The geologic map database in this data release is a reproduction of the U.S. Geological Survey Professional Paper 1762: Volcanic Processes and Geology of Augustine Volcano, Alaska, Waitt and Begét (20
This Web service provides layers containing data from the BGS Geology 625k (DiGMapGB-625) dataset. BGS Geology 625k provides small-scale (1:625 000 scale) bedrock and superficial geology mapping...
Three types of tephra deposits were recovered on Leg 65 of the Deep Sea Drilling Project (DSDP) from three drill sites at the mouth of the Gulf of California: (1) a series of white ash layers at Sites
The Digital Geologic-GIS Map of the Devils Tower National Monument Area, Wyoming is composed of GIS data layers and GIS tables, and is available in the following GRI-...