Seismic refraction study of crustal structure in the western United States
Claus Prodehl
1970, Bulletin of the Geological Society of America (81) 2629-2645
A network of 64 seismic-refraction profiles recorded by the U.S. Geological Survey in California and Nevada and adjacent areas of Idaho, Wyoming, Utah, and Arizona from 1961 to 1963 was re-interpreted. From record sections compiled for all profiles, a basic travel-time diagram can be derived. In addition to the first...
The Uralides and the motion of the Russian and Siberian Platforms
Warren B. Hamilton
1970, Bulletin of the Geological Society of America (81) 2553-2576
The Uralides—the late Precambrian and Paleozoic orogenic terrane between the Russian and Siberian Platforms—in part are exposed in the Ural Mountains, in the central Soviet Arctic, along the west edge of the Siberian Platform, and in southern Siberia and Kazakhstan, and in part are buried beneath the fill of the...
Radiometric ages and stratigraphic sequence of volcanic and plutonic rocks, southern Nye and western Lincoln Counties, Nevada
Richard F. Marvin, F.M. Byers Jr., Harald H. Mehnert, Paul P. Orkild, T. W. Stern
1970, Bulletin of the Geological Society of America (81) 2657-2676
The geochronology of Tertiary igneous events at the Nevada Test Site and adjacent area is outlined by 36 recently determined K-Ar ages, together with other published K-Ar ages. The first evidence of Tertiary igneous activity is the ash-fall bedded tuffs in the Horse Spring Formation. One such tuff has been...
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...
Origin of the disturbed belt in northwestern Montana
Melville R. Mudge
1970, Article
The northern part of the disturbed belt in Montana is a northwesterly trending zone of closely spaced westerly dipping thrust faults, many folds, and some longitudinal normal faults and transverse faults. The theory of vertical uplift that results in gravitational gliding is a reasonable explanation of the origin of the...
Emission spectrographic determination of trace elements in lunar samples
C. Annell, A. Helz
1970, Science (167) 521-523
Eighteen minor or trace elements were detected and determined by emission spectroscopy. Direct d-c arc excitation of powdered samples was used with three variations in the procedure. Thirteen lunar samples consisting of four fine-grained igneous rocks, one medium-grained igneous rock, seven breccias, and one sample of fines were analyzed. The...
Let's Sing 'Auld Lang Syne' for the Upper Brandywine: Or, to continue with Burns, how the best laid environmental schemes of men "gang aft a-gley"
Luna Bergere Leopold
1970, Natural History (79) 5-15
Perhaps the most lamentable mistake that one can make is to be right too soon. This was the story of the Brandywine Plan, an attempt to organize local people for the permanent protection of the environmental amenities of their own land.The Upper East Branch of Brandywine Creek drains a rolling...
Isotopic composition of strontium in sea water throughout Phanerozoic time
Z. E. Peterman, C. E. Hedge, H. A. Tourtelot
1970, Geochimica et Cosmochimica Acta (34) 105-120
Isotopic analyses of strontium in primary fossil carbonate reveal significant variations in Sr87Sr86">Sr87Sr86 of sea water during the Phanerozoic. The strontium isotopic composition may have been uniform from the Ordovician through the Mississippian, with an average Sr87Sr86">Sr87Sr86 of 0.7078. A subsequent decrease...
Salmonid viruses: Double infection of RTG-2 cells with Egtved and infectious pancreatic necrosis viruses
K. Wolf, P. E. Vestergard Jorgensen
1970, Archiv Fur Die Gesamte Virusforschung (29) 337-342
Egtved and infectious pancreatic necrosis (IPN) viruses were applied at high multiplicity alone and in combination to RTG-2 cells in liquid medium. Procedures were used which selectively suppressed one or the other virus, and the yields were determined after 64 hours at 15°C. The viruses showed an increase of 280...
Walleye fishery of Lake Erie in 1943-62 with emphasis on contributions of the 1942-61 year-classes
John W. Parsons
1970, Journal of the Fisheries Research Board of Canada (27) 1475-1489
The commercial fishery for walleyes (Stizostedion vitreum vitreum) in Lake Erie virtually collapsed in the late 1950's. The extreme decline in production was attributed primarily to a succession of weak year-classes, caused by habitat deterioration (increased water temperatures, enrichment, and pollution) in western Lake Erie. Unusually high fishing intensity and...
Chemical indicators of subsurface temperature applied to hot spring waters of Yellowstone National Park, Wyoming, U.S.A.
R.O. Fournier, A.H. Truesdell
1970, Geothermics (2) 529-535
Under favorable conditions the chemistry of hot springs may give reliable indications of subsurface temperatures and circulation patterns. These chemical indicators can be classified by the type of process involved:IndicatorDominant ProcessThe silica...
Serum protein changes in immune and nonimmune pigeons infected with various strains of Trichomonas gallinae
R. M. Kocan, C. M. Herman
1970, Journal of Wildlife Diseases (6) 43-47
Serum protein changes were studied in immune and nonimmune pigeons infected with three different strains of Trichomonas gallinae. Strain I (nonvirulent) produced no change in the relative concentration of serum components. Strains II (oral canker) and III (Jones' Barn) produced decreases in albumin and alpha globulins, and increases in beta and...
The diffusion of ions in unconsolidated sediments
F.T. Manheim
1970, Earth and Planetary Science Letters (9) 307-309
Diffusion in unconsolidated sediments generally proceeds at rates ranging from half to one twentieth of those applying to diffusion of ions and molecules in free solution. Diffusion rates are predictable with respect to porosity and path tortuosity in host sediments, and can be conveniently measured by determinations of electrical resistivity...
Body-scale relation and calculation of growth in fishes
Ralph Hile
1970, Transactions of the American Fisheries Society (99) 468-474
Most calculations of fish growth from scale measurements are made from one of four types of curves: straight line through the origin (Dahl-Lea); straight line with intercept (Lee); logarithmic line (Monastyrsky); empirically derived curve (SegerstråYle). Occasionally, different curves are used for different length intervals of fish. Present understanding of the...
Primitive and contaminated basalts from the Southern Rocky Mountains, U.S.A
B. R. Doe, P. W. Lipman, C. E. Hedge, H. Kurasawa
1969, Contributions to Mineralogy and Petrology (21) 142-156
Basalts in the Southern Rocky Mountains province have been analyzed to determine if any of them are primitive. Alkali plagioclase xenocrysts armored with calcic plagioclase seem to be the best petrographic indicator of contamination. The next best indicator of contamination is quartz xenocrysts armored with clinopyroxene. On the rocks and...
[Book review] Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies
R.C. Banks
1969, The Auk (86) 768-770
The completion of an ornithological series as important as the Bent Life Histories is an exciting event. Here is a series of 21 volumes, spanning a history of nearly 60 years from inception to completion, containing over 9,500 text pages of information about North American birds, largely the work of...
Recent surface movements in the Baldwin Hills, Los Angeles County, California
Robert O. Castle, R. F. Yerkes
1969, Open-File Report 69-36
The Baldwin Hills are located in the northwest part of the densely populated Los Angeles basin. They comprise one of several groups of isolated hills that extend along the northwest-trending Newport-Inglewood zone of folds and faults, a structural lineament identified with a series of very productive oil fields. In addition...
Disposal of liquid wastes by injection underground--Neither myth nor millennium
Arthur M. Piper
1969, Circular 631
Injecting liquid wastes deep underground is an attractive but not necessarily practical means for disposing of them. For decades, impressive volumes of unwanted oil-field brine have been injected, currently about 10,000 acre-feet yearly. Recently, liquid industrial wastes are being injected in ever-increasing quantity. Dimensions of industrial injection wells range widely...
Structural geologic interpretations from radar imagery
Robert G. Reeves
1969, Geological Society of America Bulletin (80) 2159-2164
Certain structural geologic features may be more readily recognized on sidelooking airborne radar (SLAR) images than on conventional aerial photographs, other remote sensor imagery, or by ground observations. SLAR systems look obliquely to one or both sides and their images resemble aerial photographs taken at low sun angle with the...
Experimental studies of pegmatite genesis: I. A model for the derivation and crystallization of granitic pegmatites
R. H. Jahns, C.W. Burnham
1969, Economic Geology (64) 843-864
The genesis of granitic igneous pegmatites is here considered in terms of a model conceived from results of field and laboratory studies and subsequently tested by means of experimental investigations. This model emphasizes the roles of water (and/or other relatively volatile substances), both as a dissolved constituent in granitic magmas...
Lake eutrophication— A natural process
Phillip E. Greeson
1969, Journal of the American Water Resources Association (JAWRA) (5) 16-30
Lake eutrophication is an economic, recreational, and aesthetic problem that affects every lake of the world. Eutrophication is the natural process of lake aging, and progresses irrespective of man's activities. Pollution, however, can hasten the natural rate of aging and shorten the life expectancy of a body of water. The...
Observations of the lunar regolith and the Earth from the television camera on Surveyor 7
Eugene Merle Shoemaker, R. M. Batson, H. E. Holt, E. C. Morris, J. J. Rennilson, E. A. Whitaker
1969, Journal of Geophysical Research (74) 6081-6119
Surveyor 7, the last spacecraft of the Surveyor series, landed about 30 km north of the rim crest of Tycho, one of the most prominent and well-known features in the southern part of the moon. About 21,000 pictures were transmitted during two lunar days of operation. At...
Glaciation on the continental margin off New England
Richard M. Pratt, John Schlee
1969, Geological Society of America Bulletin (80) 2335-2341
The Pleistocene glacial limit in the marine environment off New England can be traced by plotting the seaward limit of abundant sandy gravel and the position of shoals. Maximum limit of the last glaciation was probably along an irregular line extending through Nantucket Shoals, across...
Thermal additions and epifaunal organisms at Chalk Point, Maryland
Jon W. Nauman, Robert L. Cory
1969, Chesapeake Science (10) 218-226
Two sets of test panels, one in the intake and the other in the effluent canal of a steam-generating station, were submerged at monthly intervals in 1967. The panels were analyzed for epifaunal species composition, abundance, seasonal attachment, and total biomass production. The average surface-water temperature rose 6.3 C above...
