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USGS is a primary source of geographic information system (GIS) data. Our data and information is presented in spatial and geographic formats, including The National Map, Earth Explorer, GloVIS, LandsatLook, and much more. Explore GIS Data Maps. 

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Florida-Hatteras shelf and slope, and inner Blake Plateau

During 1976 more than 5000 kilometers (km) of seismic-reflection profiles were obtained on the Florida-Hatteras shelf and slope, and the inner Blake Plateau. From these data reflecting units were traced regionally (Paull and Dillon, 1979; Edsal, 1979), and the structure and stratigraphy of the shelf were determined This geologic subcrop map is based largely on the interpretation of Paull and Dillo

Free-air gravity anomaly map, eastern Gulf of Alaska

No abstract available.

Free-air gravity anomaly map, western Gulf of Alaska

No abstract available.