Preseismic and coseismic deformation associated with the Hollister, California, earthquake of November 28, 1974
James C. Savage, Mary Ann Spieth, W.H. Prescott
1976, Journal of Geophysical Research (81) 3567-3574
The epicenter of the Hollister earthquake (ML = 5.1) of November 28, 1974, is located near the center of an 81‐line trilateration network which has been surveyed annually since 1971. Five lines in the neighborhood of the epicenter were surveyed just 2 days before the earthquake, and two other lines nearby...
Strain accumulation on the San Andreas Fault near Palmdale, California
W.H. Prescott, James C. Savage
1976, Journal of Geophysical Research B: Solid Earth (81) 4901-4908
Precise distance measurements of a 10×25 km 15‐station trilateration network that spans the San Andreas fault west of Palmdale, California, have been repeated annually in the period 1971–1975. The network appears to be deforming under simple uniform tensor shear of about 0.21±0.03 μstrain/yr with the direction of maximum right‐lateral shear...
Canine tooth wear in captive big brown bats (Eptesicus fuscus)
D. R. Clark Jr.
1976, Journal of Mammalogy (57) 778-780
No abstract available. ...
Industrial glass beads in beach sand from Chesapeake Bay, Maryland
R. B. Finkelman, C. Milton, R.R. Larson
1976, Chesapeake Science (17) 310-310
No abstract available. ...
Fat content in migratory central Arizona Brazilian free-tailed bats, Tadarida brasiliensis (Molossidae)
Thomas J. O'Shea
1976, Southwestern Naturalist (21) 321-326
Fat content of migratory Tadarida brasiliensis was determined during the spring, summer and fall of 1972 in the Verde Valley of Arizona. Fat indices were highest in March arrivals, generally declined throughout the summer, and were lowest in September. In both 1972 and 1973 bats had arrived at...
Episodic strain accumulation in Southern California
W. Thatcher
1976, Science (194) 691-695
Reexamination of horizontal geodetic data in the region of recently discovered aseismic uplift has demonstrated that equally unusual horizontal crustal deformation accompanied the development of the uplift. During this time interval compressive strains were oriented roughly normal to the San Andreas fault, suggesting that the uplift produced little shear strain...
Field recalibration of radiometers by using the shading technique
Alan P. Jackman, Richard D. Noble
1976, Journal of Research of the U.S. Geological Survey (4) 757-764
Use of radiometers to measure radiant energy components in energy budgets is widespread in water-resources studies. Previous experience has shown that readings of radiometers may contain substantial errors. These errors may be due to deterioration of the instrument during use and (or) inaccurate initial calibration. Both of these errors may...
Liquid scintillation counting of filtered algae in primary production studies
Doyle W. Stephens
1976, Journal of Research of the U.S. Geological Survey (4) 753-756
A technique for preparing phytoplankton samples for liquid scintillation counting and standardization has been developed. It consists of digestion of the carbon-14 labeled algae on small, inert filters coupled with a filter standardization and channels ratio method of efficiency determination. The technique is an alternative to many currently used methods...
Classification of organic solutes in water by using macroreticular resins
J.A. Leenheer, Edward W. D. Huffman Jr.
1976, Journal of Research of the U.S. Geological Survey (4) 737-751
A series of macroreticular resin adsorbents was evaluated for ability to extract and fractionate organic solutes found in natural waters. Studies with organic solute standards and natural water samples lead to the development of dissolved organic carbon (DOC) fractionation analysis whereby the DOC is concentrated and fractionated by macroreticular...
Relations among surficial materials, light intensity, and sycamore-seed germination along the Potomac River near Washington, D.C.
Robert S. Sigafoos
1976, Journal of Research of the U.S. Geological Survey (4) 733-736
Seed of sycamore, a common tree on river flood plains, germinate in mineral soil exposed to high light intensities. Germination rates are low on surfaces covered with leaf litter, and seedlings die when shaded by closely spaced herbaceous plants. All germination rates were higher when seed were kept moist....
Use of thermal-infrared imagery in ground-water investigations, northwestern Montana
A. J. Boettcher, R. M. Haralick, C. A. Paul, Norman Smothers
1976, Journal of Research of the U.S. Geological Survey (4) 727-732
Thermal-infrared imagery was used to locate ground-water inflow along a 50-mile (80-kilometre) reach of the Kootenai River and Lake Koocanusa and a 55-mi (88-km) reach of the Clark Fork of the Columbia River in northwestern Montana and northeastern Idaho. The imagery confirmed that measured streamflow gains below Noxon Rapids Dam,...
Microprobe study of olivine chromitites of the Goodnews Bay ultramafic complex, Alaska, and the occurrence of platinum
M. L. Bird, A. L. Clark
1976, Journal of Research of the U.S. Geological Survey (4) 717-725
Electron-microprobe analyses of the dunite and olivine chromitite of the ultramaflc complex at Goodnews Bay, Alaska, show that the chromite contains more ferrous and ferric iron than is found in chromite from alpine or stratiform complexes. The iron-magnesium distribution coefficients between chromite and olivine demonstrate that more ferrous iron...
Brannerite from the Penn Haven Junction uranium occurrence, Carbon County, Pennsylvania
R. B. Finkelman, Harry Klemic
1976, Journal of Research of the U.S. Geological Survey (4) 715-716
Thorium-free brannerite has been identified in Upper Devonian uraniferous sandstone from Penn Haven Junction, Carbon County, Pa. The brannerite was located by a variation of the "Lexan" technique and is associated with galena, uraninite, and clausthalite. The angular thorium-free nature of the brannerite suggests that it formed by metamorphism of...
Metagraywacke in the Salinian Block, central Coast Ranges, California: And a possible correlative across the San Andreas Fault
Donald C. Ross
1976, Journal of Research of the U.S. Geological Survey (4) 683-696
The schist of Sierra de Salinas is a monotonously homogeneous biotite quartzofeldspathic schist with minor amounts of quartzite, amphibolite, and marble that forms a northwest-trending outcrop belt that strikes across parts of the Santa Lucia and Gabilan Ranges and is traceable further south in the subsurface to where it is...
Gravity studies in the Carolina slate belt near the Haile and Brewer mines, north-central South Carolina
Henry Bell III, Peter Popenoe
1976, Journal of Research of the U.S. Geological Survey (4) 667-682
The Bouguer gravity map of part of the Carolina slate belt near the Haile and Brewer mines in South Carolina shows anomalies related to rock units. The most conspicuous of the anomalies coincide with coarse-grained granitic plutons. Mathematically calculated models using an iterative three-dimensional solution of the gravity anomalies show...
A comparison of Landsat images and Nimbus thermal-inertia mapping of Oman
Howard A. Pohn
1976, Journal of Research of the U.S. Geological Survey (4) 661-665
Thermal-inertia maps can be used in conjunction with Landsat photographs to resolve ambiguous identification of lithologies in remote areas....
Geothermal flux through palagonitized tephra, Surtsey, Iceland: The Surtsey temperature-data-relay experiment via Landsat-1
Jules D. Friedman, Duane M. Preble, Sveinn P. Jakobsson
1976, Journal of Research of the U.S. Geological Survey (4) 645-659
The net geothermal flux through palagonitized basaltic tephra rims of the Surtur I and Surtur II craters at Surtsey, Iceland, in 1972, is estimated at 780 ±325 μcal cm-2s-1, indicating a decline since 1969 when a flux of 1,500 μcal cm-2s-1 was estimated. Heat flux in this range characterizes the...
The heat capacities of Calorimetry Conference copper and of muscovite KAl2(AlSi3)O10 (OH)2, pyrophyllite Al2Si4O10(OH)2, and illite K3(Al7Mg)(Si14Al2)O40(OH)8 between 15 and 375 K and their standard entropies at 298.15 K
Richard A. Robie, Bruce S. Hemingway, William H. Wilson
1976, Journal of Research of the U.S. Geological Survey (4) 631-644
The heat capacities of Calorimetry Conference copper and of muscovite, pyrophyllite, and illite were measured between 15 and 375 K using an adiabatic calorimeter. Tables of the thermodynamic functions C°p.(H°T —H°O)/T, (G°T —H°O)/T, and S°T —S°O are presented for these phases at integral temperatures from 0 to. 370 K. At...
Fracturing and subsidence of the land surface caused by the withdrawal of ground water in the Milford area, Utah
R.M. Cordova, R. W. Mower
1976, Journal of Research of the U.S. Geological Survey (4) 505-510
Fracturing and subsidence of the land surface in the Milford area of Utah have resulted from the decline of water levels due to pumping in unconsolidated deposits of Quaternary age. To the writers' knowledge, these are the first such effects of ground-water withdrawal reported in Utah. The fracturing is in an...
An infiltration index useful in estimating low-flow characteristics of drainage basin
Jeffrey T. Armbruster
1976, Journal of Research of the U.S. Geological Survey (4) 533-538
Regionalization of low flows using basin characteristics has not produced satisfactory results because the effect of geology has not been included. In the Susquehanna River basin, ground-water discharge from the regolith is the primary source of low flows. This paper describes the development of an infiltration index, which, by characterizing...
Improving estimates of streamflow characteristics by using Landsat-1 imagery
Este F. Hollyday
1976, Journal of Research of the U.S. Geological Survey (4) 517-531
Imagery from the first Earth Resources Technology Satellite (renamed Landsat-1) was used to discriminate physical features of drainage basins in an effort to improve equations used to estimate streamflow characteristics at gaged and ungaged sites. Records of 20 gaged basins in the Delmarva Peninsula of Maryland, Delaware, and Virginia were...
Sedimentary depositional environments of uranium and petroleum host rocks of the Jackson Group, south Texas
Kendell A. Dickinson
1976, Journal of Research of the U.S. Geological Survey (4) 615-629
Determination of depositional environments in rocks of the Jackson Group of late Eocene age aids in the exploration for uranium and petroleum in south Texas. During deposition of the Jackson Group, conditions were similar to those existing along the modern Gulf Coast of Texas except for a less arid climate...
Fresh ground water found deep beneath Nantucket Island, Masachusetts
F. A. Kohout, E.H. Walker, Michael H. Bothner, J.C. Hathaway
1976, Journal of Research of the U.S. Geological Survey (4) 511-515
In a deep water-resources and stratigraphic test well near the center of Nantucket Island, about 30 miles (48 kilometres) off the New England coast, freshwater has been found at greater depths than predicted by the Ghyben-Herzberg principle. An uppermost lens of freshwater, which occupies relatively permeable glacial-outwash sand and gravel...
Gamma-ray spectrometer measurement of 238U/235U in uranium ore from a natural reactor at Oklo, Gabon
Robert M. Moxham
1976, Journal of Research of the U.S. Geological Survey (4) 589-592
About 20 years ago, Kuroda theorized that a high-grade uranium deposit emplaced about 2x109 years ago could achieve criticality and sustain a nuclear chain reaction, given a sufficient thickness of high-grade ore and an appropriate water content. Such a natural reactor was found in 1972 at the Oklo deposit, Gabon....
Brown, yellow, orange, and greenish-black thorites from the Seerie pegmatite, Colorado
Mortimer H. Staatz, John W. Adams, James S. Wahlberg
1976, Journal of Research of the U.S. Geological Survey (4) 575-582
Four types of thorite - brown, yellow, orange, and greenish-black - occur together in narrow fracture fillings rich in brown fluorite near the outer edge of the Seerie pegmatite. The brown thorite is by far the most abundant. The thorites are remarkably similar in composition except for their Fe2O3 and...
