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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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Geologic map of the Hellas Quadrangle of Mars Geologic map of the Hellas Quadrangle of Mars

The area of MC-28 is centered on the east edge of the Hellas Planitia (Hellas basin and surrounding plains) within densely cratered terrain that covers more than half the surface of Mars (Carr, 1973, fig. 1). The deepest part of the basin lies 4-5 km below the surface of the cratered terrain (Hanel and others, 1972). An irregular band of mountain and knobby material about the eastern...

Geologic map of the McCarthy Quadrangle, Alaska Geologic map of the McCarthy Quadrangle, Alaska

Diverse Quaternary surficial deposits are abundant in the quadrangle. Quaternary processes of deposition and erosion strongly influenced the landscape, producing many of the scenic and physiographic features.

Geologic map of the Oxia Palus Quadrangle of Mars Geologic map of the Oxia Palus Quadrangle of Mars

The Oxia Palus quadrangle contains three distinct geologic provinces: (1) an elevated cratered plateau that occupies three-fourths of the quadrangle and is similar to much of the southern hemisphere of Mars; (2) the low, relatively featureless Chryse Planitia in the northwest corner; and (3) a complex province of chaotic terrain and immense channels or valleys that divides the plateau...
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