Zoned Cr, Fe-spinel from the La Perouse layered gabbro, Fairweather Range, Alaska
G.K. Czamanske, G. R. Himmelberg, F.E. Goff
1976, Earth and Planetary Science Letters (33) 111-118
Zoned spinel of unusual composition and morphology has been found in massive pyrrhotite-chalcopyrite-pent-landite ore from the La Perouse layered gabbro intrusion in the Fairweather Range, southeastern Alaska. The spinel grains show continuous...
Interactive computer programs for petrologic modeling with extended Q-mode factor analysis
A.T. Miesch
1976, Computers & Geosciences (2) 439-492
An extended form of Q-mode factor analysis may be used if the row-sums of the data matrix are constant and can be helpful especially in developing and testing petrologic-mixing models for igneous systems. The first step is to represent the sample compositions as unit vectors in M-dimensional space and then...
Morphologic interpretation of fertile structures in glossopterid gymnosperms
J. M. Schopf
1976, Review of Palaeobotany and Palynology (21) 25-64
The problem of determining affinity among glossopterid gymnosperms is beset by deficiencies in preservation, natural dissociation of parts, and scarcity of features assuredly critical for morphologic comprarison. The glossopterids probably are not a very heterogeneous group of plants, but this is difficult to prove. The Gondwana glacial "hiatus" has resulted...
Attenuation of pollutants in municipal landfill leachate by passage through clay
R. A. Griffin
1976, Environmental Science & Technology (10) 1262-1268
No abstract available....
Albedo boundaries on Mars in 1972: Results from Mariner 9
R. M. Batson, J.L. Inge
1976, Icarus (27) 531-536
A map of “albedo” boundaries (light and dark markings) on Mars was prepared from Mariner 9 images. After special digital processing, these pictures provide detailed locations of albedo boundaries, which is significant in interpreting recent eolian activity. Derivation of absolute albedo values from the spacecraft data was not attempted. The...
Distribution of small channels on the Martian surface
D. Pieri
1976, Icarus (27) 25-50
The distribution of small channels on Mars has been mapped from Mariner 9 images, at the 1:5 000 000 scale, by the author. The small channels referred to here are small valleys ranging in width from the resolution limit of the Mariner 9 wide-angle images (???1 km) to about 10...
Reduction of mare basalts by sulfur loss
R. Brett
1976, Geochimica et Cosmochimica Acta (40) 997-1004
Metallic Fe content and S abundance are inversely correlated in mare basalts. Either S volatilization from the melt results in reduction of Fe2+ to Fe0 or else high S content decreases Fe0 activity in the melt, thus explaining the correlation. All considerations favor the model that metallic iron in mare basalts is due...
Determination of lead in rocks by radiometric isotope dilution and substoichiometric extraction
Philip Aruscavage
1976, Analytica Chimica Acta (82) 343-348
A rapid procedure is described for the determination of lead in rocks by an isotope-dilution substoichiometric method. After the sample has been digested with acid in the presence of 210Pb tracer, the lead is separated by dithizone extractions. After the lead has been back-extracted into aqueous solution, it is reacted with...
An outbreak of erysipelas in eared grebes (Podiceps nigricollis)
Wayne I. Jensen, Sally E. Cotter
1976, Journal of Wildlife Diseases (12) 583-586
An outbreak of erysipelas killed an estimated 5,000 aquatic birds on Great Salt Lake (Utah) in late November, 1975. Although several thousand ducks and gulls were using the lake, at least 99 percent of the victims were eared grebes. A hypothetical explanation for the selective mortality is offered....
Removal of toxic chemicals from water with activated carbon
V. K. Dawson, L. L. Marking, T.D. Bills
1976, Transactions of the American Fisheries Society (105) 119-123
Activated carbon was effective in removing fish toxicants and anesthetics from water solutions. Its capacity to adsorb 3-trifluoromethyl-4-nitrophenol (TFM), antimycin, NoxfishA? (5% rotenone), Dibrorms, juglone, MSa??222, and benzocaine ranged from 0.1 to 64 mg per gram of carbon. The adsorptive capacity (end point considered as a significant discharge) of...
Chemical and physical characteristics of water in estuaries of Texas, October 1971-September 1973
Karl W. Ratzlaff
1976, Texas Water Development Board Report 208
No abstract available....
Annotated bibliography of Texas water resources reports of the Texas Water Development Board and U.S. Geological Survey through August 1974
C. D. Friebele, H. A. Wolff
1976, Texas Water Development Board Report 199
No abstract available....
Records of wells, drillers' logs, water-level measurements, and chemical analyses of ground water in Harris and Galveston Counties, Texas, 1970-74
W. L. Naftel, Kenneth D. Vaught, Bobbie Fleming
1976, Texas Water Development Board Report 203
No abstract available....
A land use and land cover classification system for use with remote sensor data
James R. Anderson, Ernest E. Hardy, John T. Roach, Richard E. Witmer
1976, Professional Paper 964
The framework of a national land use and land cover classification system is presented for use with remote sensor data. The classification system has been developed to meet the needs of Federal and State agencies for an up-to-date overview of land use and land cover throughout the country on a basis that is uniform...
The February 1969 east rift eruption of Kilauea Volcano, Hawaii
Donald A. Swanson, D. B. Jackson, R. Y. Koyanagi, T. L. Wright
1976, Professional Paper 891
No abstract available....
Movements of desert bighorn sheep in the River Mountains of the Lake Mead National Recreation Area, Project Report #2
David M. Leslie Jr., C. L. Douglas
1976, Technical Report CPSU/UNLV 010/45
No abstract available at this time...
Spring flow from pre-Pennsylvanian rocks in the southwestern part of the Navajo Indian Reservation, Arizona
M. E. Cooley
1976, Professional Paper 521-F
No abstract available....
Antimycin: Uptake, distribution, and elimination in brown bullheads (Ictalurus nebulosus)
D.P. Schultz, P.D. Harman
1976, Journal of the Fisheries Research Board of Canada (33) 1121-1129
Radioactive antimycin was readily taken up in bile and tissues of brown bullheads (Ictalurus nebulosus) exposed to 0.045 μg/ml of 14C-antimycin for as long as 48 h. Bile contained the most and blood the least radioactivity at all sampling periods. The highest concentration of 14C-antimycin in muscle was 0.12 μg/g, after 12 h of exposure. The...
The California poppy (eschscholtzia mexicana) as a copper indicator plant - A new example
M.A. Chaffee, C.W. Gale III
1976, Journal of Geochemical Exploration (5) 59-63
The abundance and distribution of the California poppy (Eschscholtzia mexicana) correlates closely with the copper-rich outcrop of a small porphyry-type deposit in Arizona. Chemical factors are probably more important than physical factors in determining why this species is sometimes found as a copper indicator plant....
Retention of mercury in the muscle of yellow perch (Perca flavescens) and rock bass (Ambloplites rupestris)
Percy W. Laarman, Wayne A. Willford, James R. Olson
1976, Transactions of the American Fisheries Society (105) 296-300
Mercury-contaminated yellow perch (Perca flavescens) and rock bass (Ambloplites rupestris) were collected from Lake St. Clair and stocked in two earthen ponds in September 1970. Twenty-six months later, concentrations of total mercury in the fillets had declined 53% in the yellow perch and 59% in the rock bass; however, the...
Production of hybrid, androgenetic, and gynogenetic grass carp and carp
J.G. Stanley
1976, Transactions of the American Fisheries Society (105) 10-16
Endrin toxicity and distribution in freshwater: A review
B.F. Grant
1976, Bulletin of Environmental Contamination and Toxicology (15) 283-290
No abstract available....
Sodium-potassium dependent adenosine triphosphatase activity in gills and kidneys of Atlantic salmon (Salmo salar)
T.H. McCartney
1976, Comparative Biochemistry and Physiology, Part A: Physiology (53) 351-353
1. Gill and kidney ATPase activities of 2-year-old Atlantic salmon (Salmo salar) were determined periodically from March to July.2. Na-K ATPase activity increased in the gill and declined in the kidney during the time encompassing transformation of parr to smolt under hatchery conditions....
Dissipation of residues of 2,4-D in water, hydrosoil, and fish
D.P. Schultz, E.O. Gangstad
1976, Journal of Aquatic Plant Management (14) 43-45
Abstract has not been submitted...
Hydrologic Unit Map-1974, Colorado
Water Resources Division, U.S. Geological Survey
1976, Hydrologic Unit 6
No abstract available....
