Hydrology of the coal-resource areas in the upper drainages of Huntington and Cottonwood creeks, central Utah
T. W. Danielson, Michael D. ReMillard, Richard H. Fuller
1981, Open-File Report 81-539
The hydrology of coal-resource areas in the upper drainages of Huntington and Cottonwood Creeks in central Utah was studied in order to better define the hydrologic system, to identify the hydrologic effects of underground coal mining, and to devise methods to detect the effects.Discharge records from gaging stations in this...
Principal facts of gravity observations in the Dragoon Mountains Further Planning Area (RARE II) and Gila-San Francisco Wilderness Study Area, Arizona
S.E. Hay, D. P. Klein, F. M. Boler, M. Brickey
1981, Open-File Report 81-849
A potential resource target identified in the Hoover Wilderness and adjoining RARE II study areas, California
Edwin Wilson Tooker, G. F. Brem, M.A. Chaffee, Donald Plouff
1981, Open-File Report 81-788
No abstract available....
Methodology, statistical analysis, and listing of the spectrographic analysis of geochemical samples, Hells Hole Further Planning Area (RARE II), Greenlee County, Arizona, and Grant County, New Mexico
Jerry R. Hassemer, K. C. Watts, C.L. Forn, E. L. Mosier
1981, Open-File Report 81-661
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...
Chemical analyses of samples of rock, minus-0.25-mm stream sediment, and nonmagnetic heavy-mineral concentrate, Mokelumne Wilderness and adjacent RARE II further planning areas, California
Maurice A. Chaffee, E.H. McKee, R. H. Hill, W. S. Speckman, S. J. Sutley
1981, Open-File Report 81-670
No abstract available....
Rare-earth element geochemistry of the island-arc volcanic rocks of Rabaul and Talasea, New Britain
Joseph G. Arth
1981, Geological Society of America Bulletin (92) 858-863
The island-arc volcanic rocks of Rabaul and Talasea, New Britain, range in composition from basalt through rhyolite. Rare-earth elements have been determined by mass-spectrometric isotope dilution in 16 samples. Chondrite-normalized rare-earth element patterns are distinct for each volcanic center, but all are relatively flat (Ce/YbE.F. = 1.1 to 3.0). Within...
Origin of organic-carbon-rich mid-Cretaceous limestones, Mid-Pacific Mountains and southern Hess Rise
Walter E. Dean, George E. Claypool, Jorn Thiede
1981, Initial reports of the Deep Sea Drilling Project (62) 877-890
Limestones of mid-Cretaceous age containing as much as 8.6 percent organic carbon were cored at one site (463) in the Mid-Pacific Mountains and at two sites (465, 466) on southern Hess Rise, central North Pacific Ocean, during Leg 62 of the Deep Sea Drilling Project. In the Mid-Pacific Mountains, three...
Late Cenzoic rhyolites from the Kern Plateau, southern Sierra Nevada, California.
C. R. Bacon, W. A. Duffield
1981, American Journal of Science (281) 1-34
Four late Cenozoic rhyolite domes lie atop the Kern Plateau, 30 to 40km S-SE of Mount Whitney. K-Ar and 40Ar/39Ar dating shows that Monache, Templeton, and Little Templeton Mountains are all about 2.4Ma old; a small dome nearby is approx 0.2Ma old. The three older rhyolites have SiO2 = 73-74%...
Minor and trace element geochemistry of volcanic rocks dredged from the Galapagos spreading center: Role of crystal fractionation and mantle heterogeneity
D.A. Clague, F.A. Frey, G. Thompson, S. Rindge
1981, Journal of Geophysical Research Solid Earth (86) 9469-9482
A wide range of rock types (abyssal tholeiite, Fe-Ti-rich basalt, andesite, and rhyodacite) were dredged from near 95°W and 85°W on the Galapagos spreading center. Computer modeling of major element compositions has shown that these rocks could be derived from common parental magmas by successive degrees of fractional crystallization. However,...
Sm-Nd systematics of a tonalitic augen gneiss and its constituent minerals from northern Michigan
K. Futa
1981, Geochimica et Cosmochimica Acta (45) 1245-1249
The Sm-Nd isotopic system of a tonalitic augen gneiss and its constituent minerals from northern Michigan was disturbed during metamorphism. Sm-Nd zircon ages are lower than the wholerock Sm-Nd model age. However, closely associated pairs of minerals (for example, sphene and biotite or apatite and plagioclase) retain their apparent metamorphic...
Allelic variability in species and stocks of Lake Superior ciscoes (Coregoninae)
Thomas N. Todd
1981, Canadian Journal of Fisheries and Aquatic Sciences (38) 1808-1813
Starch gel electrophoresis was used as a means of recognizing species and stocks in Lake Superior Coregonus. Allelic variability at isocitrate dehydrogenase and glycerol-3-phosphate dehydrogenase loci was recorded for samples of lake herring (Coregonus artedii), bloater (C. hoyi), kiyi (C. kiyi), and shortjaw cisco (C. zenithicus) from five Lake Superior...
Measurement and computation of bed-material discharge in a shallow sand-bed stream, Muddy Creek, Wyoming
E.D. Andrews
1981, Water Resources Research (17) 131-141
Both the measurement and computation of the bed-material discharge of a stream involve large uncertainties because of the difficulties in determining bedload discharge. Measurements of bedload discharge are rare and frequently of unknown accuracy because no bedload sampler has been extensively tested and calibrated over a wide range of hydraulic...
Clay mineralogy of weathering profiles from the Carolina Piedmont.
P. J. Loferski
1981, Southeastern Geology (22) 193-202
Saprolite profiles (12) that formed over various crystalline rocks from the Charlotte 1o X 2o quadrangle showed overall similarity in their clay mineralogy to depths of 6 to 45 m indicating control by weathering processes rather than by rock type. Most saprolite contained 10-25% clay, and ranged 3 to 70%....
Jasperoid float and stream cobbles as tools in geochemical exploration for hydrothermal ore deposits
T.G. Lovering
1981, Journal of Geochemical Exploration (14) 69-81
Fragments of silicified rocks that are associated with deposits of base and precious metals may be transported as cobbles and pebbles in alluvium far downstream from the source outcrop. These rocks commonly exhibit certain characteristics which distinguish them from other detrital siliceous material, and may thus serve as a useful...
The origin of the Cerro Prieto geothermal brine
A.H. Truesdell, J. M. Thompson, T.B. Coplen, N.L. Nehring, C. J. Janik
1981, Geothermics (10) 225-238
The Cerro Prieto geothermal brine may have originated from mixing of Colorado River water with seawater evaporated to about six times its normal salinity. This mixture circulated deeply and was heated by magmatic processes. During deep circulation, Li, K, Ca, B, SiO2 and rare alkalis were transferred from rock minerals to...
Petrogenesis of garnet two-mica granites in the Ruby Mountains, Nevada
R. W. Kistler, E. D. Ghent, J. R. O’Neil
1981, Journal of Geophysical Research Solid Earth (86) 10591-10606
Garnet-two-mica granites of Jurassic (160 ± 3 m.y.) and Cretaceous (83 ± 1.3 m.y.) ages intrude amphibolite facies metasedimentary rocks of Precambrian age and lower Paleozoic sedimentary rocks in the northern part of the Ruby Mountains, Nevada. High initial 87Sr/86Sr and high values of δ18O for minerals suggest a dominantly sedimentary...
Trace elemental analysis of bituminuos coals using the Heidelberg proton microprobe
J.R. Chen, H. Kneis, B. Martin, R. Nobiling, K. Traxel, E. C. T. Chao, J.A. Minkin
1981, Nuclear Instruments and Methods (181) 151-157
Trace elements in coal can occur as components of either the organic constituents (macerals) or the inorganic constituents (minerals). Studies of the concentrations and distribution of the trace elements are vital to understanding the geochemical millieu in which the coal was formed and in evaluating the attempts to recover rare...
Observations of wing-feather molt and summer feeding ecology of Steller's Eiders at Nelson Lagoon, Alaska
Margaret R. Petersen
1980, Wildfowl (31) 99-106
The population size, moult chronology, food habits, and feeding behaviour of Steller's Eiders Polysticta stelleri were studied at Nelson Lagoon, Alaska from May to October 1977. Sub-adults were flightless from late July to late August and the adult males were flightless from late August to mid September. Adult females were...
Analysis of the heavy-mineral fraction of drainage sediments, Domeland Wilderness and adjacent RARE II study areas, Kern and Tulare counties, California
J. M. Motooka, John B. McHugh, W. R. Miller
1980, Open-File Report 80-918
Interpretation of an aerial radiometric and magnetic survey of the Salmo-Priest study area (RARE E6-981 A1-981), Pend Oreille County, Washington and Boundary County, Idaho
James A. Pitkin, Joseph S. Duval
1980, Miscellaneous Field Studies Map 1192-B
An aerial radiometric and magnetic survey of the Salmo-Priest study area (RARE E6-981) (index map) was made by the U.S. Geological Survey during October, 1978. Geophysical data from the survey will be used in the assessment of the mineral-resource potential of the study area. The Salmo-Priest area is located in...
Reconnaissance geochemical map of the Big Snowies Wilderness and contiguous RARE II study areas, Fergus, Golden Valley, and Wheatland Counties, Montana
David A. Lindsey, D.M. Hopkins, E. L. Mosier, J.C. Antweiler
1980, Miscellaneous Field Studies Map 1243-D
No abstract availabe. ...
Uranium, rare-earth and thorium mineralization at the Hope Mine, eastern Bristol Mountains, San Bernardino County, California
James K. Otton, Richard K. Glanzman, Elizabeth F. Brenner-Tourtelot
1980, Open-File Report 80-821
Mineral resource potential of the Pine Creek (RARE II) area, Oregon
George Walton Walker
1980, Open-File Report 80-989
Maps showing geology and geochemical sample localities, Pine Creek (RARE II) area, Harney County, Oregon
G. W. Walker
1980, Miscellaneous Field Studies Map 1237
