Jeffrey A. Spendelow
1983, Connecticut Warbler (3) 52-52
No abstract available...
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Page 4753, results 118801 - 118825
Publication Extents
Not all publications have extents, not all extents are completely accurateJ. A. Jannis
1983, Report
No abstract available....
Clifford A. Kaye
1983, American Journal of Science (283) 1060-1079
As deduced from various data the Triassic-Jurassic Middleton basin-trends NE and is probably approx 5.7km in length and no >0.5km in width. Two sets of dikes which have been K/Ar dated as Late Triassic-Early Jurassic have the same NNE strikes as strike-slip faults. There are indications that a tectonic event...
Laurel M. Bybell, Richard Z. Poore
1983, Gulf Coast Association of Geological Societies Transactions (33) 253-256
The Eocene-Oligocene boundary in Mississippi and Alabama has been traditionally placed between the Shubuta Member of the Yazoo Formation and the overlying Red Bluff Formation (or its carbonate facies equivalent, the Bumpnose Formation). Consequently, the presence of Eocene planktonic foraminifers in the Red Bluff and Bumpnose has long been attributed...
Robert J. Rosenbauer, James L. Bischoff
1983, Book chapter, Hydrothermal processes at seafloor spreading centers
In general, the chemistry of seawater experimentally reacted with basalt is in accord with the observed chemistry of the 350°C vent waters from 21°N on the East Pacific Rise. Experiments at 350°C, 500 bar, and a water/rock ratio of ≤10 reproduce most of the major components in the vent waters,...
Frank T. Manheim, T.H. Ling, C.M. Lane
1983, Conference Paper, Proceedings of Oceans 1983
A new database for ferromanganese crusts from the world oceans is being compiled by the U.S. Geological Survey. Crusts differ from abyssal nodules by forming principally on steeper, raised areas or current-swept plateaus in the oceans. Some crusts contain relatively large concentrations of cobalt (1.0%) in areas within national territorial...
Jeffrey A. Spendelow
1983, Connecticut Warbler (3) 28-30
No abstract available...
C. W. Naeser, B. Bryant, M. D. Crittenden Jr., M. L. Sorensen
1983, Memoir of the Geological Society of America (157) 29-36
Apatite fission-track ages from basement rocks in the Wasatch Mountains between Ogden and Bountiful, Utah, range from 5 m.y. near the Wasatch fault along the west margin of the mountains to 94 m.y. on the crest of the range and show a correlation with altitude within individual fault blocks. Analysis...
M. D. Crittenden Jr., N Christie-Blick, Paul K. Link
1983, Geological Society of America Bulletin (94) 437-450
A record of glaciation during late Proterozoic time is preserved in a number of localities extending from the Sheeprock Mountains, Utah, to Pocatello, Idaho, and from the Park City area 40 km east of Salt Lake City to the Deep Creek Range along the Utah-Nevada line. Over much of this...
D. M. Miller, Keith A. Howard
D. M. Miller (compiler), V. R. Todd, K. A. Howard, editor(s)
1983, GSA Memoirs 1-2
Tectonic and Stratigraphic Studies in the Eastern Great Basin is compiled as a tribute to Max D. Crittenden, Jr., whose geologic leadership and exemplary studies in the eastern Great Basin region have stimulated significant scientific advances. Many of the authors in this volume conducted their studies with assistance from Max,...
Paul Stone, Keith A. Howard, Warren Hamilton
1983, GSA Bulletin (94) 1135-1147
Isolated outcrops of deformed, regionally metamorphosed Paleozoic strata are scattered within the southeastern Mojave Desert region of California and western Arizona. These strata unconformably overlie a basement of Proterozoic crystalline rocks and are overlain in turn by metamorphosed Mesozoic sedimentary rocks. The strata can be correlated lithostratigraphically with the classic...
William P. Irwin, Bruce R. Wardlaw, T.A. Kaplan
1983, Journal of Paleontology (57) 1030-1039
Conodonts were extracted from 32 samples of limestone and 5 samples of chert obtained from the Western Paleozoic and Triassic belt of the Klamath Mountains province. Triassic conodonts were found in 17 samples, and late Paleozoic conodonts in 7 samples. Conodonts of the remaining 13 samples cannot be dated more...
C.J. Ando, W. P. Irwin, D. L. Jones, J.B. Saleeby
1983, GSA Bulletin (94) 236-252
The North Fork terrane is an assemblage of ophiolitic and other oceanic volcanic and sedimentary rocks that has been internally imbricated and folded. The ophiolitic rocks form a north-trending belt through the central part of the region and consist of a disrupted sequence of homogeneous gabbro, diabase, massive to pillowed...
E. E. Brabb, Kristen McDougall, R.Z. Poore
1983, Journal of Foraminiferal Research (13) 167-178
During the 1930's and early 1940's, controversy about the age of Lepidocyclina californica and faunas associated with it led to unreconcilable differences of opinion in the attempt to provide a standard stratigraphic framework for Cenozoic rocks of western North America. Two standards with significantly different series age assignments were provided,...
U.S. Geological Survey Saudi Arabia Mission, Saudi Arabia. Deputy Ministry for Mineral Resources
1983, Report
Geological map of Shaqra', Saudi Arabia with geological legend and explanation....
U.S. Geological Survey Saudi Arabia Mission, Saudi Arabia. Deputy Ministry for Mineral Resources
1983, Report
Geological map of Ar Riyad, Saudi Arabia with geological legend and explanation....
Mark E. Gettings, Gordon E. Andreasen
1983, Report
A gravity survey of the Jiddah area between lat 21°23' and 21°48' N., long 39°03' and 39°20' E., carried out in early 1977, covers an area of 744 km2 and includes 215 stations, at an average spacing of 1.9 km. The resulting simple Bouguer gravity anomaly map shows a series...
J.M. Cleveland, T.F. Rees, K.L. Nash
1983, Science (222) 1323-1325
The solubility of plutonium in Mono Lake water is enhanced by the presence of large concentrations of indigenous carbonate ions and moderate concentrations of fluoride ions. In spite of the complex chemical composition of this water, only a few ions govern the behavior of plutonium, as demonstrated by the fact...
James E. Fassett
1983, Geology (11) 736-737
No abstract available. ...
N.E. King, James C. Savage
1983, Geophysical Research Letters (10) 55-57
A profile of the strain accumulation rate along a line trending N50°E across the subparallel Elsinore, San Jacinto, and San Andreas faults near Palm Springs, California, has been constructed from trilateration surveys in the 1973‐81 interval. The strain accumulation is principally right‐lateral shear across a vertical plane parallel to fault...
James C. Savage, W.H. Prescott
1983, Journal of Geophysical Research B: Solid Earth (88) 10478-10484
Jackson and Cheng have suggested that the changes in areal dilatation measured in Geodolite surveys by the U.S. Geological Survey may be simply an artifact of the measuring system. Although systematic error could conceivably account for the observed excursions in dilatation, we maintain that the specific criticisms by Jackson and...
James C. Savage
1983, Annual Review of Earth and Planetary Sciences (11) 11-43
This review is principally concerned with recent geodetic strain measurements in western United States undertaken by the US Geological Survey as part of the earthquake studies program and, as a consequence, is heavily biased toward the author's own publications. Most of the publications reporting crustal-strain measurements in western United States...
James C. Savage
1983, Journal of Geophysical Research B: Solid Earth (88) 4984-4996
Strain accumulation and release at a subduction zone are attributed to stick slip on the main thrust zone and steady aseismic slip on the remainder of the plate interface. This process can be described as a superposition of steady state subduction and a repetitive cycle of slip on the main...
H.L. Snell, Thomas H. Fritts
1983, Biotropica (15) 285-291
The diurnal, nonreproductive emergence of green turtles Chelonia mydas in Galapagos apparently occurs throughout the year on several islands. Turtles on beaches have cloacal temperatures that exceed temperatures of adjacent coastal waters. Basking turtles are predominately females. We hypothesize that females bask to accelerate digestion and fat build-up, necessary antecedents...
R.V. Fodor, E.H. McKee, H.E. Asmus
1983, Marine Geology (54) M1-M8
New K-Ar ages for 13 samples of basalt, gabbro, wehrlite, and trachyandesite drilled from the Brazilian continental shelf and coastline yield information about the timing of the opening of the South Atlantic and the nature of the crust seaward from the Brazil...