Research in seismology and earthquake engineering in Venezuela
L. Urbina, J. Grases
1983, Earthquake Information Bulletin (USGS) (15) 32-38
Venezuela has been affected by destructive earthquakes for the past four centuries. According to entries in the national seismic catalog, there have been about 180 earthquakes which have caused some type of damage to the country. The most catastrophic earthquake occurred on March 26, 1812, on the Bocono fault system...
The magnetic field of the earth, 1980 magnetic inclination
E. B. Fabiano, N.W. Peddie, A.K. Zunde
1983, IMAP 1458
No abstract available....
Publications of the Geological Survey, 1982
1983, Report
This catalog is a list of (1) books and maps that were published during 1982, and (2) articles by Geological Survey personnel in non-Geological Survey journals and books that came to our attention in 1982; it supplements the permanent catalogs "Publications of the Geological Survey, 1879-1961" and "Publications of the...
Evidence for earlier date of Ubeidiya, Israel hominid site (reply)
C.A. Repenning
1983, Nature (304) 375-376
[No abstract available]...
Storm-controlled oblique dunes of the Oregon coast
R. E. Hunter, B. M. Richmond, T. R. Alpha
1983, Geological Society of America Bulletin (94) 1450-1465
The large (mean height 25 m, spacing 300 m), relatively straight-crested dunes of the central Oregon coast migrate an average of 3.8 m/yr toward an azimuth of 26°. The dunes are transverse to the strong, south-southwesterly winter storm winds that are responsible for...
Geochemistry of diverse basalt types from Loihi Seamount, Hawaii: Petrogenetic implications
F.A. Frey, D.A. Clague
1983, Earth and Planetary Science Letters (66) 337-355
The wide variety of basalt types, tholeiitic to basanite, dredged from Loihi Seamount have minor and trace element abundances that are characteristic of subaerial Hawaiian basalts, thereby confirming that Loihi Seamount is a manifestation of the Hawaiian “hot spot”. Within the Loihi sample suite there are well-defined positive correlations among...
DIGITAL CARTOGRAPHY AIDS IN THE SOLUTION OF BOUNDARY DISPUTE.
Francis J. Beck
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The boundary between the States of Ohio and Kentucky and Indiana and Kentucky has been in dispute for many years. A major breakthrough in this continuing dispute has been a recent agreement between the States to accept the boundary line as depicted on U. S. Geological Survey 7. 5-minute quadrangle...
Ultrastructural changes in the hepatocytes of juvenile rainbow trout and mature brown trout exposed to copper or zinc
H.V. Leland
1983, Environmental Toxicology and Chemistry (2) 353-368
Morphological changes in hepatocytes of mature brown trout (Salmo trutta Linnaeus) and juvenile rainbow trout (Salmo gairdneri Richardson), accompanying chronic exposures to copper and zinc, were examined by transmission electron microscopy. At a concentration of copper not inhibitory to the final stages of gonadal development or spawning of brown trout,...
Structure, burial history, and petroleum potential of frontal thrust belt and adjacent foreland, southwest Montana
W. J. Perry Jr., B. R. Wardlaw, N. H. Bostick, E. K. Maughan
1983, American Association of Petroleum Geologists Bulletin (67) 725-743
The frontal thrust belt in the Lima area of southwestern Montana consists of blind (nonsurfacing) thrusts of the Lima thrust system beneath the Lima anticline and the Tendoy thrust sheet to the west. The Tendoy sheet involves Mississippian through Cretaceous rocks of the southwest-plunging nose of the Mesozoic Blacktail-Snowcrest uplift...
Cenozoic structural history of selected areas in the eastern Great Basin, Nevada-Utah
R. Ernest Anderson
1983, Open-File Report 83-504
The Confusion Range structural trough (CRST) of west-central Utah predates the Oligocene rocks that are exposed along it. The northern part of the axial region of the CRST is complicated by structures that include reverse faults and associated folds, a large-amplitude mushroom fold, and belts of sharply flexed to overturned...
Crustal structure of the northern mississippi embayment and a comparison with other continental rift zones
Walter D. Mooney, M.C. Andrews, A. Ginzburg, D.A. Peters, R. M. Hamilton
1983, Tectonophysics (94) 327-348
Previous geological and geophysical investigations have suggested that the Mississippi Embayment is the site of a Late Precambrian continental rift that was reactivated in the Mesozoic. New information on the deep structure of the northern Mississippi Embayment, gained through an extensive seismic refraction survey, supports a rifting hypothesis. The data...
Nontronite from a low-temperature hydrothermal system on the Juan de Fuca Ridge
R. Murnane, D.A. Clague
1983, Earth and Planetary Science Letters (65) 343-352
A deposit of Fe-rich, Al-poor, hydrothermal nontronite was recovered from the Juan de Fuca Ridge. Analyses show the deposit to be mineralogically and chemically similar to nontronite described at other oceanic localities. The deposit is located near the tip of a...
The magnetic field of the earth, 1980 magnetic vertical intensity
E. B. Fabiano, N.W. Peddie, A.K. Zunde
1983, IMAP 1460
No abstract available....
Mapping of hydrothermally altered rocks using airborne multispectral scanner data, Marysvale, Utah, mining district
M. H. Podwysocki, D. B. Segal, O. D. Jones
1983, Advances in Space Research (3) 101-112
Multispectral data covering an area near Marysvale, Utah, collected with the airborne National Aeronautics and Space Administration (NASA) 24-channel Bendix multispectral scanner, were analyzed to detect areas of hydrothermally altered, potentially mineralized rocks. Spectral bands were selected for analysis that approximate those of the Landsat 4 Thematic Mapper and which...
Deep-Sea Drilling Project Leg 90: The South Pacific Cenozoic
J.P. Kennett, C. Von Der Borch, P.A. Baker, C.E. Barton, A. Boersma, W.C. Dudley Jr., J.V. Gardner, D.G. Jenkins, W. Lohman, R. Morin, R. Martini, R. B. Merrill, Campbell S. Nelson, C. Robert, M.S. Srinivasan, R. Stein, A. Takeuchi
1983, Nature (303) 18-19
[No abstract available]...
Methanogenesis of phenolic compounds by a bacterial consortium from a contaminated aquifer in St. Louis Park, Minnesota
E.M. Godsy, D.F. Goerlitz, G. G. Ehrlich
1983, Bulletin of Environmental Contamination and Toxicology (30) 261-268
No abstract available....
Calculation of amorphous silica solubilities at 25° to 300°C and apparent cation hydration numbers in aqueous salt solutions using the concept of effective density of water
Robert O. Fournier, Marshall L. Williams
1983, Geochimica et Cosmochimica Acta (47) 587-596
The solubility of amorphous silica in aqueous salt solutions at 25° to 300°C can be calculated using information on its solubility in pure water and a model in which the activity of water in the salt solution is defined to equal the effective density. pe, of “free” water in that solution....
Sea-floor-mounted rotating side-scan sonar for making time-lapse sonographs
David M. Rubin, David S. McCulloch, Harry R. Hill
1983, Continental Shelf Research (1) 295-301
A rotating side-scan sonar system was designed to make time-lapse sonographs of a circular area of the sea floor. To construct the system, the transducers of a commercial side-scan system (frequency 105 kHz; pulse length 0.1 ms; horizontal beam width 1°; vertical beam width 20°; beam depressed 10° with respect...
National Fisheries Center technology highlights
J. P. McCraren
1983, Salmonid (7) 22-27
Hydrology of area 6, Eastern Coal Province, Maryland, West Virginia and Pennsylvania
W. W. Staubitz, John R. Sobashinski
1983, Open-File Report 83-33
No abstract available....
Zooplankton population structure in three reservoirs near the Ouachita Mountain-Gulf coastal plain interface
Stephen B. Smith, Thomas E. Moen
1983, Arkansas Academy of Science Proceedings (37) 99-100
Abstract has not been submitted...
delta18O variations in the Halimeda of Virgin Islands sands: evidence of cool water in the northeast Caribbean, late Holocene
Charles W. Holmes
1983, Journal of Sedimentary Research (53) 429-438
Halimeda segments from carbonate sands on the Virgin Islands platform have delta 18 O versus PDB isotopic values ranging from -0.3% to -1.3% (x = -0.9%). Modern Halimeda segments from the same area have a measured delta18 O ranging from -2.0% to -2.5% PDB (x = -2.15%), and the carbonate skeleton appears to...
Autotrophic processes in meromictic Big Soda Lake, Nevada.
J. E. Cloern, B.E. Cole, R.S. Oremland
1983, Limnology and Oceanography (28) 1049-1061
Daily rates of oxygenic photosynthesis (OP) by phytoplankton, anoxygenic photosynthesis (AP) by purple sulfur bacteria, and chemoautotrophic productivity (CP = dark CO2 assimilation) were measured once each season. Total daily productivity and the relative importance of each autotrophic process varied with seasonal changes in vertical mixing, light availability, and the...
Evaluation of a heat pump for an aquacultural application
J. T. Fuss
1983, Progressive Fish-Culturist (45) 121-123
No abstract available....
Talc in the suspended matter of the northwestern Atlantic
Lawrence J. Poppe, John C. Hathaway, Carol M. Parmenter
1983, Clays and Clay Minerals (31) 60-64
Knowledge of the distribution, concentration, and composition of suspended particulate matter in seawater is important to the understanding of sedimentation processes on the Continental Shelf. Because the surfaces of both organic and inorganic particles have high affinities for pollutants, such as certain trace metals, chlorinated hydrocarbons, and petroleum (Bothner et...
