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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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Aeromagnetic and Gravity Maps of the Central Marysvale Volcanic Field, Southwestern Utah Aeromagnetic and Gravity Maps of the Central Marysvale Volcanic Field, Southwestern Utah

Gravity and aeromagnetic features in the Marysvale volcanic field result from the composite effects of many factors, including rock composition, style of magmatic emplacement, type and intensity of rock alteration, and effects of structural evolution. Densities and magnetic properties measured on a suite of rock samples from the Marysvale volcanic field differ in systematic ways...
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