Replacement barite deposit, southern Independence Mountains, Nevada
Keith B. Ketner
1975, Journal of Research of the U.S. Geological Survey (3) 547-551
Allochthonous Devonian chert, metaquartzite, and greenstone in the Blue Basin quadrangle,, southern Independence Mountains, Nevada, are mineralized with barite forming a deposit of possible commercial grade and size. Textural evidence indicates that the barite was deposited in the host rocks principally by replacement, to a lesser extent by a process...
Diagenesis of Miocene siliceous shales, Temblor Range, California
K. J. Murata, R.R. Larson
1975, Journal of Research of the U.S. Geological Survey (3) 553-566
Siliceous Monterey Shale and related shales of the Temblor Range, Calif., are subdivided into three depth-controlled zones characterized by different forms of silica. These are, in descending stratigraphic order: (1) Biogenic opal zone, with remains of diatoms and other siliceous organisms, (2) diagenetic cristobalite zone, and (3) diagenetic quartz zone....
Quaternary faults at San Diego Bay, California
George W. Moore, Michael P. Kennedy
1975, Journal of Research of the U.S. Geological Survey (3) 589-595
Acoustic-reflection profiles of subbottom strata reveal numerous faults that cut Quaternary deposits within and directly outside of San Diego Bay. These faults, together with previously mapped onshore faults, constitute the Rose Canyon fault zone that forms the local west boundary of the Santa Ana tectonic block, which is bounded on...
Tectonic setting of the Tertiary volcanic rocks of the Olympic Peninsula, Washington
Wallace M. Cady
1975, Journal of Research of the U.S. Geological Survey (3) 573-582
Lower and middle Eocene abyssal and Hawaiian type tholeiitic basalts form two accumulations that apparently were once far out on the east flank of the Juan de Fuca Ridge, within the Juan de Fuca plate. One of these (more than 15 km thick) is near the eastern and southeastern periphery...
Spectrochemical determination of trace elements in galena
E. L. Mosier, J.C. Antweiler, J. M. Nishi
1975, Journal of Research of the U.S. Geological Survey (3) 625-631
A semiquantitative spectrochemical method is described by means of which 10-mg samples of galena can be analyzed for their trace element content. Results on 40 elements are reported as six logarithmically spaced intervals per order of magnitude and obtained by visual comparison with standards prepared in spectrographically pure lead sulfide....
Geomorphic evidence for late Holocene tilting in southern San Mateo County, California
David P. Adam
1975, Journal of Research of the U.S. Geological Survey (3) 613-617
Relations between the stream channels and the alluvial deposits along Bradley Creek and the lower part of Butano Creek suggest that the area has been tilted very recently, and localized swampy conditions supply additional supporting evidence. Radiocarbon dates show that some of the valley alluvium along Butano Creek was deposited...
Tectonics of the western Valley and Ridge foldbelt, Pendleton County, West Virginia - a summary report
William J. Perry Jr.
1975, Journal of Research of the U.S. Geological Survey (3) 583-588
A belt of high anticlines, the Nittany anticlinorium, occupies the western Valley and Ridge foldbelt in the central Appalachians. It extends southwestward from the Nittany arch of central Pennsylvania into the Virginias. An investigation of the tectonics of this anticlinorium in Pendleton County, W. Va., rules out active basement involvement...
Revised value for the O18 fractionation between CO2 and H2O at 25°C
James R. O’Neil, Lanford H. Adami, Samuel Epstein
1975, Journal of Research of the U.S. Geological Survey (3) 623-624
A new value of 1.0412 for the fractionation factor a between CO2 and H2O at 25°C is recommended on the basis of new data and a reevaluation of earlier published data....
Fossil fishes from the Pliocene or Pleistocene Cache Formation, Lake County, California
Richard W. Casteel, Michael J. Rymer
1975, Journal of Research of the U.S. Geological Survey (3) 619-622
The remains of fossil fishes comprising three species were found in the Cache Formation in Lake County, Calif. The rocks containing the fossils are considered to be late Pliocene or early Pleistocene. The species are all freshwater and primarily quiet-water types that now live in Clear Lake and the waters...
Age of volcanism, intrusion, and mineralization in the Thomas Range, Keg Mountain, and Desert Mountain, western Utah
David A. Lindsey, Charles W. Naeser, Daniel R. Shawe
1975, Journal of Research of the U.S. Geological Survey (3) 597-604
Twenty-six new age determinations by the fission-track method establish a chronology for volcanism, intrusion, and mineralization in the Thomas Range, Keg Mountain, and Desert Mountain, in western Utah. The fission-track ages confirm D. R. Shawe's three-fold classification of igneous rocks. The oldest group of rocks consists of flows, agglomerates, and...
The Oligocene volcanic center at Eureka, Nevada
M.C. Blake Jr., E.H. McKee, Richard F. Marvin, Miles L. Silberman, Thomas B. Nolan
1975, Journal of Research of the U.S. Geological Survey (3) 605-612
A volcanic center covering an area of about 80 km2 near Eureka, Nev., and active in the early Oligocene, is characterized by rhyolitic, rhyodacitic. and andesitic pyroclastic rocks, lava flows, and shallow intrusive bodies. These rocks were emplaced as intertonguing and interpenetrative units during a 5-m.y. interval; most of the...
Silica mineralogy and structure of the Monterey Shale, Temblor Range, California
K. J. Murata, R.G. Randall
1975, Journal of Research of the U.S. Geological Survey (3) 567-572
The d(101) spacing of diagenetic cristobalite decreases regularly with depth of burial in the siliceous Monterey Shale of the Temblor Range. This relation has been used to delineate the folded structure of the Monterey Shale at a locality near Taft....
Habitat use and home range of mallards breeding in Minnesota
D.S. Gilmer, I.J. Ball, L.M. Cowardin, John Riechmann, J.R. Tester
1975, Journal of Wildlife Management (39) 781-789
Telemetry techniques were used to study habitat use and home range of 12 drake and 12 hen mallards (Anas platyrhynchos) in the forested region of north-central Minnesota during the 1968-72 breeding seasons. Circumneutral bogs and seasonal wetlands were the most frequently used communities; the lakeshore communities most used were sand-gravel,...
Long-term effects of 4-aminopyridine exposure to birds and fish
E.W. Schafer, L. L. Marking
1975, Journal of Wildlife Management (39) 807-811
The avian frightening agent, 4-aminopyridine (4AP), was tested on five avian and two fish species to assess the effects of long-term 4AP exposure to nontarget vertebrates. Adult bobwhites (Colinus virginianus), mourning doves (Zenaida macroura), and ring-necked pheasants (Phasianus colchicus) were fed diets containing 3 percent 4AP-treated cracked corn diluted with...
Optimal exploitation strategies for an animal population in a Markovian environment: A theory and an example
David R. Anderson
1975, Ecology (56) 1281-1297
Optimal exploitation strategies were studied for an animal population in a Markovian (stochastic, serially correlated) environment. This is a general case and encompasses a number of important special cases as simplifications. Extensive empirical data on the Mallard (Anas platyrhynchos) were used as an example of general theory. The number of...
Disproportionate sex ratios of wolf pups
L.D. Mech
1975, Journal of Wildlife Management (39) 737-740
Males comprised 66 percent of wild wolf (Canis lupus) pups from a saturated, high-density wolf range in northeastern Minnesota, possibly reflecting disproportionate conception of males. Packs from areas of lower wolf density in other areas of Minnesota had equal sex ratios of pups or a disproportionate number of female pups....
New tritium data on movement of groundwater in western Fresno County, California
Joseph Fairfield Poland, Gordon L. Stewart
1975, Water Resources Research (11) 716-724
Well waters along two traverse lines were sampled in 1963 and tested for tritium concentration. Haskell et al. [1966] estimated from the apparent thermonuclear tritium concentrations that groundwater had moved westward in the lower water‐bearing zone at a maximum velocity of 14–16.5 mi (23–27 km) in 9 yr. The maximum velocities...
Whirling disease (Myxosoma cerebralis): Control with ultraviolet irradiation and effect on fish
G. L. Hoffman
1975, Journal of Wildlife Diseases (11) 505-507
Water contaminated by Myxosoma cerebralis was disinfected with ultraviolet irradition to control whirling disease. Irradiation at 18,000 microwatt seconds/cm2 (MWS/cm2) reduced infectivity of M. cerebralis by 31-86% and 27,650 MWS/cm3 reduced infectivity by 86-100%, even in the presence of a small amount of silt....
The scientific referee
Frank T. Manheim
1975, IEEE Transactions on Professional Communication (PC-18) 190-195
In the May 1973 issue of EOS, I criticized tendencies in earth science periodicals to discourage referee anonymity. I stressed that exposing referees to unnecessary personal and subjective influences tended to degrade standards of quality and promoted cliques, fragmentation, superspecialization, and proliferation of scientific literature. Generally speaking, division of opinion...
Maximum stages and discharges of small streams in Indiana
L.G. Davis, R.G. Horner
1975, Open-File Report 75-403
Home range defense in the red fox, Vulpes vulpes L.
E.M. Preston
1975, Journal of Mammalogy (56) 645-652
This paper describes the home range defense behavior observed when nonresident male red foxes were introduced into established home ranges of resident male-female pairs. In 12 observation periods, four intruders were introduced to each of three mated pairs which had been given three weeks to acclimate to a 4.05-hectare, fenced...
Depredation of sea otter pups by bald eagles at Amchitka Island, Alaska
Steve Sherrod, J. A. Estes, C.M. White
1975, Journal of Mammalogy (56) 701-703
No abstract available. ...
Earthquake shaking and damage to buildings
R.A. Page, W. B. Joyner, J.A. Blume
1975, Science (189) 601-608
Ground shaking close to the causative fault of an earthquake is more intense than it was previously believed to be. This raises the possibility that large numbers of buildings and other structures are not sufficiently resistant for the intense levels of shaking that can occur close to the fault. Many...
Status of projects in Minnesota, fiscal years 1975-76
U.S. Geological Survey
1975, Report
No abstract available....
Injection-pipe system for artificial recharge
H.O. Reeder
1975, Journal of Research of the U.S. Geological Survey (3) 501-503
No abstract available....
