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Page 5448, results 136176 - 136200

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Not all publications have extents, not all extents are completely accurate
A water-quality assessment of the Burnham Creek Watershed, Polk County, Minnesota
M.R. Have
1975, Open-File Report 75-647
A water-quality assessment of the Burnham Creek watershed, Polk County, Minn., was made in May 1975. Surface waters were calcium magnesium bicarbonate types with 0.11 mg/liter or less of nitrite plus nitrate nitrogen and 0.10 mg/liter or less of total phosphorous. Fecal coliform bacteria concentrations were between 3 and 720...
Some limnological aspects of 20 selected lakes in Eagan and Apple Valley, Minnesota
M.R. Have
1975, Open-File Report 75-528
Selected physical, chemical, and biological parameters were determined to assess the quality of 20 lakes in the cities of Eagan and Apple Valley, Minn. All the lakes are eutrophic except Holland and Fish Lakes, which are mesotrophic. Some lakes (including Fish Lake) have storm sewer inlets but are not discernibly...
Audio-magnetotelluric methods in reconnaissance geothermal exploration
Donald B. Hoover, Carl L. Long
1975, Open-File Report 75-362
About three years ago, at the initiation of a major effort by the U.S. Geological Survey into studies of geothermal systems, a decision was made to evaluate the audio-magnetotelluric, AMT, technique for this application. At that time we had had no real experience with the method nor any equipment. Some...
Ground water in the Grand (Neosho) River basin, Kansas and Oklahoma
Robert B. Morton, Stuart W. Fader
1975, Open-File Report 75-366
Ground water in the Grand (Neosho) River basin occurs in both consolidated rocks and unconsolidated deposits. Water for domestic and stock supplies generally can be obtained from wells in either of the above deposits. Water for municipal, industrial, and irrigation supplies generally can be obtained in limited quantities from the...
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...
Environmental tritium in the Edwards Aquifer, central Texas 1963-71
Frederick Joseph Pearson, Paul L. Rettman, T.A. Wyerman
1975, Open-File Report 74-362
Tritium concentrations of samples from 50 wells and springs in the Edwards aquifer in the San Antonio area of Texas have been analysed. Tritium now in the aquifer is partly natural cosmic ray produced tritium, but most is tritium produced by atmospheric thermonuclear tests in the 1950's and early 1960's....
Streamflow Characteristics of Klawitter Creek Basin near Westfield, Wisconsin
B. K. Holmstrom
1975, Open-File Report 75-527
This report presents low-flow characteristics and mean annual discharge for a site on Klawitter Creek, where an application for diversion of streamflow has been made. This information will be used by the Wisconsin Department of Natural Resources to determine the availability of irrigation water from the stream while maintaining sufficient...
Reconnaissance of the geology and ore mineralization in part of the Chagai District, Pakistan
Raymond H. Nagell
1975, Open-File Report 75-550
The Chagai District of the Quetta Division is in the northwestern part of Pakistan. Igneous activity during the Himalayan orogeny included the extrusion of horizontally layered andesites of the Cretaceous Sinjrani Volcanic Group, emplacement of monzonitic stocks of the Cretaceous Chagai intrusions, and the extrusion of flows and tuffs of the...
Sulfur, fluorspar, magnesite, and aluminous chromite in Pakistan
Raymond H. Nagell
1975, Open-File Report 75-496
Reports and analyses on elemental sulfur, fluorspar, magnesite, and aluminous chromite were reviewed for the purpose of identifying and categorizing the known deposits, and to indicate those which seem to merit further study on the basis of available information. General conclusions drawn from the study are: (1) Although aluminous chromite...
Geology of the Midnite uranium mine, Stevens County, Washington; a preliminary report
J. Thomas Nash, Norman J. Lehrman
1975, Open-File Report 75-402
The Midnite mine is one of only two mines in the United States currently producing uranium from discordant deposits in crystalline host rocks. Ore bodies are in metamorphosed steeply dipping Precambrian pelitic and calcareous rocks of a roof pendant adjacent to a Cretaceous(?) porphyritic quartz monzonite pluton. Production during 14...