Eugene Merle Shoemaker, editor(s)
1975, Report
No abstract available....
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Publication Extents
Not all publications have extents, not all extents are completely accurateAllen H. Watkins
1975, Conference Paper, First comprehensive symposium on the practical application of earth resources survey data
With the launch of LANDSAT-1 in July 1972, and the follow-on launch of LANDSAT-2 in January of this year, routine availability of satellite imagery and electronic data of the earth's resources has become a reality. Federal data centers provide LANDSAT data to resource managers and the general public. These data...
D. M. Carneggie, Stephen D. Degloria, R. N. Colwell
1975, Conference Paper, First comprehensive symposium on the practical application of Earth resources survey data
A network of sampling sites throughout the annual grassland region of California was established to correlate plant growth stages and forage production to climatic and other environmental factors. Plant growth and range conditions were further related to geographic location and seasonal variations. A sequence of LANDSAT data was obtained covering...
Paul A. Tessar, Dennis R. Hood, William J. Todd
1975, Conference Paper, Proceedings of the NASA Earth Resources survey symposium
No abstract available....
Marvin A. Lanphere, G. Brent Dalrymple, Robert L. Smith
1975, Geology (3) 339-341
Rhyolite domes and rhyolite and basalt flows near Coso Hot Springs in the Coso Range, California, give K-Ar ages that range from about 0.04 ± 0.02 m.y. to 0.96 ± 0.19 m.y. Most of the units appear to be between 0.05 and 0.15 m.y. old. The total volume of erupted...
D. R. Clark Jr., C.O. Martin, D. M. Swineford
1975, Journal of Mammalogy (56) 429-443
Fifty-nine free-tailed bats (Tadarida brasiliensis mexicana) were collected at Bracken Cave, Texas, and analyzed for organochlorine insecticides and polyehiorinated biphenyls (PCBs). Residues of DDE in the brain were greater in 12 young collected from the floor than in 15 young taken from the ceiling, but food deprivation, not higher residues...
G. P. Eaton, R.L. Christiansen, H. M. Iyer, A.D. Pitt, D. R. Mabey, H. R. Blank Jr., I. Zietz, M. E. Gettings
1975, Science (188) 787-796
The Yellowstone plateau volcanic field is less than 2 million years old, lies in a region of intense tectonic and hydrothermal activity, and probably has the potential for further volcanic activity. The youngest of three volcanic cycles in the field climaxed 600,000 years ago with a voluminous ashflow eruption and...
Alexander F.H. Goetz, Frederic C. Billingsley, A. R Gillespie, M. J. Abrams, R. L. Squires, Eugene Merle Shoemaker, I. Lucchitta, D. P. Elston
1975, Technical Report 32-1597
The purpose of this study was to apply the techniques of computer image processing to ERTS images as an aid to the solution of some regional geologic problems of significant interest.ERTS-1 images were applied to studies in the Shivwits Plateau, Coconino Plateau, and north-central Arizona regions. Unprocessed ERTS images revealed...
B. R. Berger, M.L. Silberman, Randolph A. Koski
1975, Economic Geology (70) 1487-1491
No abstract available....
Maurice A. Chaffee
1975, Economic Geology (70) 995-995
No abstract available....
R. H. Wright, R. H. Campbell, T. H. Nilsen
1975, Geology (3) 217-218
No abstract available....
George J. Neuerburg
1975, Journal of Research of the U.S. Geological Survey (3) 377-378
Some minerals of silicate rocks can be quantitatively recovered from rock fragments by prolonged digestion in cold, concentrated hydrofluoric acid. The procedure yields clean, physically unharmed crystals, mostly of minerals that occur largely or only in trace amounts....
Travis Hudson, Gerald Askevold, George Plafker
1975, Journal of Research of the U.S. Geological Survey (3) 369-375
We have examined several computer systems to see how they could aid information processing of geologic field data. The processing procedure we have chosen combines a systematic note-taking technique, a computer text-editor for creating files of data, and automated printing of selected data or of complete file copies. Traditional text...
Elmer S. Santos
1975, Journal of Research of the U.S. Geological Survey (3) 363-368
A redistribution of radium-226 in uranium ore deposits produces a characteristic pattern of disequilibrium in which uranium is greater than equivalent uranium in high-grade samples and equivalent uranium is greater than uranium in low-grade samples. The redistribution is a continuous process in uranium deposits, and the resulting pattern of disequilibrium...
Robert I. Tilling, Robert Y. Koyanagi, Robin T. Holcomb
1975, Journal of Research of the U.S. Geological Survey (3) 345-361
During August 7-13, 1972, intense and sustained rockfall activity occurred in Makaopuhi Crater on the east-rift zone of Kilauea Volcano. In a 4-day period (August 7-10), approximately 270,000 m3 of rockfall debris accumulated in Makaopuhi's west pit, representing a total kinetic energy release of about 101B ergs. Because the rockfalls...
Bruce Bryant, Terry W. Offield, Paul W. Schmidt
1975, Journal of Research of the U.S. Geological Survey (3) 295-303
Comparison of orientation of faults, foliations, and joints, observed during geologic mapping in Colorado, with thermal, photographic, and topographic linears shows that topographic linears are statistically useful indicators of mappable faults and fractures, photographic linears are less useful, and thermal linears, believed to represent zones of moisture concentration, are parallel...
R. Ernest Anderson, R. L. Laney
1975, Journal of Research of the U.S. Geological Survey (3) 337-343
At Lake Mead, contrasts in permeability of upper Cenozoic sediments show a better correlation with irregularly distributed impoundment-related seismicity than do contrasts in structure. An evaluation of structures developed during the late Cenozoic fails to explain the erratic distribution of seismicity. An evaluation of the late Cenozoic stratigraphy, however, shows...
Donal R. Mullineaux, Jack H. Hyde, Meyer Rubin
1975, Journal of Research of the U.S. Geological Survey (3) 329-335
Pumice layers composing four different groups of tephra beds (termed "sets"), whose stratigraphy, age, and trend away from Mount St. Helens are fairly well known, are potentially valuable stratigraphic markers in the northwestern United States and adjacent parts of Canada. All four tephra sets are less than about 18,000 yr...
Dennis P. Cox, Ileana Perez Gonzalez, J. Thomas Nash
1975, Journal of Research of the U.S. Geological Survey (3) 313-327
The Sapo Alegre prospect, a small porphyry copper-molybdenum occurrence in west-central Puerto Rico, is characterized by distinct zones of alteration and mineralization of quartz diorite porphyry. A biotite-chlorite zone in the porphyry near its contact with surrounding metavolcanic rocks contains copper, molybdenum, gold, silver, selenium, and tellurium. A quartz-sericite-pyrite zone...
J. E. Johnston, R. L. Miller, K. J. Englund
1975, Journal of Research of the U.S. Geological Survey (3) 285-293
Remote sensing is the technology of studying distant objects by measuring and recording energy from one or more segments of the electromagnetic spectrum. Imaging sensors which operate from medium- and high-altitude aircraft or from spacecraft can provide a synoptic view of large areas and of surface phenomena not evident in...
E. J. Young, P. L. Hauff
1975, Journal of Research of the U.S. Geological Survey (3) 305-311
Disseminated uraninite occurs in Wheeler Basin, Grand County, Colo., about 5 mi (8 km) southeast of Monarch Lake, in Precambrian metamorphic rocks consisting of migmatized gneiss and mixed gneiss and pegmatite. An intrusion of Precambrian Y Silver Plume Granite lies within 400 ft (122 m) of the occurrence. The...
Bryan M. Leonard, R.W. Larson
1975, Journal of Glaciology (14) 445-457
The study of ice in the upper Great Lakes, both from the operational and the scientific points of view, is receiving continued attention. Quantitative and qualitative field work is being conducted to provide the needed background for accurate interpretation of remotely sensed data. The data under discussion in this paper...
A. Van Velzen, J.F. Kreitzer
1975, Journal of Wildlife Management (39) 305-309
The LC50 (concentration of toxicant in the diet expected to kill half of the test birds in 5 days) for p,p' -DDT in clapper rails (Rallus longirostris) was found to be 1,612 ppm for males and 1,896 ppm for females. Amounts of DDT + DDD in the brains of...
G.L. Pearson, D.A. Pass, E.C. Beggs
1975, Journal of Wildlife Diseases (11) 224-228
Natural pox infection occurred in a free-living rough-legged hawk (Buteo lagopus) in northeastern North Dakota. Gross, histological and electron microscopic findings were typical of pox infection, and characteristic lesions developed in red-tailed hawks (Buteo jamaicensis) but not in great horned owls (Bubo virginianus) following inoculation with case material. Death of...
P. E. McAllister, R.R. Wagner
1975, Journal of Virology (15) 733-738
Purified infectious hematopoietic necrosis (IHN) virus and the virus of haemorrhagic septicaemia (VHS) (Egtved virus) each contain five structural proteins which were designated L, G, N, M-1, and M-2. The IHN viral polypeptides have molecular weights estimated to be 157,000, 72,000, 40,000, 25,000 and 20,000, respectively, whereas those of VHS...