps showing Quaternary geology of the southern Maryland part of the Chesapeake Bay
No abstract available.
Maps showing trace-element geochemistry of the Sangre de Cristo Wilderness Study Area, south-central Colorado
A trace-element geochemical study of the Sangre de Cristo Wilderness Study Area included the collection of 710 heavy-mineral-concentrate samples, 767 minus-80 mesh stream-sediment samples, and 145 rock samples. All samples were analyzed for 31 elements by semiquantitative emission-spectrographic methods, and some stream-sediment and rock samples were also analyzed for selected elements by wet che