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Map Releases

Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. 

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Map showing paleocurrent and clast-size data from the Devonian-Mississippian Endicott Group, northern Alaska Map showing paleocurrent and clast-size data from the Devonian-Mississippian Endicott Group, northern Alaska

The Devonian-Mississippian Endicott Group (Tailleur and others, 1967) is an important geologic unit in the Brooks Range of northern Alaska. It reflects a major tectonic event in the middle and late Paleozoic history of the North American Cordillera. Tailleur and Brosge (1970) interpreted the Endicott as a clastic wedge derived from land to the north during the Late Devonian and from land...

Maps showing drift patterns along the north-central Texas coast, 1973-1974 Maps showing drift patterns along the north-central Texas coast, 1973-1974

An investigation of the rates and directions of drift in the northwestern Gulf of Mexico was initiated in January 1970 as part of a program to study depositional processes and sediment movement off the southern Texas coast. The first phase of that program, a study of coastal drift off south Texas, was reported by Hunter and others (1974). They reported on a three-year program of seasonal...
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