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Page 5430, results 135726 - 135750

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The Alaskan Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Tanacross quadrangle, Alaska
Helen Laura Foster, N. R. D. Albert, D.F. Barnes, G.C. Curtin, Andrew Griscom, D.A. Singer, James G. Smith
1976, Circular 734
The Tanacross quadrangle, consisting of 17,400 km 2 (6,700 mi 2) in east-central Alaska, was investigated by an interdisciplinary research team for the purpose of assessing the mineral resource potential of the quadrangle. This report provides the background information for a folio of maps on the geology, geophysics, reconnaissance geochemistry,...
Ground water in the Harrisburg-Halsey area, southern Willamette Valley, Oregon
F. J. Frank
1976, Water Supply Paper 2040
The Harrisburg-Halsey area lies between the Cascade and Coast Ranges in the southern Willamette Valley in northwestern Oregon. The area consists of approximately 350 square miles (910 km2) and includes a part of the lower foothills of the Coast and Cascade Ranges. Volcanic and marine sedimentary units exposed in the...
Flume studies with fine and coarse sands
Carl F. Nordin
1976, Open-File Report 76-762
This report presents a summary of hydraulic and sediment-transport data for two series of laboratory studies in a recirculating flume. Sands with median diameters of 0.25 and 1.1 millimeters were used in the studies. Velocities and depths were controlled, and the slopes, bed configurations and sediment-transport rates adjusted to the...
Stability of highwalls in surface coal mines, western Powder Ridge Basin, Wyoming and Montana
Fitzhugh T. Lee, William K. Smith, William Z. Savage
1976, Open-File Report 76-846
Preliminary results from the first part of a two-part investigation of the stability of highwalls in open-pit coal mines in the Fort Union Formation of the western Powder River Basin of Wyoming and Montana indicate that these highwalls are subject to time-dependent deformation. Field investigations and laboratory physical-properties tests of...
Maps showing mineralogical and geochemical data for heavy-mineral concentrates in the Tanacross quadrangle, Alaska
R. B. Tripp, G.C. Curtin, G.W. Day, R. C. Karlson, S.P. Marsh
1976, Miscellaneous Field Studies Map 767-O
This series of maps showing the following data for heavy mineral concentrates: distribution and abundance of selected ore-related minerals, distribution and abundance of copper in the magnetic fraction, and distribution and abundance of lead, copper, tin, beryllium, tungsten and bismuth in the nonmagnetic fraction. The data are plotted on base...
Geochemical maps showing the distribution and abundance of zinc in the Tanacross Quadrangle, Alaska
G.C. Curtin, G.W. Day, R. M. O’Leary, S.P. Marsh, R. B. Tripp
1976, Miscellaneous Field Studies Map 767-I
This series of geochemical maps shows the distribution of zinc in four sample media: (A) the oxide residue (oxalic-acid-leachable fraction) of the stream sediment, (B) the minus-80-mesh steam sediment, (C) the ash of streambank sod (mixed organic and inorganic material) collected beneath the water level, and (D) the ash of...
Geochemical maps showing the distribution and abundance of tin in the Tanacross Quadrangle, Alaska
G.C. Curtin, G.W. Day, S.P. Marsh, R. M. O’Leary, R. B. Tripp
1976, Miscellaneous Field Studies Map 767-K
This series of geochemical maps shows the distribution of tin in three sample media: (A) the oxide residue (the oxalic-acid-leachable fraction) of the stream sediment, (B) the minus-80-mesh stream sediment, and (C) the ash of aquatic bryophytes (mosses). The geochemical data are plotted on a base map that shows generalized geology...
Geochemical maps showing the distribution and abundance of molybdenum in the Tanacross Quadrangle, Alaska
G.C. Curtin, G.W. Day, R.B. Carten, S.P. Marsh, R. B. Tripp
1976, Miscellaneous Field Studies Map 767-G
This series of geochemical maps shows the distribution of molybdenum in four sample media: (A) the oxide residue (the oxalic-acid-leachable fraction) of the stream sediment, (B) the minus-80-mesh stream sediment, (C) the ash of streambank sod (mixed organic and inorganic material) collected beneath the water level, and (D) the ash of...
Geochemical maps showing the distribution and abundance of lead in the Tanacross Quadrangle, Alaska
G.C. Curtin, G.W. Day, R. M. O’Leary, S.P. Marsh, R. B. Tripp
1976, Miscellaneous Field Studies Map 767-H
This series of geochemical maps shows the distribution of lead in four sample media: (A) the oxide residue (the oxalic-acid-leachable fraction) of the stream sediment, (B) the minus-80-mesh stream sediment, (C) the ash of streambank sod (mixed organic and inorganic material) collected beneath the water level, and (D) the ash...
Geochemical maps showing the distribution and abundance of copper in the Tanacross Quadrangle, Alaska
D.A. Singer, G.C. Curtin, H.L. Foster
1976, Miscellaneous Field Studies Map 767-F
This series of geochemical maps shows the distribution of copper in four sample media: (A) the oxide residue (the oxalic-acid-leachable fraction) of the stream sediment, (B) the minus-80-mesh stream sediment, (C) the ash of streambank sod (mixed organic and inorganic material) collected beneath the water level, and (D) the ash...
Ground-water hydrology of the Cocoa well-field area, Orange County, Florida
C. H. Tibbals, J.M. Frazee
1976, Open-File Report 75-676
The city of Cocoa, Brevard County, Florida, supplies water for much of central Brevard County including Cape Kennedy and Patrick Air Force Base. The water supply is obtained from a well field in east Orange County. Many of the easternmost wells in that well field yield salty water (chloride concentration...