Oroville earthquakes: Normal faulting in the Sierra Nevada foothills
C. G. Bufe, F.W. Lester, K.M. Lahr, J.C. Lahr, L. C. Seekins, Thomas C. Hanks
1976, Science (192) 72-74
Aftershocks of the Oroville, California, earthquake of 1 August 1975 define a 16- by 12-kilometer fault plane striking north-south and dipping 60 degrees to the west to a depth of 10 kilometers. Focal mechanisms from P-wave first motions indicate normal faulting with the western, Great Valley side downdropped relative to...
Qal’eh hasan ali maars, central Iran
D.J. Milton
1976, Bulletin Volcanologique (40) 201-208
A group of craters 120 km southeast of Kerman, the largest 1200 m across and 300 m deep, are typical maars, excavated depression with rims of bedded pyroclastic debris. Most of the crater rims are composed entirely of country rock clasts, but the largest crater yields tephrite, composed of phenocrysts...
Turbidity distribution in the Atlantic Ocean
Stephen Eittreim, E. M. Thorndike, L. Sullivan
1976, Deep-Sea Research and Oceanographic Abstracts (23) 1115-1127
The regional coverage of Lamont nephelometer data in the North and South Atlantic can be used to map seawater turbidity at all depths. At the level of the clearest water, in the mid-depth regions, the turbidity distribution primarily reflects the pattern of productivity in the surface waters. This suggests that...
Automation in photogrammetry: Recent developments and applications (1972-1976)
M.M. Thompson, E.M. Mikhail
1976, Photogrammetria (32) 111-145
An overview of recent developments in the automation of photogrammetry in various countries is presented. Conclusions regarding automated photogrammetry reached at the 1972 Congress in Ottawa are reviewed first as a background for examining the developments of 1972-1976. Applications are described for each country reporting significant developments. Among fifteen conclusions...
Alternate drop pulse polarography
J. H. Christie, Larry L. Jackson, R. A. Osteryoung
1976, Analytical Chemistry (48) 242-247
The new technique of alternate drop pulse polarography is presented. An experimental evaluation of alternate drop pulse polarography shows complete compensation of the capacitative background due to drop expansion. The capillary response phenomenon was studied in the absence of faradaic reaction and the capillary response current was found to depend...
Hydrologic data for urban studies in the Fort Worth, Texas, metropolitan area, 1974
R.M. Slade Jr., J.M. Taylor
1976, Report
No abstract available....
Hydrologic data for Cow Bayou, Brazos River Basin, Texas, 1974
J. K. VanZandt
1976, Report
No abstract available....
A method for estimating magnitude and frequency of floods in Montana
M. V. Johnson, R. J. Omang
1976, Open-File Report 75-650
This report provides methods for estimating flood characteristics at most natural flow sites on rural streams in Montana. It also contains significant flood data and related information for many gaged sites on Montana streams. Frequency curves are provided for 442 gaged sites as defined by log-Pearson Type III analysis. To...
The February 1969 east rift eruption of Kilauea Volcano, Hawaii
Donald A. Swanson, D. B. Jackson, R. Y. Koyanagi, T. L. Wright
1976, Professional Paper 891
No abstract available....
An outbreak of erysipelas in eared grebes (Podiceps nigricollis)
Wayne I. Jensen, Sally E. Cotter
1976, Journal of Wildlife Diseases (12) 583-586
An outbreak of erysipelas killed an estimated 5,000 aquatic birds on Great Salt Lake (Utah) in late November, 1975. Although several thousand ducks and gulls were using the lake, at least 99 percent of the victims were eared grebes. A hypothetical explanation for the selective mortality is offered....
Utilization of satellite data for inventorying prairie ponds and lakes
E.A. Work, D.S. Gilmer
1976, Photogrammetric Engineering and Remote Sensing (42) 685-694
By using data acquired by LANDSAT-1 (formerly ERTS- 1), studies were conducted in extracting information necessary for formulating management decisions relating to migratory waterfowl. Management decisions are based in part on an assessment ofhabitat characteristics, specifically numbers, distribution, and quality of ponds and lakes in the prime breeding range. This...
Extended cabfac and Qmodel computer programs for Q-mode factor analysis of compositional data
J.E. Klovan, A.T. Miesch
1976, Computers & Geosciences (1) 161-178
The computer program CABFAC for Q-mode factor analysis of geologic data has been extended for use with data having constant row-sums. Another program, QMODEL, reads an output file from CABFAC and can be used to develop a variety of Q-mode models. The models serve to reproduce estimates of the original...
Evidence of the impacting body of the Ries crater - the discovery of Fe-Cr-Ni veinlets below the crater bottom
Goresy A. El, E. C. T. Chao
1976, Earth and Planetary Science Letters (31) 330-340
Fe-Cr-Ni particles and veinlets have been discovered in the top 15 m of the compressed zone with abundant shatter cones below the bottom of the Ries crater. The metallic particles are less than a few microns across. They occur in various minerals along healed intergranular and locally in intragranular microfractures...
Indexes associated with information theory in water quality
S.M. Zand
1976, Journal of the Water Pollution Control Federation (48) 2026-2031
In many biological studies of water quality, a diversity index is calculated in 'bits per individual' by using Shannon's Approximation to Brillouin's Formula. Difficulties associated with such use of Shannon's Formula and its associated parameters are discussed. Recent research has indicated that diversity indexes can be improved if (a) biological...
Distribution of small channels on the Martian surface
D. Pieri
1976, Icarus (27) 25-50
The distribution of small channels on Mars has been mapped from Mariner 9 images, at the 1:5 000 000 scale, by the author. The small channels referred to here are small valleys ranging in width from the resolution limit of the Mariner 9 wide-angle images (???1 km) to about 10...
A note on the effect of fault gouge thickness on fault stability
J. Byerlee, R. Summers
1976, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (13) 35-36
At low confining pressure, sliding on saw cuts in granite is stable but at high pressure it is unstable. The pressure at which the transition takes place increases if the thickness of the crushed material between the sliding surfaces is increased. This experimental result suggests that on natural faults the...
Foraminiferal biostratigraphy of the shelf edge: a key to late Quaternary paleoenvironments
C. Wylie Poag, B.R. Sidner
1976, Palaeogeography, Palaeoclimatology, Palaeoecology (19) 17-37
Foraminiferal assemblages in eight piston cores from West Flower Garden Bank at the edge of the Texas continental shelf contain a nearly complete record of late Quaternary paleoclimatic and geologic events. The faunas are divisible into three distinct successive biofacies on the basis of both planktonic and benthic foraminifers: the...
Removal of toxic chemicals from water with activated carbon
V. K. Dawson, L. L. Marking, T.D. Bills
1976, Transactions of the American Fisheries Society (105) 119-123
Activated carbon was effective in removing fish toxicants and anesthetics from water solutions. Its capacity to adsorb 3‐trifluoromethyl‐4‐nitrophenol (TFM), antimycin, Noxfish(R) (5% rotenone), Dibrom(R), juglone, MS‐222, and benzocaine ranged from 0.1 to 64 mg per gram of carbon. The adsorptive capacity (end point considered as a significant discharge) of activated carbon...
Concentration and mineralogical residence of elements in rich oil shales of the Green River Formation, Piceance Creek basin, Colorado, and the Uinta Basin, Utah - A preliminary report
G. A. Desborough, Janet K. Pitman, C. Huffman Jr.
1976, Chemical Geology (17) 13-26
Ten samples from drillcore of two rich oil-shale beds from the Parachute Creek Member of the Eocene Green River Formation, Piceance Creek basin, Colorado, and Uinta Basin, Utah, were analyzed for 37 major, minor, and trace elements. For 23 of these elements, principal mineralogical residence is established or suggested and...
Determination of lead in rocks by radiometric isotope dilution and substoichiometric extraction
Philip Aruscavage
1976, Analytica Chimica Acta (82) 343-348
A rapid procedure is described for the determination of lead in rocks by an isotope-dilution substoichiometric method. After the sample has been digested with acid in the presence of 210Pb tracer, the lead is separated by dithizone extractions. After the lead has been back-extracted into aqueous solution, it is reacted with...
Avian botulism epizootiology on sewage oxidation ponds in Utah
Daniel W. Moulton, Wayne I. Jensen, Sondra K. Stewart
1976, Journal of Wildlife Management (40) 735-742
In the microenvironment concept of avian botulism epizootiology, it is hypothesized that invertebrate carcasses may serve both as a substrate for toxin production by Clostridium botulinum type C and as a vehicle for toxin transmission to water birds. We field-tested that hypothesis by attempting to induce botulism in wing-clipped mallard...
Discovery of natural resources
P. W. Guild
1976, Science (191) 708-713
Mankind will continue to need ores of more or less the types and grades used today to supply its needs for new mineral raw materials, at least until fusion or some other relatively cheap, inexhaustible energy source is developed. Most deposits being mined today were exposed at the surface or...
The national coal-resources data system of the U.S. geological survey
M.D. Carter
1976, Computers & Geosciences (2) 331-340
The National Coal Resources Data System (NCRDS) was designed by the U.S. Geological Survey (USGS) to meet the increasing demands for rapid retrieval of information on coal location, quantity, quality, and accessibility. An interactive conversational query system devised by the USGS retrieves information from the data bank through a standard...
Water-resources investigations of the U.S. Geological Survey in selected coal-energy areas of Utah
Kidd M. Waddell
1976, Report
No abstract available....
The San Francisco cow; did she or didn’t she?
M. Hill
1976, Earthquake Information Bulletin (USGS) (8) 19-23
No one has suggested that Mr. Shafter's nameless cow was the cause of the 1906 earthquake, but she has been the source of as persistent a rumor as Mrs. Murphy's Chicago cow. Since 1906, "the cow that fell in the crack" has been a favorite subject of humorous speculation. large...
