Geology and Mineral Resources of the Butler and Zelienople Quadrangles, Pennsylvania (open access)

Geology and Mineral Resources of the Butler and Zelienople Quadrangles, Pennsylvania

From abstract: This report is one of a series of publications on the geology and mineral resources of the Appalachian Plateaus. The areas described are the Butler and Zelienople quadrangles, which together include about 450 square miles in Butler, Beaver, and Lawrence Counties, western Pennsylvania.
Date: 1936
Creator: Richardson, G. B.
System: The UNT Digital Library
Geology of the Monument Valley-Navajo Mountain Region, San Juan County, Utah (open access)

Geology of the Monument Valley-Navajo Mountain Region, San Juan County, Utah

From abstract: The Monument Valley-Navajo Mountain region is part of the Colorado Plateau and includes about 1,100 square miles in San Juan County, southeastern Utah, lying between the San Juan and Colorado Rivers on the north and the Utah-Arizona State line on the south. Included in the region are Navajo Mountain, the Rainbow Natural Bridge, and a part of the picturesque Monument Valley.
Date: 1936
Creator: Baker, Arthur A.
System: The UNT Digital Library
Mineral Deposits of the Ruby-Kuskokwim Region Alaska (open access)

Mineral Deposits of the Ruby-Kuskokwim Region Alaska

From Abstract: "The following report is essentially a description of the mineral deposits that have been found in this region and of the status of mining in 1933."
Date: 1936
Creator: Mertie, John Beaver, Jr.
System: The UNT Digital Library
Geology of the Coastal Plain of South Carolina (open access)

Geology of the Coastal Plain of South Carolina

From abstract: The Coastal Plain of South Carolina extends from the Atlantic Ocean inland a distance ranging from 120 to 150 miles to the Fall Line, where it adjoins the Piedmont province. It includes an area of more than 20,000 square miles, or nearly two-thirds of the State, whose total area is 30,981 square miles, of which 494 square miles is water. The geographic divisions of the Coastal Plain are the marine coastal terraces, or "low country", which stand less than 270 feet above sea level, and the Aiken Plateau, the High Hills of Santee, the Richland red hills, and the Congaree sand hills.
Date: 1936
Creator: Cooke, C. Wythe
System: The UNT Digital Library