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Page 6066, results 151626 - 151650

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Water resources data for Montana, water year 1973; Part 2. Water quality records
Water Resources Division, U.S. Geological Survey
1975, Water Data Report MT-73-2
Water resources data for the 1973 water year for Montana include records of data for the chemical and physical characteristics of surface water. Data on the quality of surface water (chemical, temperature, and sediment) were collected from designated sampling sites at predetermined intervals such as once weekly, monthly or less...
Geology and water availability of Cullman County, Alabama
Robert J. Faust, Patrick O. Jefferson
1975, Open-File Report 75-451
The Pottsville Formation of Pennsylvanian age underlies most of Cullaman County in northern Alabama. It consists mostly of interbedded sandstones and shales that dip southward about 40 feet per mile. The Bangor Limestone of Mississippian age underlies the Pottsville and crops out in a few valleys along the northern boundary of...
A mineralogical study of the Guanajuato, Mexico, silver ores
Ivan Franklin Wilson, Charles Milton, Joseph Rollins Houston
1975, Open-File Report 75-70
The silver-gold ores now being worked in the Guanajuato, Mexico, mining district consist chiefly of argentite and native gold-silver, with minor amounts of polybasite, pyrargyrite, and some argyrodite, a silver germanium sulfide. With these are always associated galena, sphalerite, chalcopyrite, pyrite, and minor amounts of marcasite. The gangue is generally...
Origin and significance of natural gases of Montana
Dudley D. Rice
1975, Open-File Report 75-188
About two years ago, I was assigned to a project to evaluate the hydrocarbon potential of the Cretaceous system of the northern Rocky Mountains; namely, in Montana, North Dakota, and South Dakota. I had no problem identifying potential traps; both structural and stratigraphic, but recognized the fact that most of...
Geophysical logs from a geologic test hole near Charleston, South Carolina
Edward C. Rhodehamel
1975, Open-File Report 75-247
On March 2, 1975, the U.S. Geological Survey completed a series of geophysical well logs in the Charleston Project Deep Core Hole No. 1 located at Latitude 32° 53.2 'N and Longitude 80° 21 . 5'W in Dorchester County near Charleston, South Carolina. The land surface is at an elevation...
Hydrology and sedimentation of Bixler Run basin, central Pennsylvania
Lloyd A. Reed
1975, Open-File Report 75-26
Rainfall, streamflow, stream chemical, and sediment discharge data were collected from Bixler Run near Loysville, Pa., during the period February 1954 to September 1969, as part of a project to evaluate sediment discharge from an agricultural area that had been adopting soil-conservation techniques at a moderate rate. The study was...