GIS Data
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Filter Total Items: 9495
Bedrock topography of southwest Iowa
The bedrock in Iowa (Hershey, 1969) is generally overlain by unconsolidataed deposits consisting of glacial drift, alluvium, and loess. Loess deposits are most extensive in areas bordering the Missouri River flood plain, attaining a thickness of over 200ft in some places. The total thickness of the unconsolidated sediments ranges from less than 1 ft to more than 450 ft. The configuration of the un
Coal-quality information from the eastern United States
The United States is attempting to increase domestic coal production in order to reduce dependence upon costly imported petroleum and to stabilize domestic fuel supplies, until alternative sources of energy are developed. In 1975, coal production for the United States amounted to roughly 654 million short tons (593.5 million metric tons) (U.S. Bureau of Mines, 1977, p. 388 and p. 458). A principa
Controlled photomosaic of the Lunae Palus Northeast quadrangle of Mars
No abstract available.
Controlled photomosaic of the Lunae Palus Northwest quadrangle of Mars
No abstract available.
Controlled photomosaic of the Lunae Palus Southeast quadrangle of Mars
No abstract available.
Controlled photomosaic of the Lunae Palus Southwest quadrangle of Mars
No abstract available.
Controlled photomosaic of the Tharsis Northeast Quadrangle of Mars
No abstract available.
Controlled photomosaic of the Tharsis Northwest Quadrangle of Mars
No abstract available.
Controlled photomosaic of the Tharsis Southeast Quadrangle of Mars
No abstract available.
Controlled photomosaic of the Tharsis Southwest quadrangle of Mars
No abstract available.
Controlled photomosaic of the Thaumasia Northeast Quadrangle of Mars
No abstract available.
Controlled photomosaic of the Thaumasia Northwest Quadrangle of Mars
No abstract available.