Stratigraphy of the Caloris basin, Mercury
J.F. McCauley, J. E. Guest, G. G. Schaber, N.J. Trask, R. Greeley
1981, Icarus (47) 184-202
Caloris basin, Mercury’s youngest large impact basin, is filled by volcanic plains that are spectrally distinct from surrounding material. Post-plains impact craters of a variety of sizes populate the basin interior, and the spectra of the material they have...
Map showing nature of shallow subsurface sediments and biogeology in the Corpus Christi 1 degree x 2 degrees quadrangle, Texas
H. L. Berryhill Jr., A. R. Trippet
1981, IMAP 1287-C
No abstract available....
Toxicity of six bird control chemicals to aquatic organisms
L. L. Marking, J. H. Chandler Jr.
1981, Bulletin of Environmental Contamination and Toxicology (26) 705-716
The U.S. Fish and Wildlife Service (FWS) has supported research on control methods for nuisance birds, mammals, plants, and fish. Although chemical agents have shown great promise, resource managers and regulatory agencies must be assured that these materials are safe to man and the environment. Standardized toxicity tests are conducted...
The seismicity of Ethiopia; active plate tectonics
P. Mohr
1981, Earthquake Information Bulletin (USGS) (13) 124-133
"But I tell you, when you look at the way the pieces of the northeastern portion of the African continent seem to fit together, separated by a narrow gulf, you could almost make a believer [in continental drift] of anybody" Astronaut Harrison Schmidt, on the view from Apollo 17. Ethiopia, descended...
Simulation model of Skeletonema costatum population dynamics in northern San Francisco Bay, California
J. E. Cloern, R. T. Cheng
1981, Estuarine, Coastal and Shelf Science (12) 83-100
A pseudo-two-dimensional model is developed to simulate population dynamics of one dominant phytoplankton species (Skeletonema costatum) in northern San Francisco Bay. The model is formulated around a conceptualization of this estuary as two distinct but coupled subsystems—a deep (10–20 m)...
Microbial formation of ethane in anoxic estuarine sediments
Ronald S. Oremland
1981, Applied and Environmental Microbiology (42) 122-129
Estuarine sediment slurries produced methane and traces of ethane when incubated under hydrogen. Formation of methane occurred over a broad temperature range with an optimum above 65°C. Ethane formation had a temperature optimum at 40°C. Formation of these two gases was inhibited by air, autoclaving, incubation at 4 and 80°C,...
Introduction and summary: Chlorinated hydrocarbons as a factor in the reproduction and survival of lake trout (Salvelinus namaycush) in Lake Michigan
Wayne A. Willford, Roger A. Bergstedt, William H. Berlin, Neal R. Foster, Robert J. Hesselberg, Michael J. Mac, Dora R. May Passino, Robert E. Reinert, Donald V. Rottiers
1981, Book chapter, Chlorinated hydrocarbons as a factor in the reproduction and survival of lake trout (Salvelinus namaycush) in Lake Michigan
Although lake trout (Salvelinus namaycush) were considered extinct in Lake Michigan by the mid 1950's, control of the parasitic sea lamprey (Petromyzon marinus) and extensive restocking resulted in an abundance of hatchery-produced lake trout in the lake by the early 1970's. However, no naturally produced yearling or older lake trout...
Two oil types on North slope of Alaska: Implications for exploration
L. B. Magoon, George E. Claypool
1981, American Association of Petroleum Geologists Bulletin (65) 644-652
Forty oil samples from across the North Slope of Alaska have been analyzed by the U.S. Bureau of Mines and the U.S. Geological Survey. Results of these analyses suggest two separate genetic oil types. The first, the Simpson-Umiat oil type, occurs in reservoir rocks of Cretaceous and Quaternary age and...
Determination of body composition, condition and migration timing of juvenile chum and Chinook salmon in the lower Skagit River, Washington
S.K. Davis
1981, Thesis
No abstract available ...
Aeromagnetic map of east-central United States
T.G. Hildenbrand, R.P. Kucks, R. W. Johnson Jr.
1981, Geophysical Investigations Map 948
U.S. Geological Survey...
Seismology program; California Division of Mines and Geology
R. W. Sherburne
1981, Earthquake Information Bulletin (USGS) (13) 65-68
The year 1980 marked the centennial of the California Division of Mines and Geology (CDMG) and a decade of the Division's involvement in seismology. Factors which contributed to the formation of a Seismology Group within CDMG included increased concerns for environmental and earthquake safety, interest in earthquake prediction, the 1971...
The Georgia Embayment continental shelf: stratigraphy of a submergence.
O. H. Pilkey, B. W. Blackwelder, H.J. Knebel, M.W. Ayers
1981, Geological Society of America Bulletin (92) 52-63
The Holocene-Pleistocene sediment veneer is thin, generally less than 4m thick. Lagoon sediments deposited during the last regression or the Holocene transgression occur in patches on the inner and central shelf. During each transgression or submergence, the surficial sand sheet is recharged with a new biogenic carbonate fraction along with...
Simulative models for the analysis of ground-water flow in Vekol Valley, the Waterman Wash area, and the Bosque area, Maricopa and Pina Counties, Arizona
D. T. Matlock
1981, Open-File Report 82-77
Simulative ground-water flow models for Vekol Valley, the Waterman Wash area, and the Bosque area were developed for use in evaluating alternatives for developing a ground-water supply for the Ak-Chin Indian Community. The hydraulic properties of the basin-fill deposits used in the models were estimated primarily from aquifer tests made...
Geohydrologic reconnaissance of the Crofton Unit, northeastern Nebraska
S.J. Kent, R. A. Engberg, M. J. Ellis
1981, Water-Resources Investigations Report 81-58
This report describes the results of a reconnaissance of the sources, location, quantity, and quality of ground water in the proposed irrigation project area called the "Crofton Unit," an area of approximately 350 square miles in northeastern Nebraska.Precambrian Sioux Quartzite underlies the entire study area. Throughout most of the area,...
Streptococcal infections of fishes
G. L. Bullock
1981, Fish Disease Leaflet 63
No abstract available at this time...
Physiological and immunological differences among three stocks of coho salmon, Oncorhynchus kisutch
Gould D.M.
1981, Thesis
No abstract available ...
Serological comparison of isolates of Aeromonas salmonicida ssp. Salmonicida
G.B. Hahnel
1981, Thesis
No abstract available ...
Effects of chronic exposure to arsenic trioxide on smoltification, downstream migration, and seawater adaptation of coho salmon (Oncorhynchus kisutch)
J.W. Nichols
1981, Thesis
No abstract available ...
Improved population estimates through the use of auxiliary information
Douglas H. Johnson
C.J. Ralph, J. M. Scott, editor(s)
1981, Book chapter, Estimating numbers of terrestrial birds. Cooper Ornithological Society Studies in Avian Biology
When estimating the size of a population of birds, the investigator may have, in addition to an estimator based on a statistical sample, information on one of several auxiliary variables, such as: (1) estimates of the population made on previous occasions, (2) measures of habitat variables associated with the size...
Application of spatial analysis techniques to remotely sensed images on ancillary geocoded data
D. D. Greenlee
1981, Book chapter, Computer mapping of natural resources and the environment, plus satellite derived data applications
No abstract available. ...
Manganese cycles and the origin of manganese nodules, Oneida Lake, New York, U.S.A.
W.E. Dean, W.S. Moore, K.H. Nealson
1981, Chemical Geology (34) 53-64
Oneida Lake is a large shallow lake in central New York that is characterized by high algal productivity and concentrated deposits of freshwater manganese nodules. Budgets for Mn in the lake and its tributaries show a net loss of 23 metric tons of manganese within the lake per year with...
Status of American woodcock in Nebraska with notes on a recent breeding record
G.R. Lingle
1981, Prairie Naturalist (13) 47-51
Abstract has not been submitted...
Stable isotope systematics in mesozoic granites of Central and Northern California and Southwestern Oregon
U. Masi, J. R. O’Neil, R. W. Kistler
1981, Contributions to Mineralogy and Petrology (76) 116-126
18O, D, and H2O+ contents were measured for whole-rock specimens of granitoid rocks from 131 localitics in California and southwestern Oregon. With 41 new determinations in the Klamath Mountains and Sierra Nevada, initial strontium isotope ratios are known for 104 of these samples. Large variations in ??18O (5.5 to 12.4),...
Use of remote sensing for monitoring deforestation in tropical and subtropical latitudes
J. J. Talbot, Lawrence R. Pettinger
1981, Ciencia Interamericana (21) 63-71
Of the three types of remotely sensed data discussed here, Landsat data offers the greatest potential for monitoring broad changes in extensive tropical forest environments because of its low-cost, synoptic, repetitive coverage. Scientists from developing countries can choose from a variety of Landsat data classification techniques, thus enabling each country...
Sedimentary framework of the Potomac River estuary, Maryland
Harley J. Knebel, E. Ann Martin, J.L. Glenn, Sally W. Needell
1981, Geological Society of America Bulletin (92) 578-589
Analyses of seismic-reflection profiles, sediment cores, grab samples, and side-scan sonar records, along with previously collected borehole data, reveal the characteristics, distribution, and geologic history of the shallow strata beneath the Potomac River estuary. The lowermost strata are sediments of the Chesapeake Group (lower Miocene to lower Pleistocene) that crop...
