GIS Data
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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Map showing distribution of ultramafic and intrusive mafic rocks from New York to Maine
No abstract available.
Map showing locations of samples dated by radiocarbon methods in the San Francisco Bay region
Radiocarbon dating is an important interdisciplinary tool for studies involving events and processes during the last 40,000 years of earth history, including studies involving marine transgressions and regressions, land subsidence, climatic changes, sedimentation rates and patterns, fault movements, and archaeology, among others.
The potential value of a radiocarbon date is diminished, however, if
Municipal and industrial wastewater loading in the San Francisco Bay, California, 1970
The purpose of this release is to describe the approximate volumes and significant pollutional loading attributable to municipal and industrial wastewater discharged into the San Francisco Bay. The six receiving-water regions (fig.1) are the same as those used previously by Pearson, Storrs, and Selleck (1969) in describing results of the comprehensive wastewater-monitoring program conducted by the
Preliminary engineering geologic map of the Golden quadrangle, Jefferson County, Colorado
No abstract available.
Preliminary photointerpretation map of landslide and other surficial deposits of the Mount Diablo area, Contra Costa and Alameda Counties, California
The map shows the distribution of landslide and other surficial deposits by presenting the writer's best judgement regarding the origins of the various parts of the present landscape. It is based completely on the interpretation of aerial photographs through a stereoscope, which permits a three-dimentional relief model of the ground surface to be seen, enables the geologist to study and interpret
Reconnaissance geologic map and section of the Nabesna A-3 Quadrangle, Alaska
No abstract available.