Geochronology of Tertiary igneous rocks in central Nevada
Edwin H. McKee, Miles L. Silberman
1970, Bulletin of the Geological Society of America (81) 2317-2327
Potassium-argon dating of Tertiary igneous rocks in Lander County, central Nevada, indicates that igneous activity was episodic and can be separated into three periods. Igneous activity started abruptly about 37 m.y. ago with local extrusion of andesitic to quartz-latitic lava flows and intrusion of hypabyssal rocks of similar composition. This...
Treasure Hill reinterpreted
Roscoe M. Smith
1970, Economic Geology (65) 538-540
No abstract available....
Deuterium content of snow cores from Sierra Nevada area
I. Friedman, G.I. Smith
1970, Science (169) 467-470
The relative deuterium content was measured on 37 snow cores collected in April 1969 in the Sierra Nevada. The deuterium content varies inversely with altitude of collection (approximately 40 per mil per 1000 meters) but is unrelated to latitude. The altitude relationship is particularly well defined west of the crest...
Propagation of captive American kestrels
Richard D. Porter, Stanley N. Wiemeyer
1970, Journal of Wildlife Management (34) 594-604
A colony of kestrels (Palco sparverius) was established at the Patuxent Wildlife Research Center in 1964 in connection with work on pesticides. The kestrels were acquired from the wild, both as nestlings and as full-grown birds, and were housed in several rows of outdoor pens. Each 50 x 20 ft...
Summary of regional evidence for right-lateral displacement in the western Great Basin: Reply
John H. Stewart, John P. Albers, Forrest G. Poole
1970, Bulletin of the Geological Society of America (81) 2175-2179
No abstract available....
4 Earthquake: Major offshore earthquakes recall the Aztec myth
United States Department of Commerce
1970, Earthquake Information Bulletin (USGS) (2) 4-7
Long before the sun clears the eastern mountains of April 29, 1970, the savanna highlands of Chiapas tremble from a magnitude 6.7 earthquake centered off the Pacific coast near Mexico’s southern border. Then, for a few hours, he Isthmus of Tehuantepec is quiet....
Boulder Creek batholith, Colorado part I: Allanite and its bearing upon age patterns
Nelson L. Hickling, George Phair, Roosevelt Moore, Harry J. Rose Jr.
1970, Bulletin of the Geological Society of America (81) 1973-1993
Allanite is abundant and commonly attains unusually large size as a late-replacement mineral in: (1) the comagnatic rocks of the Precambrian Boulder Creek batholith; (2) associated amphibolite xenoliths and related hybrid rocks; and (3) distinctly younger intrusions of Silver Plume Granite that cut the complex. Allanite porphyroblasts develop by replacement...
Content of zinc and copper in some fluid inclusions from the Cave-in-Rock district, southern Illinois
Darrell M. Pinckney, Joseph Haffty
1970, Economic Geology (65) 451-458
No abstract available....
A microsporidan (Protozoa: Cnidospora) in channel catfish (Ictalurus punctatus)
R. L. Herman, R.E. Putz
1970, Journal of Wildlife Diseases (6) 173-173
No abstract available. ...
Saline ground-water resources of the Tularosa Basin, New Mexico
J. S. McLean
1970, Research and Development Progress Report 561
This report describes the location, extent, and quality of saline ground water in the Tularosa Basin, a north-trending elongated, intermontane, desert basin in south-central New Mexico. There are no through-flowing streams; runoff from the bordering mountains flows to ephemeral lakes in the center of the basin. Fresh-water supplies in the Tularosa...
An outbreak of fowl cholera in waterfowl on the Chesapeake Bay
L. N. Locke, V. Stotts, G. Wolfhard
1970, Journal of Wildlife Diseases (6) 404-407
An outbreak of fowl cholera (Pasteurella multocida infection) occurred in waterfowl wintering on the Chesapeake Bay during February to March 1970. Losses were primarily confined to sea ducks: oldsquaws (Clangula hyemalis), white-winged scoters (Melanitta deglandi), golden-eyes (Bucephala clangula), and buffleheads (Bucephala albeola)....
California earthquakes: Why only shallow focus?
W.F. Brace, J.D. Byerlee
1970, Science (168) 1573-1575
Frictional sliding on sawcuts and faults in laboratory samples of granite and gabbro is markedly temperature-dependent. At pressures from 1 to 5 kilobars, stick-slip gave way to stable sliding as temperature was increased from 200 to 500 degrees Celsius. Increased temperature with depth could thus cause the abrupt disappearance of...
Identification of polychlorinated biphenyls in two bald eagles by combined gas-liquid chromatography-mass spectrometry
George E. Bagley, W. L. Reichel, E. Cromartie
1970, Journal of the Association of Official Analytical Chemists (53) 251-261
Polychlorinated biphenyls are widely used industrial compounds marketed in the United States under the trade name Aroclor. They have appeared in fish and wildlife tissues in this country and Europe. They are known to be toxic, but more importantly, their presence in samples along with the commonly occurring organochlorine pesticides...
Aspects of oil and gas operations on federal and Indian lands of interest to engineers
Charles J. Curtis
1970, Conference Paper, SPE Rocky Mountain regional meeting
It is always enjoyable to attend any meeting of the Society of Petroleum Engineers. I am happy to have this opportunity to speak to you because I believe that petroleum engineers can benefit from a better understanding of the Mineral Leasing Act and the regulations that implement the act insofar...
Jupiter: His limb darkening and the magnitude of his internal energy source
L.M. Trafton, R.L. Wildey
1970, Science (168) 1214-1215
The most accurate infrared photometric observations (8 to 14 microns) to date of the average limb darkening of Jupiter have been combined with the most refined deduction of jovian model atmospheres in which flux constancy has been closely maintained in the upper regime of radiative equilibrium and a much more...
Late Mesozoic-Cenozoic tectonic aspects of the Atlantic Coastal margin
Thomas G. Gibson
1970, Bulletin of the Geological Society of America (81) 1813-1822
Data from the middle and northern Atlantic Coastal Plain of the United States and continental slope show that the dominant filling of the Atlantic margin geosyncline occurred in pre-latest Cretaceous time with only thin additions of Cenozoic strata. The influx of significant amounts of detrital material into the offshore areas...
Geophysical studies of the Cripple Creek mining district, Colorado
M. Dean Kleinkopf, Donald L. Peterson, Garland B. Gott
1970, Geophysics (35) 490-500
Integrated geophysical, geochemical, and geological interpretations expand the knowledge about the localization of the ore deposits in the Cripple Creek district, Colorado. The principal gold deposits occur in a Tertiary volcanic subsidence basin within Precambrian granite, gneiss, and schist. The basin is filled with volcanic...
Fossiliferous boulders in the Woods Hollow Shale, Marathon region, Texas: Discussion
Philip B. King
1970, Bulletin of the Geological Society of America (81) 1843-1845
No abstract available....
Comparison of chemical hydrogeology of the carbonate peninsulas of Florida and Yucatan
W. Back, B.B. Hanshaw
1970, Journal of Hydrology (10) 330-368
Aquifers of the peninsulas of Florida and northern Yucatan are Tertiary marine carbonate formations showing many lithologic and faunal similarities. In addition, the tropical to subtropical climates of the two areas are similar, each having annual rainfall of about 1000 to 1500 mm.Despite similarities in these fundamental controls, contrasts in...
Metamorphic waters from the Pacific tectonic belt of the west coast of the United States
I. Barnes
1970, Science (168) 973-975
Waters unusually rich in ammonia, boron, carbon dioxide, hydrogen sulfide, and hydrocarbons are found in more than 100 localities along the Pacific coast of the United States. The waters are believed to be products of low-grade metamorphism of marine sediments. The marine sedimentary rocks would have to be tectonically emplaced...
Tektite 1, man-in-the-sea project: Marine Science Program
H.E. Clifton, C.V.W. Mahnken, J. C. Van Derwalker, R.A. Waller
1970, Science (168) 659-663
The Tektite experiment was designed to provide data for a number of behavioral, biomedical, and engineering studies in addition to the marine sciences program. Conditions for some of these studies were not altogether compatible with the program for the marine sciences. For example, isolation imposed by human behavioral studies precluded...
Some hydrologic & biologic aspects of the Big Cypress Swamp drainage area, southern Florida 1970
H. Klein, W.J. Schneider, B. F. McPherson, T.J. Buchanan
1970, Open-File Report FL 70-003
No abstract available....
New evidence for a Pliocene marine embayment along the lower Colorado River area, California and Arizona
Patsy Beckstead Smith
1970, Bulletin of the Geological Society of America (81) 1411-1420
Marine foraminiferal, marine to fresh-water molluscan, and brackish- to fresh-water ostracode faunas occur in a thick section of limestone, silt, and clay of the Bouse Formation along the Colorado River from Parker to Yuma in an area now isolated from the sea. Faunas in the Parker-Blythe-Cibola area are limited in...
Availability of ground water in the Gallup-Tohatchi area, McKinley County, New Mexico
Jerry W. Mercer, James Blair Cooper
1970, Report
No abstract available....
Premetamorphic down-to-basin faulting, folding, and tectonic dewatering, Rangeley area, western Maine
Robert H. Moench
1970, Bulletin of the Geological Society of America (81) 1463-1496
The Rangeley area of western Maine is underlain by a thick sequence of dominantly eugeosynclinal metasedimentary rocks of Ordovician, Silurian, and Devonian age. The dominant structural pattern of these rocks is defined by tight, upright, northeast-trending passive flow folds and by three major normal faults along which younger rocks on...
