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January 1, 1979

Geologic map of the Monroe SW Quadrangle, west-central Utah

No abstract available.

January 1, 1979

Geologic map of the Naguabo and part of the Punta Puerca quadrangles, Puerto Rico

No abstract available.

January 1, 1979

Geologic map of the northwest side of the Kodiak and adjacent islands, Alaska

No abstract available.

January 1, 1979

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 processes, inclu

January 1, 1979