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Hydrologic data for urban studies in the Houston, Texas, metropolitan area, 1977
James S. Hutchison
1979, Open-File Report 79-1294
Hydrologic investigations of urban watersheds in Texas were begun by the U.S. Geological Survey in 1954. Studies are now in progress in Austin, Dallas and Dallas County, Fort Worth, Houston, and San Antonio.The U.S. Geological Survey, in cooperation with the city of Houston, began studies in the Houston metropolitan area...
Phosphatic Permian rocks of the Adobe Range, Nevada, and their environment of deposition
Keith Brindley Ketner
1979, Open-File Report 79-239
Permian sedimentary rocks in the Adobe range, northern Nevada, are phosphatic, and although the particles of phosphate are relatively more disseminated, they closely resemble the rocks of the Phosphoria Formation. In the northern Adobe Range, where the entire Permian sequence is approximately correlative with the Phosphoria Formation, it is 200...
Geology and phosphate resources of the Hawley Creek area, Lemhi County, Idaho
Peter Oberlindacher, Robert David Hovland
1979, Open-File Report 79-1283
Phosphate resources occur within the Retort Phosphatic Shale Member of the Permian Phosphoria Formation in the Hawley Creek area, near Leadore, in east-central Idaho. About 12 square miles (31 km2 ) of the Retort Member and enclosing rocks were mapped at a scale of 1:12,000 to evaluate the leasable Federal...