Extension and contraction within an evolving divergent strike-slip fault complex: The San Andreas and San Jacinto fault zones at their convergence in southern California
Douglas M. Morton, Jonathan C. Matti
Robert E. Powell, R.J. Weldon II, editor(s)
1993, Book chapter, The San Andreas Fault system: Displacement, palinspastic reconstruction, and geologic evolution
A variety of extensional and contractional structures is produced by strike slip faulting. The variety and extent of the structures are directly related to the kind and extent of geometric complexities of the fault zone or system. The area of convergence of the San Andreas fault zone and the much...
Landfill mapping using multi-disciplinary geophysical techniques at the U.S. Air Force Academy, Colorado Springs, CO
Robert Horton, John W. Busby, Michael H. Powers, Ronald N. Knoshaug
1993, Book, Proceedings of the symposium on the application of geophysics to engineering and environmental problems: SAGEEP '93
This paper describes a multi-disciplinary geophysical survey conducted over a landfill on the U.S. Air Force Academy grounds near Colorado Springs, Colorado. The landfill is known to contain waste generated during the construction of the Academy and reportedly contains buried steel drums. The purpose of the geophysical surveys was to determine the subsurface distribution...
Temporal and spatial variation in habitat characteristics of Tilefish (Lopholatilus Chamaeleonticeps) off the east coast of Florida
Kenneth W. Able, Churchill B. Grimes, Robert Jones, David C. Twichell
1993, Bulletin of Marine Science (53) 1013-1026
The tilefish, Lopholatilus chamaeleonticeps, constructs burrows in carbonate sediments off the central east coast of Florida at similar temperatures (8.6-15.4°C) and in similar sediment textures (high proportion of silts and clays) to conspecifics in the Mid-Atlantic Bight. The depths at which we observed tile fish off Florida (150-290 m), based...
The Pajarito Plateau: A bibliography
Frances Joan Mathien, Charlie R. Steen, Craig D. Allen
1993, NPS Southwest Cultural Resources Center Professional Paper 49
This bibliography is the result of two initially independent projects. As the consulting archaeologist at Los Alamos National Laboratory (LANL), Charlie R. Steen collected entries at the suggestion of the staff of the Environmental Surveillance Group of the Health, Safety, and Environmental Division, HSE-8. The primary purpose was to aid...
A speculative history of the San Andreas fault in the central Transverse Ranges, California
R.J. Weldon II, K. E. Meisling, J. Alexander
Robert E. Powell, Jonathan C. Matti, editor(s)
1993, Book chapter, The San Andreas Fault system: Displacement, palinspastic reconstruction, and geologic evolution
It is generally accepted that the San Andreas fault formed between 4 and 5 Ma and that rocks west of it are now part of the Pacific plate, moving northwest relative to North America at 5 to 6 cm/yr. This model is inconsistent with the geologic record in the central...
Chapter 6: Chronology of displacement on the San Andreas fault in central California: Evidence from reversed positions of exotic rock bodies near Parkfield, California
John D. Sims
Robert E. Powell, R.J. Weldon II, Jonathan C. Matti, editor(s)
1993, Book chapter, The San Andreas Fault system: Displacement, palinspastic reconstruction, and geologic evolution
This chapter presents a synthesis of data pertaining to post-early Miocene slip on the San Andreas fault in central California and suggests a three-phase evolition of the San Andreas system. The cricial evidence that supports the three phases of evolution conies from the reversed positions of two exotic rock fragments...
Constraints in the hot-dry-rock resources of the united states
John Sass, Marianne Guffanti
Anon, editor(s)
1993, Conference Paper, Transactions - Geothermal Resources Council
As with hydrothermal systems, the western U.S has higher HDR potential overall than the eastern U.S. because geothermal gradients on average are higher in the west. Nevertheless, some attractive exploration targets occur in the eastern U.S. The most favorable target in the eastern U.S. (defined here to include the Great...
A guide to continent-ocean transect E-1: Adirondacks to Georges Bank
James B. Thompson Jr., Wallace A. Bothner, Peter Robinson, Yngvar W. Isachsen, Kim D. Klitgord
James B. Thompson Jr., Wallace A. Bothner, Peter Robinson, Kim D. Klitgord, editor(s)
1993, GSA's DNAG Continent-Ocean Transect Series 17
The geologic strip-map for Transect E-l cuts a swath from the Thousand Islands region on the New York-Ontario border to the Atlantic Ocean floor off Georges Bank (see Fig. 1). It includes portions of New York, Ontario and of all of the New England states. The western part, mainly in...
Ground-water withdrawals, water levels, and ground-water quality in the Houston district, Texas, with emphasis on 1985-89
D.L. Barbie, G.L. Locke
1993, Water-Resources Investigations Report 92-4180
This report is one in a series of reports prepared by the U.S. Geological Survey, beginning in 1937, on the ground-water resources in the Houston district. The Houston district includes Harris and Galveston Counties, and parts of Brazoria, Fort Bend, Waller, Montgomery, Liberty, and Chambers Counties. The primary emphasis of...
A detailed taxonomy of Upper Cretaceous and lower Tertiary Crassatellidae in the eastern United States: An example of the nature of extinction at the boundary
G. Lynn Wingard
1993, Professional Paper 1535
Current theories on the causes of extinction at the Cretaceous-Tertiary boundary have been based on previously published data; however, few workers have stopped to ask the question, 'How good is the basic data set?' To test the accuracy of the published record, a quantitative and qualitative analysis of the Crassatellidae...
First collection of rudd, Scardinius erythrophthalmus (Cyprinidae), in the New River, West Virginia
R.S. Easton, D.J. Orth, N.M. Burkhead
1993, Journal of Freshwater Ecology (8) 263-264
We collected the first rudd, Scardinius erythrophthalmus (Cyprinidae), from the New (Kanawha) River drainage, West Virginia. The rudd has now been reported from 12 states (Arkansas, Kansas, Illinois, Massachusetts, Maine, Missouri, New York, Oklahoma, Virginia, Wisconsin, and West Virginia) and several major river systems. The rapid spread of the rudd has apparently...
Patterns of orographic uplift in the Sierra Nevada and their relationship to upper-level atmospheric circulation
Edward Aguado, Daniel R. Cayan, Brian D. Reece, Larry Riddle
1993, Conference Paper, Proceedings of the ninth annual pacific climate (PACLIM) workshop
We examine monthly and seasonal patterns of precipitation across various elevations of the eastern Central Valley of California and the Sierra Nevada. A measure of the strength of the orographic effect called the “precipitation ratio” is calculated, and we separate months into four groups based on being wet or dry...
The Klamath Falls, Oregon, earthquakes on September 20, 1993
S.R. Brantley
1993, Earthquakes & Volcanoes (USGS) (24) 104-146
The strongest earthquake to strike Oregon in more than 50 yrs struck the southern part of the State on September 20, 1993. These shocks, a magnitude 5.9 earthquake at 8:28pm and a magnitude 6.0 earthquake at 10:45pm, were the opening salvo in a swarm of earthquakes that continued for more...
Allogenic and autogenic controls on sedimentation in the central Sumatra basin as an analogue for Pennsylvanian coal-bearing strata in the Appalachian basin
C. Blaine Cecil, Frank T. Dulong, James C. Cobb
1993, GSA Special Papers (286) 3-22
Recent sedimentation patterns in the central Sumatra basin, Republic of Indonesia, may help to explain the cyclic stratigraphy of the Pennsylvanian System of the eastern United States. Modern influx of fluvial siliciclastic sediment to the epeiric seas of the Sunda shelf, including the Strait of Malacca, appears to be highly...
Landslides caused by the Klamath Falls, Oregon, earthquakes of September 20, 1993
D. K. Keefer, R. L. Schuster
1993, Earthquakes & Volcanoes (USGS) (24) 140-146
The Klamath Falls earthquakes caused landslides throughout an area of about 420 sq km and as far as about 29 km from the epicenter, a distribution that is typical for magnitude 6 earthquakes (see graphs on following pages). Most of the landslides were rock falls or shallow, highly disrupted rock...
Paleogeographic implications of molluscan assemblages in the Upper Cretaceous (Campanian) Pigeon Point Formation, California
William P. Elder, LouElla Saul
1993, Book chapter, Mesozoic paleogeography of the Western United States
The Pigeon Point Formation crops out along the San Mateo County coastline in a northern and southern sequence of folded and faulted strata. Correlation of the two sequences remains somewhat equivocal, although on the basis of biostratigraphy and a reversed magnetic interval both appear to have been deposited during the...
Cytonuclear genetic architecture in mosquitofish populations and the possible roles of introgressive hybridization
Kim T. Scribner, John C. Avise
1993, Molecular Ecology (2) 139-149
Spatial genetic structure in populations of mosquitofish (Gambusia) sampled throughout the south-eastern United States was characterized using mitochondrial (mt) DNA and allozyme markers. Both sets of data revealed a pronounced genetic discontinuity (along a broad path extending from south-eastern Mississippi to north-eastern Georgia) that corresponds to a recently recognized distinction...
Earthquakes, May-June 1993
W. J. Person
1993, Earthquakes & Volcanoes (USGS) (24) 147-152
A major earthquake (7.0≤M<8.0) occurred on June 8 during this reporting period. This magnitude 7.3 earthquake was centered off the east coast of Kamchatka. there were no earthquake-related deaths during the months of May and June. Seismicity in the United States included two strong earthquakes in Alaska. The first, a magntidue...
Earthquakes November-December 1993
W. J. Person
1993, Earthquakes & Volcanoes (USGS) (24) 292-294
Two major earthquakes (7.0≤M<8.0) occurred during the last two months of 1993. A magnitude 7.0 earthquake occurred off the coast of Kamchatka in eastern Russia on November 13, and a magntidue 7.0 earthquake shook the Vanuatu Islands in the southwest Pacific Ocean on December 29. The only earthquake-related fatality during...
Earthquakes, September-October 1993
W. J. Person
1993, Earthquakes & Volcanoes (USGS) (24) 235-239
Three major earthquakes (7.0≤M<8.0) occurred during this reporting period. the first, a magnitude 7.2 on September 10, struck near the coast of Chiapas, Mexico. the seocond and third, both with magnitudes of 7.0, shook eastern New Guiena on October 2 and October 25. Earthquake-related deaths were reported in India, Japan,...
Seasonal use of conservation reserve program lands by white-tailed deer in east-central South Dakota
Jeffrey H. Gould, Kurt J. Jenkins
1993, Wildlife Society Bulletin (21) 250-255
The Conservation Reserve Program (CRP_, a provision of the 1985 Food Security Act, subsidizes landowners to take highly erodible lands out of cultivation and seed them to perennial cover for 10years. In eastern South Dakota, 0.5 million ha were enrolled in the CRP from 1985 to 1990 (Agric. Stabilization and...
Radionuclides in ground water of the Carson River Basin, western Nevada and eastern California, U.S.A.
J. M. Thomas, A. H. Welch, M.S. Lico, J. L. Hughes, R. Whitney
1993, Applied Geochemistry (8) 447-471
Ground water is the main source of domestic and public supply in the Carson River Basin. Ground water originates as precipitation primarily in the Sierra Nevada in the western part of Carson and Eagle Valleys, and flows down gradient in the direction of the Carson River through Dayton and Churchill...
Subsurface temperatures and geothermal gradients on the north slope of Alaska
Timothy S. Collett, Kenneth J. Bird, Leslie B. Magoon
1993, Cold Regions Science and Technology (21) 275-293
On the North Slope of Alaska, geothermal gradient data are available from high-resolution, equilibrated well-bore surveys and from estimates based on well-log identification of the base of ice-bearing permafrost. A total of 46 North Slope wells, considered to be in or near thermal equilibrium, have been surveyed with high-resolution temperatures...
Simulation and mapping of soil-water conditions in the Great Plains
R. B. Zelt, J. T. Dugan
1993, Water Resources Bulletin (29) 939-948
Soil-water conditions provide valuable insight into the hydrologic system in an area. A soil-water balance quantitatively summarizes soil-water conditions and is based on climatic, soil, and vegetation characteristics that vary spatially and temporally. Soil-water balances in the Great Plains of the central United States were simulated for 1951-1980. Results of...
Significant bed elevation changes related to Gulf Stream dynamics on the South Carolina continental shelf
G. Gelfenbaum, M. Noble
1993, Continental Shelf Research (13) 385-405
Photographs of the seabed taken from an instrumented bottom tripod located approximately 100 km east of Charleston, South Carolina, reveal bed elevation changes of over 20 cm between July and November 1978. The tripod was in 85 m of water and was equipped with two current meters at 38.7 and...
