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Page 4907, results 122651 - 122675

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Gold placer and Quaternary stratigraphy of the Jabal Mokhyat area, southern Najd Province, Kingdom of Saudi Arabia
D. L. Schmidt, W.P. Puffett, W. L. Campbell, Z. H. Al-Koulak
1981, Open-File Report 82-414
An ancient gold placer at Jabal Mokhyat (lat 20?12.2'N., long 43?28'E.), about 90 km east of Qalat Bishah in the southern Najd Province, Kingdom of Saudi Arabia, was studied in 1973. Seven hundred and twenty-eight samples in 25 measured sections were collected along trenches and pits 2.5 m in depth...
Hydrology of area 14, Eastern Coal Province, Kentucky
F. Quinones
1981, Open-File Report 81-137
The general hydrology of Area 14, Eastern Coal Province, in Kentucky, is described. The area includes 4,423 square miles in the Kentucky, Licking, and Red River basins. Coal-bearing rocks of Pennsylvanian age underlie most of the area. Coal production in 1978 was about 38 million tons, 65% of which was...
Hydrology of area 18, Eastern Coal Province, Tennessee
V.J. May
1981, Open-File Report 81-492
The Eastern Coal Province is divided into 24 hydrologic reporting areas. This report describes the hydrology of area 18 which is located in the Cumberland River basin in central Tennessee near the southern end of the Province. Hydrologic information and sources are presented as text, tables, maps, and other illustrations...
Hydrology of area 25, Eastern Region, Interior Coal Province, Illinois
E.E. Zuehls, G.L. Ryan, D.B. Peart, K. K. Fitzgerald
1981, Open-File Report 81-636
The eastern region of the Interior Coal Province has been divided into 11 hydrologic study areas. Area 25, located in west-central Illinois, includes the Spoon River and small tributaries to the Illinois River. Pennsylvanian age rocks underlie most of the study area. Illinois, with the largest reserves of bituminous coal,...
Hydrology of area 32, Eastern Region, Interior Coal Province, Indiana
David J. Wangsness, R. L. Miller, Z. C. Bailey, Charles G. Crawford
1981, Open-File Report 81-498
Hydrologic and water-quality information from the coal region in parts of 11 counties in southwestern Indiana are summarized. Pennsylvanian and Mississippian bedrock are overlain by drift and till from the Kansan, Illinoian, and Wisconsinan glaciers that covered two-thirds of the area. Most of the coal is mined from Pennsylvanian coal...
Hydrology of area 4, Eastern Coal Province, Pennsylvania, Ohio, and West Virginia
Donald K. Roth, Morris J. Engelke Jr., and others
1981, Open-File Report 81-343
Area 4 (one of the 24 hydrologic areas defining the Eastern Coal Province) is located at the northern end of the Eastern Coal Province in eastern Ohio, northern West Virginia, and western Pennsylvania. It is part of the upper Ohio River basin, which includes the Beaver, Mahoning, and Shenango Rivers....
Hydrology of Area 7, Eastern Coal Province, Ohio
Morris J. Engelke Jr., D.K. Roth, and others
1981, Open-File Report 81-815
The U.S. Geological Survey established 24 study areas in Eastern Appalachian Coal Province to appraise the hydrology and water resources from Alabama to Pennsylvania. Chemical, physical, biological, and streamflow data were collected from 138 synoptic sites in Area 7, eastern Ohio. The data are evaluated and presented in this report....
Iron sulfide deposits at Wadi Wassat, Kingdom of Saudi Arabia
R. J. Roberts, Darwin L. Rossman, A.Y. Bagdady, C. M. Conway, A. M. Helaby
1981, Open-File Report 82-176
Massive and disseminated iron sulfide deposits in Wadi Wassat form lenticular, stratabound deposits in cherty Precambrian sedimentary rocks interlayered with Precambrian calcareous sedimentary rocks, pyroclastic rocks, and andesitic flow rocks. These rocks have been cut by a wide variety of plutonic and dike rocks including gabbro, diorite, granodiorite, diabase, rhyolite,...
Landsat 3 return beam vidicon response artifacts
EROS Data Center, B. Clark
1981, Open-File Report 82-803
The return beam vidicon (RBV) sensing systems employed aboard Landsats 1, 2, and 3 have all been similar in that they have utilized vidicon tube cameras. These are not mirror-sweep scanning devices such as the multispectral scanner (MSS) sensors that have also been carried aboard the Landsat satellites. The vidicons...