The San Ardo, California, earthquake of 24 November 1985
C.M. Poley
1988, Bulletin of the Seismological Society of America (78) 1360-1366
No abstract available....
Aftershock patterns and main shock faulting
C. Mendoza, S.H. Hartzell
1988, Bulletin of the Seismological Society of America (78) 1438-1449
We have compared aftershock patterns following several moderate to large earthquakes with the corresponding distributions of coseismic slip obtained from previous analyses of the recorded strong ground motion and teleseismic waveforms. Well-located aftershock hypocenters are projected onto the main shock fault plane, and their positions are examined relative to the...
Facies composition calculated from the sonic, neutron, and density log suite, upper part of the Minnelusa Formation, Powder River basin, Wyoming
J. W. Schmoker, Christopher J. Schenk
1988, Mountain Geologist (25) 103-112
Sandstones and dolomites of the Permian upper part of the Minnelusa Formation are treated here as four-component systems consisting of fluid-filled pore space, quartz, dolomite, and anhydrite. Response equations of sonic, neutron, and density logs form a system of four simultaneous equations. With four equations and four unknowns, the composition...
Observed oil and gas field size distributions: A consequence of the discovery process and prices of oil and gas
L.J. Drew, E. D. Attanasi, J.H. Schuenemeyer
1988, Mathematical Geology (20) 939-953
If observed oil and gas field size distributions are obtained by random samplings, the fitted distributions should approximate that of the parent population of oil and gas fields. However, empirical evidence strongly suggests that larger fields tend to be discovered earlier in the discovery process than they would be by...
Predicted variation of stress orientation with depth near an active fault: Application to the Cajon Pass Scientific Drillhole, southern California
R. L. Wesson
1988, Geophysical Research Letters (15) 1009-1012
Preliminary measurements of the stress orientation at a depth of 2 km in the Cajon Pass Scientific Drillhole, about 3.6 km from the San Andreas fault in southern California, indicate that the local direction of maximum compression is nearly normal to the fault zone. The measurements...
Geologic characterization of seismic sources: Moving into the 1990s
David P. Schwartz
1988, Conference Paper, Geotechnical Special Publication
The objective of this paper is to discuss leading-edge directions in paleoseismology and seismic geology, particularly as they relate to characterizing seismic sources. The paper builds on earlier articles that discuss some of these trends (Schwartz and Coppersmith, 1986; Schwartz, 1987). There are several areas that appear to be especially...
Late Cenozoic offsets on the offshore connection between the Fairweather and Queen Charlotte faults off southeast Alaska
P.R. Carlson, T.R. Bruns, George Plafker
1988, Marine Geology (85) 89-97
Closely spaced seismic reflection profiles permit us to extend the onshore Fairweather fault across the continental margin off southeast Alaska to the Queen Charlotte fault. Evidence for Quaternary movement along this major plate boundary includes 20–40-m high sea-floor scarps, offset subsurface...
Crustal velocities near Coalinga, California, modeled from a combined earthquake/explosion refraction profile
N. Macgregor-Scott, A. Walter
1988, Bulletin of the Seismological Society of America (78) 1475-1490
Crustal velocity structure for the region near Coalinga, California, has been derived from both earthquake and explosion seismic phase data recorded along a NW-SE seismic-refraction profile on the western flank of the Great Valley east of the Diablo Range. Comparison of the two data sets reveals P-wave phases in common...
Sedimentary biomarker and isotopic indicators of the paleoclimatic history of the Walker Lake basin, western Nevada
P.A. Meyers, L. V. Benson
1988, Organic Geochemistry (13) 807-813
Walker Lake, a terminal saline lake in western Nevada, has experienced major fluctuations in its water level due to changes in the regional climate during Quaternary times. As part of a paleo-climatological study of western Nevada, we have investigated organic matter δ13C and C/N values and lipid biomarker contents of sediments deposited...
Comparison of Instream and Laboratory Methods of Measuring Sediment Oxygen Demand
Dennis C. Hall, Wayne R. Berkas
1988, Water Resources Bulletin (24) 571-575
Sediment oxygen demand (SOD) was determined at three sites in a gravel-bottomed central Missouri stream by: (1) two variations of an instream method, and (2) a laboratory method. SOD generally was greatest by the instream methods, which are considered more accurate, and least by the laboratory method. Disturbing stream sediment...
U.S. Fish & Wildlife Service continues pintail and white-fronted goose telemetry studies in California
M. R. Miller, John Y. Takekawa, J. Fleskes, D. Orthmeyer
1988, California Waterfowl 50
No abstract available at this time...
The influence of diet quality on clutch size and laying pattern in mallards
J.L. Eldridge, Gary L. Krapu
1988, The Auk (105) 102-110
We measured the effect of diet quality on variation in the seasonal pattern of Mallard (Anas platyrhynchos) reproduction. Twenty wild-strain hens, consisting of 10 sibling pairs, were maintained in captivity. One sib of each pair was fed an enriched diet, and the other was fed wheat. The wheat diet resulted...
Ingestion of lead shot and aluminum bands by bald eagles during winter in Nebraska
G.R. Lingle, Gary L. Krapu
1988, The Wilson Bulletin (100) 326-327
Abstract has not been submitted...
High calcium concentration in water increases mortality of salmon and trout eggs
H. G. Ketola, D. Longacre, A. Greulich, L. Phetterplace, R. Lashomb
1988, Progressive Fish-Culturist (50) 129-135
Several experiments were conducted to investigate the effect of water chemistry during water hardening on survival of eggs of Atlantic salmon (Salmo salar), rainbow trout (Salmo gairdneri), and. brook trout (Salvelinus fontinalis). Results of these experiments showed that survival was very low when eggs were exposed to very hard water...
The effect of α-damage on fission-track annealing in zircon
M. Kasuya, C. W. Naeser
1988, International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements (14) 477-480
The thermal stability of confined fission-track lengths in four zircon samples having different spontaneous track densities (i.e. different amounts of ??-damage) has been studied by one hour isochronal annealing experiments. The thermal stability of spontaneous track lengths is independent of initial spontaneous track density. The thermal stability of induced track...
Limestone and chert in tectonic blocks from the Esk Head subterrane, South Island, New Zealand
Norman J. Silberling, K. M. Nichols, J.D. Bradshaw, C.D. Blome
1988, Geological Society of America Bulletin (100) 1213-1223
The Esk Head subterrane is a continuous belt, generally 10-20 km wide, of tectonic mélange and broken formation on the South Island of New Zealand. This subterrane separates older and younger parts of the Torlesse terrane which is an extensive accretionary prism composed mostly of quartzo-feldspathic, submarine-fan deposits ranging from...
Seabeam and seismic reflection imaging of the tectonic regime of the Andean continental margin off Peru (4°S to 10°S)
J. Bourgois, G. Pautot, W. Bandy, T. Boinet, P. Chotin, P. Huchon, B. Mercier de Lepinay, F. Monge, J. Monlau, B. Pelletier, M. Sosson, Roland E. von Huene
1988, Earth and Planetary Science Letters (87) 111-126
Marine geophysical surveys employing Seabeam, multi- and single-channel seismic reflection, gravity and magnetic instruments were conducted at two locations along the continental slope of the Peru Trench during the Seaperc cruise of the R/V “Jean Charcot” in July 1986. These areas are centered around 5°30′S and 9°30′S off the...
Distribution of dissolved-solids concentrations and temperature in ground water of the Gulf Coast aquifer systems, south-central United States
Robert A. Pettijohn, Jonathan S. Weiss, Alex K. Williamson
1988, Water-Resources Investigations Report 88-4082
The distribution of dissolved-solids concentrations and temperature in waters of 10 of the aquifers comprising the gulf coast aquifer systems of the Gulf Mexico Coastal Plain are mapped at a scale of 1:3,500,000. Dissolved solids concentration in the aquifers of the Tertiary System ranges from less than 500 mg/L at...
Areal variation in recharge to and discharge from the Floridan aquifer system in Florida
Walter R. Aucott
1988, Water-Resources Investigations Report 88-4057
This report is a revision and update of existing recharge maps of the Floridan aquifer system to include quantitative information derived from Regional Aquifer Systems Analysis models as well as other recent information and also includes information on discharge from the system. The report represents predevelopment conditions with inset map...
Hydraulic conductivity of a sandy soil at low water content after compaction by various methods
John R. Nimmo, Katherine C. Akstin
1988, Soil Science Society of America Journal (52) 303-310
To investigate the degree to which compaction of a sandy soil influences its unsaturated hydraulic conductivity K, samples of Oakley sand (now in the Delhi series; mixed, thermic, Typic Xeropsamments) were packed to various densities and K was measured by the steady-state centrifuge method. The air-dry, machine packing was followed...
Earthquake warning system for Japan Railways’ bullet train; implications for disaster prevention in California
Y. Nakamura, B. E. Tucker
1988, Earthquakes & Volcanoes (USGS) (20) 140-155
In Japan, the level of public awareness of the dangers of earthquakes is high. The 1923 Kanto earthquake killed about 120,000 people out of a total Japanese population of about 50 million; an equivalent disaster in the U.S would involve 600,000 deaths. Today, Japanese society is well aware of the prediction...
Earthquakes, July-August 1988
W. J. Person
1988, Earthquakes & Volcanoes (USGS) (20) 234-237
Major earthquakes (7.0-7.9) struck the Burma-India border on August 6 and the Solomon Islands on August 10. The most devastating earthquake during this reporting period was a magnitude 6.6 on the Nepal-India border on August 20. In the United States, there were no casualties from earthquakes but moderate earthquakes (5.0-5.9) were...
Salton Sea Scientific Drilling Program
J.H. Sass
1988, Earthquakes & Volcanoes (USGS) (20) 156-160
The Salton Sea Scientific Drilling Program (SSSDP) was the first large-scale drilling project undertaken by the U.S Continental Scientific Drilling Program. The objectives of the SSSDP were (1) to drill a deep well into the Salton Sea Geothermal Field in the Imperial Valley of California, (2) to retrieve a high...
The fir trees have moved
Y. Oki, S. Otaka
1988, Earthquakes & Volcanoes (USGS) (20) 224-225
Trees show a record of the great Kanto earthquake of 1923 in Japan. Two minutes before noon on the morning of September 1, 1923, the Great Kanto earthquake occurred with a magnitude of 7.9 in the northern part of Mizukuma in Sagmi Prefecture, Japan. Fires broke out immediately following the earthquake,...
Historical vignettes of the 1881, 1901, 1922, 1934, and 1966 Parkfield earthquakes
D. Thomason
1988, Earthquakes & Volcanoes (USGS) (20) 52-55