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INSET: USGS IMAP 1145: Geologic map of the Phaethontis Quadrangle of Mars

By Planetary Geologic Mapping 1979 (approx.)

Inset of USGS IMAP 1145: Geologic map of the Phaethontis Quadrangle of Mars

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Inset of USGS IMAP 1145: Geologic map of the Phaethontis Quadrangle of Mars

By J. H. Howard III

Map and associated documents available from the USGS Publications Warehouse: https://doi.org/10.3133/i1145

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Public Domain.

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January 1, 1979

Geologic map of the Phaethontis Quadrangle of Mars Geologic map of the Phaethontis Quadrangle of Mars

The Phaethontis quadrangle of Mars is dominated by densely cratered uplands and plateaus which form some of the oldest surfaces on the planet. Extensive low-lying areas within the cratered terrains, including the floors of the large craters, are covered to different degrees by plains-forming material. The youngest plains unit surround Tharsis Montes to the north. Various erosional...

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