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January 1, 1978

Geologic map of the Soldiers Farewell Hill Quadrangle, Grant County, New Mexico

No abstract available.

January 1, 1978

Geologic map of the southeast quarter of the Cedar Ridge 15-minute Quadrangle, Crook County, Wyoming

No abstract available.

January 1, 1978

Geologic map of the Spring Canyon Quadrangle, Catron County, New Mexico

No abstract available.

January 1, 1978

Geologic map of the Thaumasia Quadrangle of Mars

The Thaumasia quadrangle lies on the south flank of the Tharsis dome (Hord and others, 1974), a large bulge in the crust of Mars extending more than 5,000 km northward from the center of the quadrangle. The major structure imposes a generally southward slope across the entire quadrangle. Topography along the east-central border of the Thaumasia quadrangle exhibits curved scarps and lowlands concen

January 1, 1978