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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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Geologic map of the Byrgius Quadrangle of the Moon Geologic map of the Byrgius Quadrangle of the Moon

The Byrgius quadrangle, at the western edge of the near side, lies in the terra southwest of Oceanus Procellarum between the Humorum and Orientale basins. Structures and deposits related to the Orientale basin, which is younger than the Humorum basin (Hartmann and Kuiper, 1962), dominate the southwestern half of the quadrangle. The northeastern half is dominated by mantling deposits that...
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