Preliminary observations on the Campania-Basilicata, Italy, earthquake of November 23, 1980
J. L. Stratta, L. E. Escalente, E.L. Krinitzsky, U. Morelli
1981, Earthquake Information Bulletin (USGS) (13) 18-22
The authors comprised a field study team sent by the Earthquake Engineering Research Institue (EERI) and the National Research Council (NRC) of the United States to make a reconnaissance study of the earthquake in southern Italy. The team members were selected for their experience and expertise and served the EERI...
Charles Darwin and the 1835 earthquake at Concepcion, Chile
H. Spall
1981, Earthquake Information Bulletin (USGS) (13) 13-17
On a stormy night in October 1836, H.M.S Beagle hove to and dropped anchor at Falmouth, a remote harbor in southwest England. Charles Darwin, the ship's naturalist, came ashore to take the mail coach to Shrewsbury. This was inauspicious end to an epic 5-year voyage around the coast of South...
Map showing nature of shallow subsurface sediments and biogeology in the Beeville 1 degree x 2 degrees quadrangle, Texas
H. L. Berryhill Jr., A. R. Trippet
1981, IMAP 1288-C
No abstract available....
The great San Francisco earthquake
R. D. Nason
1981, Earthquake Information Bulletin (USGS) (13) 40-42
Seventy-five years ago on April 18, 1906, the most devastating earthquake in United States history occurred in northern California. This earthquake, which occurred at 5:2 in the morning just as the dawn was breaking, came from rupture of the San Andreas fault from San Juan Bautista (near Hollister) northqard for...
Strain accumulation in southern California, 1973-1980
J.C. Savage, W.H. Prescott, M. Lisowski, N.E. King
1981, Journal of Geophysical Research Solid Earth (86) 6991-7001
Frequent surveys of seven trilateration networks in southern California over the interval 1973–1980 suggest that a regional increment in strain may have occurred in 1978–1979. Prior to 1978 and after late 1979 the strain accumulation has been predominantly a uniaxial north-south compression. This secular trend was interrupted sometime in 1978–1979...
Exsolution of Ca-clinopyroxene from orthopyroxene aided by deformation
S. H. Kirby, M.A. Etheridge
1981, Physics and Chemistry of Minerals (7) 105-109
Monoclinic calcium-poor shear-transformation lamellae and calcium-rich exsolution lamellae occur parallel to (100) in orthopyroxene. The formation of both structures from an orthopyroxene host involves a shear on (100) parallel to [001], with additional cation exchange in the exsolution case. The shear transformation involves a macroscopic simple shear angle of 13.3??...
The distribution of uranium and thorium in granitic rocks of the basin and range province, Western United States
J.M. McNeal, D. E. Lee, Hugh T. Millard Jr.
1981, Journal of Geochemical Exploration (14) 25-40
Some secondary uranium deposits are thought to have formed from uranium derived by the weathering of silicic igneous rocks such as granites, rhyolites, and tuffs. A regional geochemical survey was made to determine the distribution of uranium and thorium in granitic rocks of the Basin and Range province in order...
The status and distribution of ants in the Crater District of Haleakala National Park
Joan H. Fellers, Gary M. Fellers
1981, Technical Report CPSU/UH 40
The Crater District of Haleakala National Park was surveyed for ants. Three species were found. Argentine ants (Iridomyrmex humilis) occurred only within I km of the park headquarters and the nearby research facility. Hypoponera opaciceps was found in small numbers throughout the Crater District. Cardiocondyla emeryi was present only at...
Erosion control techniques used in Redwood National Park, northern California, 1978-1979
W. Weaver, Mary Ann Madej
1981, Publication 132
No abstract available at this time...
Characteristics of central North Dakota wetlands determined from sample aerial photographs and ground study
L.M. Cowardin, D.S. Gilmer, L.M. Mechlin
1981, Wildlife Society Bulletin (9) 280-288
Wetland characteristics were assessed from a systematic sample of 66 plots, 3.22 km2 each, drawn from a 10,041-km2 study area in central North Dakota. Each plot was visited once and 8 sets of aerial photographs were obtained in 3 years. Density of wetland basins was 11.00 ha/km2, and area averaged...
A comparison of populations of desert tortoises, Gopherus agassizii in grazed and ungrazed areas in Ivanpah Valley, California
P.A. Medica, C.L. Lyons, F.B. Turner
1981, Report
No abstract available at this time...
Loss of nitrogenous dissolved organic matter from small lakes
Bruce A. Manny, Akira Otsuki
1981, Journal of Freshwater Ecology (1) 193-202
To determine how much organic nitrogen is lost from lakes during winter by natural processes, we collected water in fall and winter from six small lakes (area, 5-822 hectares) and separated organic matter dissolved in the water with n-butanol into three fractions--yellow organic acids, a white precipitate, and aqueous (nonextractable)...
Geotechnical laboratory test results on piston core samples taken from the mid-Atlantic upper continental slope by the U.S. Geological Survey during September 1979
Harold W. Olsen, James S. Booth, James E. Robb, William S. Gardner, Ram D. Singh, Paul G. Swanson, Paul W. Mayne, R. Gregory Hamadock
1981, Open-File Report 81-366
No abstract available....
Historical evidence for discrete stocks of lake trout (Salvelinus namaycush) in Lake Michigan
Edward H. Brown Jr., G.W. Eck, N.R. Foster, R.M. Horrall, C.E. Coberly
1981, Canadian Journal of Fisheries and Aquatic Sciences (38) 1747-1758
Although few biological data exist on the now extinct native lake trout, Salvelinus namaycush, of Lake Michigan, historical records and interviews with former commercial fishermen strongly suggest that this once widespread resource was composed of a number of discrete spawning populations or stocks. A natural division of the resource into distinct...
Evaluation of coproexamination as a diagnostic test for avian botulism
Wayne I. Jensen
1981, Journal of Wildlife Diseases (17) 171-176
Fecal extracts and blood sera from 113 ducks showing clinical signs of botulism were examined for Clostridium botulinum type C toxin by means of the mouse toxicity test to evaluate coproexamination as a diagnostic procedure, as compared with demonstration of toxin in serum. When death of test mice unprotected with type...
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...
Determination of sub-microgram amounts of selenium in geological materials by atomic-absorption spectrophotometry with electrothermal atomisation after solvent extraction
R. F. Sanzolone, T. T. Chao
1981, The Analyst (106) 647-652
An atomic-absorption spectrophotometric method with electrothermal atomisation has been developed for the determination of selenium in geological materials. The sample is decomposed with a mixture of nitric, perchloric and hydrofluoric acids and heated with hydrochloric acid to reduce selenium to selenium(IV). Selenium is then extracted into toluene from a hydrochloric...
Waterfowl management and waterfowl disease: Independent or cause/effect relationships?
Milton Friend
1981, Transactions of the American Wildlife and Natural Resources Conference (46) 94-103
No abstract available....
Influence of PCBs in water on uptake and elimination of DDT and DDE by lake trout
Robert J. Hesselberg, Lawrence W. Nicholson
1981, Journal of Environmental Quality (10) 315-318
Researchers predicted that several hundred years would be required before DDT (1,1,1 trichloro-2,2-bis [P-chlorophyl] ethane) and its metabolites were likely to decrease to nondetectable levels in Lake Michigan. But following the ban on DDT in 1970, residues of total DDT in Lake Michigan lake trout (Salvelinus namaycush) declined rapidly from...
A long-term resource monitoring plan for the Upper Mississippi River System
G. A. Jackson, C. E. Korschgen, P. A. Thiel, J. Besser
1981, Report
Coregonus prognathus Smith: a nomen dubium
Thomas N. Todd
1981, Copeia (1981) 489-490
No unique phenotypes were observed among the specimens and no single species clearly dominated the samples. I conclude therefore that the species Coregonus prognathus has no taxonomic validity. Because of the poor condition and uncertain identity of the holotype, Coregonus prognathus should be considered a nomen dubium....
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,...
Historical evaluation and management recommendations for beavers at Lassen Volcanic National Park
Gary M. Fellers
1981, Technical Report CPSU/UCD 3
No abstract available at this time...
Earthquakes, March-April 1981
W. J. Person
1981, Earthquake Information Bulletin (USGS) (13) 195-198
There was on major earthquake (7.0-7.9) during this reporting period on April 24 in the Vanuatu Islands (formerly the New Hebrides islands). the series of strong earthquakes continued in Greece and caused additional casualties and damage, and Peru expereinced a moderate earthquake that caused fatalities and damage on April 18. In...
Variations in the correlation of body size with concentrations of Cu and Ag in the bivalve Macoma balthica
Carol R. Strong, Samuel N. Luoma
1981, Canadian Journal of Fisheries and Aquatic Sciences (38) 1059-1064
The relationship between body size and concentrations of Cu and Ag varied from strongly positive to strongly negative in four populations of the bivalve Macoma balthica in San Francisco Bay. The correlations appeared to be influenced by the degree of enrichment in tissues, size-dependent differences and seasonal variations in growth rate, and...
