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Page 5928, results 148176 - 148200

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Environmental framework of ground‐water contamination
H. E. LeGrand
1965, Groundwater (3) 11-15
Ramifications of contamination are increasingly involved in the majority of ground‐water problems. The volume of usable ground water is shrinking in many places because of dispersion of contaminated water. Consideration of ground‐water contamination as a multitude of independent problems, separately solvable as each problem arises, is outmoded; wise policies, relating water supply to contamination potential, are needed to alleviate and to forestall problems. Methodology of...
Relation of carbon 14 concentrations to saline water contamination of coastal aquifers
B.B. Hanshaw, W. Back, Meyer Rubin, Robert L. Wait
1965, Water Resources Management (1) 109-114
Naturally occurring stable or radioactive isotopes may be used in some places to identify the origin of saline water that contaminates some coastal aquifers. In a recent study to determine the origin of saline water in the Ocala Limestone aquifer near Brunswick, Georgia, the following sources were analyzed for C14 and...
Trapping starlings
U.S. Bureau of Sport Fisheries and Wildlife
1965, Wildlife Leaflet 467
No abstract available....
The U. S. Geological Survey's gravity program in Washington, Idaho, Montana, and Wyoming
D.P. Hill
1965, Eos, Transactions, American Geophysical Union (46) 214-217
The following summary of the U. S. Geological Survey gravity program in Washington, Idaho, Montana, and Wyoming is one of a series of short papers that outline Geological Survey gravity projects in the western United States. The substance of this summary is a list of references of published papers on U. S. Geological Survey gravity projects in the northwestern states together with an index map (Figure 1) showing the location of the project, the approximate a...
The system arsenic-antimony
B. J. Skinner
1965, Economic Geology (60) 228-239
The one atmosphere isobaric phase relations have been determined for the system As-Sb, using a simple experimental arrangement where a low melting temperature alkali halide melt acts as a reaction vessel. The one atmosphere univariant temperature, where a liquid of composition 45.5 mol % As, plus a solid of composition 62 mol...
Nature and origin of the high-grade hematite ores of Minas Gerais, Brazil
J. V.N. Dorr II
1965, Economic Geology (60) 1-46
The high-grade hematite deposits of Minas Gerais, Brazil, are those averaging more than 66% Fe and less than 1.5% H20+. They occur in the Caue Itabirite, a metamorphosed oxide-facies iron formation of Pre-cambrian age. This formation was intricately folded during an orogeny that metamorphosed pelitic rocks to the greenschist and almandine-amphi-bole fades, accompanied by the formation...
Structural geology of aconcagua province and its relationship to the central Valley Graben, Chile
W. D. Carter, Luis Aguilar
1965, Geological Society of America Bulletin (76) 651-664
Aconcagua Province is herein divided into three major structural provinces which, for the sake of simplicity, are named the Coastal Cordillera, Central Valley graben, and Andean Cordillera structural provinces to correspond to the three geomorphic provinces recognized farther south. The coastal structural province includes the Coastal Cordillera which is underlain mainly by layered sedimentary and effusive rocks that strike north and dip...
Stratigraphy and heavy minerals of the bays formation, Bays Mountain synclinorium, northeast Tennessee
D. Cummings
1965, Geological Society of America Bulletin (76) 591-600
The Bays Mountain synclinorium is in the Valley and Ridge province in northeast Tennessee, southwest of Kingsport and west of Greeneville. The more clastic part of the Bays formation lies in the east section of the synclinorium. The thickness of the Bays decreases from about 870 feet on the east to about 600 feet on the west. Presumably, the red beds and...
Earthquake magnitudes from hydroseismic data
R.C. Vorhis
1965, Groundwater (3) 12-20
If earthquakes are recorded on your water‐level charts, you can make your own estimate of earthquake magnitudes! As an aid in doing this, this paper presents two graphs: one to calculate distance from well to earthquake epicenter; the other, a nomogram from which to read hydroseismic magnitude plus log C. Examples given show (1) direct computation of...
Magnetization of Keweenawan rocks near Duluth, Minnesota
C.E. Jahren
1965, Geophysics (30) 858-874
Remanent magnetization measurements on 200 oriented samples from the Keweenawan gabbro, diabase, and associated rocks in the Duluth area show a clustering of directions west-northwest and downward. Gabbro samples magnetized in this direction usually have Q, the ratio of remanent to induced magnetization, up to five, whereas other gabbro samples have larger Q. Diabase shows no such generalization. Remanent magnetization is...
Mathematical models of catchment behavior
David R. Dawdy, Terence O’Donnell
1965, Journal of the Hydraulics Division (91) 123-137
After an examination of trends in the modeling of hydrologic systems, a review of some recent studies is given. The authors' preliminary studies on the feasibility and efficiency of the automatic evaluation of catchment model parameters by use of a digital computer are described and some results presented....