Earthquake prediction in the Soviet Union; an interview with I. L. Nersesov
H. Spall
1980, Earthquake Information Bulletin (USGS) (12) 60-63
Dr. I. L. Nersesov is a seismologist with the Institute of Physics of the Earth, Academy of Sciences of the U.S.S.R., Moscow. He is one of the leaders in the Soviet national program of earthquake prediction. ...
Age and growth of rock bass in eastern Lake Ontario
David R. Wolfert
1980, New York Fish and Game Journal (27) 88-90
To test the reliability of current techniques, five biologists appraised the ages of 200 quail from a random sample of wings collected during the 1952-53 hunting season in Alabama. Attempt was made to distinguish adults from juveniles, to ascertain the stage of post-nuptial and post-juvenile molts, and to estimate the...
Comparison of bed form variance spectra within a meander bend during flood and average discharge
R.A. Levey, B. Kjerfve, R.T. Getzen
1980, Journal of Sedimentary Petrology (50) 149-155
Time series analysis of streambed elevation in a meander bend along the Congaree River was used to determine the changes in bed form population succeeding a 16-year flood event. Bed forms observed during the flood event had a significantly greater total height variance...
Measurement of irrigated acreage in Western Kansas from LANDSAT images
K.M. Keene, C.D. Conley
1980, Environmental Geology (3) 107-116
In the past four decades, irrigated acreage in western Kansas has increased rapidly. Optimum utilization of vital groundwater supplies requires implementation of long-term water-management programs. One important variable in such programs is up-to-date information on acreage under irrigation. Conventional ground survey methods of estimating irrigated acreage are too slow to...
Comment on 'A reinterpretation of the linear heat flow and heat production relationship for the exponential model of the heat production in the crust' by R.N. Singh & J.G. Negi.
A.H. Lachenbruch
1980, Geophysical Journal of the Royal Astronomical Society (63) 791-795
In their recent paper, Singh & Negi, (This journal, 57, 741-744) contend that if thd slope of the empirical linear relation between heat flow and heat production is interpreted as the decay-length of an exponential depth-distribution of sources, a discrepancy rises, whereas if it is interpreted as the depth of...
Crystallization history of Kilauea Iki lava lake as seen in drill core recovered in 1967-1979
Rosalind Tuthill Helz
1980, Bulletin Volcanologique (43) 675-701
Kilauea Iki lava lake formed during the 1959 summit eruption, one of the most picritic eruptions of Kilauea Volcano in the twentieth century. Since 1959 the 110 to 122 m thick lake has cooled slowly, developing steadily thickening upper and lower crusts, with a lens of more molten lava in...
Computational methods for a three-dimensional model of the petroleum-discovery process
J.H. Schuenemeyer, W.J. Bawiec, L.J. Drew
1980, Computers & Geosciences (6) 323-360
A discovery-process model devised by Drew, Schuenemeyer, and Root can be used to predict the amount of petroleum to be discovered in a basin from some future level of exploratory effort: the predictions are based on historical drilling and discovery data. Because marginal costs of discovery and production are a...
The age curves of sulfur and oxygen isotopes in marine sulfate and their mutual interpretation
George E. Claypool, William T. Holser, Isaac R. Kaplan, Hitoshi Sakai, Israel Zak
1980, Chemical Geology (28) 199-260
Three hundred new samples of marine evaporite sulfate, of world-wide distribution, were analyzed for δ34S, and 60 of these also for δ18O in the sulfate ion. Detailed δ34S age curves for Tertiary—Cretaceous, Permian—Pennsylvanian, Devonian, Cambrian and Proterozoic times document large variations in δ34S. A summary curve forδ18O also shows definite...
Morphology of Lonar Crater, India: Comparisons and implications
R.F. Fudali, D.J. Milton, K. Fredriksson, A. Dube
1980, The Moon and the Planets (23) 493-515
Lonar Crater is a young meteorite impact crater emplaced in Deccan basalt. Data from 5 drillholes, a gravity network, and field mapping are used to reconstruct its original dimensions, delineate the nature of the pre-impact target rocks, and interpret the emplacement mode of the ejecta. Our estimates of the pre-erosion...
Shallow, low-permeability reservoirs of northern Great Plains: Assessment of their natural gas resources.
Dudley D. Rice, George W. Shurr
1980, American Association of Petroleum Geologists Bulletin (64) 969-987
Major resources of natural gas are entrapped in low-permeability, low-pressure reservoirs at depths less than 4,000 ft (1,200 m) in the northern Great Plains. This shallow gas is the product of the immature stage of hydrocarbon generation and is referred to as biogenic gas. Prospective low-permeability, gas-bearing reservoirs range in...
Hydrocarbon gas in sediment from the shelf, slope and basin of the Bering Sea.
K.A. Kvenvolden, G.D. Redden
1980, Geochimica et Cosmochimica Acta (44) 1145-1150
Methane, ethane, ethene, propane, propene, isobutane and n-butane are present in low concentrations in the top 2m of sediment. Methane is most abundant and its concentration increases with depth in the sediment. Ethane, ethene, propane and propene are present in almost all samples, but the concentrations of these gases are...
The 1977 eruption of Kilauea volcano, Hawaii
R. B. Moore, Rosalind Tuthill Helz, D. Dzurisin, G. P. Eaton, R. Y. Koyanagi, P. W. Lipman, J. P. Lockwood, G. S. Puniwai
1980, Journal of Volcanology and Geothermal Research (7) 189-210
Kilauea volcano began to erupt on September 13, 1977, after a 21.5-month period of quiescence. Harmonic tremor in the upper and central east rift zone and rapid deflation of the summit area occurred for 22 hours before the outbreak of surface activity. On the first night, spatter ramparts formed along...
The composition, structure, and stability of guinier-preston zones in lunar and terrestrial orthopyroxene
Gordon L. Nord Jr.
1980, Physics and Chemistry of Minerals (6) 109-128
Lunar and terrestrial orthopyroxenes (Mg,Fe,Ca)2Si2O6 contain varying abundances of coherent, Ca-enriched Guinier-Preston (G.P.) zones. G.P. zones 5-6 unit cells thick have been found in one lunar sample whereas all other examples (lunar and terrestrial) are only one unit-cell-thick. Electron diffraction maxima from the larger lunar G.P. zones indicate that d100=18.52...
Late Cenozoic volcanic rocks of the southern Sierra Nevada, California: I. Geology and petrology: Summary
J.G. Moore, F. C. W. Dodge
1980, Geological Society of America Bulletin, Part I (91) 515-518
The geology and petrology of the Cenozoic volcanic rocks of the region of California between 38° and 35°45'N latitude and 117°30' and 120°W longitude, including the rocks of a major potassic magmatic province on the west slope of the Sierra Nevada, have been...
Visual classification of very fine-grained sediments: Evaluation through univariate and multivariate statistics
M. Hohn, E.B. Nuhfer, R.J. Vinopal, D.S. Klanderman
1980, Journal of the International Association for Mathematical Geology (12) 589-606
Classifying very fine-grained rocks through fabric elements provides information about depositional environments, but is subject to the biases of visual taxonomy. To evaluate the statistical significance of an empirical classification of very fine-grained rocks, samples from Devonian shales in four cored wells in West Virginia and Virginia were measured for...
The mass balance approach: application to interpreting the chemical evolution of hydrologic systems
Niel Plummer, W. Back
1980, American Journal of Science (280) 130-142
Mass balance calculations are applied to observed chemical and isotopic data of three natural water systems involving carbonate reactions in order to define mineral stoichiometry of reactants and products, relative rates of reactions, and mass transfer. One study evaluates reactions in a lagoon on the east coast of the Yucatan...
Evaluation of organic matter, subsurface temperature and pressure with regard to gas generation in low-permeability Upper Cretaceous and Lower Tertiary sandstones in Pacific Creek area, Sublette and Sweetwater Counties, Wyoming.
B. E. Law, C. W. Spencer, N. H. Bostick
1980, Mountain Geologist (17) 23-35
The onset of overpressuring occurs at c.3,500 m, near the base of the U. Cretaceous Lance Formation. The development of overpressuring may involve several processes; however, interpretation of the available information indicates that active generation of large amounts of wet gas is one of the more important processes. The present...
Sedimentary masses and concepts about tectonic processes at underthrust ocean margins
D.W. Scholl, Roland E. von Huene, T.L. Vallier, D. G. Howell
1980, Geology (8) 564-568
Tectonic processes associated with subduction of oceanic crust, but unrelated to the collision of thick crustal masses or microplates, are presumed by many geologists to significantly affect the formation and deformation of large sedimentary bodies at underthrust ocean margins. More geologists are familiar with the concept of subduction accretion, which describes...
Scaling variables and interpretation of eigenvalues in principal component analysis of geologic data
A.T. Miesch
1980, Journal of the International Association for Mathematical Geology (12) 523-538
The dominant feature distinguishing one method of principal components analysis from another is the manner in which the original data are transformed prior to the other computations. The only other distinguishing feature of any importance is whether the eigenvectors of the inner product-moment of the transformed data matrix are taken...
Use of altered volcanic ash falls in stratigraphic studies of coal-bearing sequences: an example from the Upper Cretaceous Ferron Sandstone Member of the Mancos Shale in central Utah.
Thomas A. Ryer, R.E. Phillips, B.F. Bohor, R. M. Pollastro
1980, Geological Society of America Bulletin (91) 579-586
The Ferron consists of 5 delta cycles, each of which includes one coal zone which contains at least one, and usually several, laterally persistent kaolinitic claystone partings. Laboratory study of the partings demonstrates that they represent altered volcanic ash falls. These partings have proven particularly useful in reconstructing the depositional...
Petrology of Hualalai volcano, Hawaii: Implication for mantle composition
D.A. Clague, E.D. Jackson, T. L. Wright
1980, Bulletin Volcanologique (43) 641-656
Hualalai is one of five volcanoes whose eruptions built the island of Hawaii. The historic 1800-1801 flows and the analyzed prehistoric flows exposed at the surface are alkalic basalts except for a trachyte cone and flow at Puu Waawaa and a trachyte maar deposit near Waha Pele. The 1800-1801 eruption...
Environment of ore deposition in the Creede mining district, San Juan Mountains, Colorado; Part IV, source of fluids, from oxygen, hydrogen, and carbon isotope studies
P. M. Bethke, R. O. Rye
1979, Economic Geology (74) 1832-1851
The hydrogen isotopic composition of fluids responsible for formation of the near-surface silver-base metal vein deposits at Creede was measured by direct analysis of inclusion fluids in sphalerite, quartz, and rhodochrosite and was estimated from analyses of illite and chlorite. The oxygen isotopic composition was determined directly on inclusion fluids...
Survival of one- and two-year-old monosex grass carp in small ponds
A.E. Thomas, Ray R. Carter, Donald C. Greenland
1979, Progressive Fish-Culturist (41) 38-38
Limited information has become available on the survival of monosex (female) grass carp (Ctenopharyngodon idella) reared in earthen ponds. Monosex fish produced in 1975 (Stanley 1976) were reared 27 months in earthen ponds at the Fish Farming Experimental Station, Stuttgart, Arkansas. Periodic transfers of these fish to different ponds afforded...
Observations on distribution, diet, and breeding of the Hawaiian thrush
Charles van Riper III, J. Michael Scott
1979, The Condor (81) 65-71
Distribution, breeding habits, and diet of the Hawaiian Thrush were recorded over seven years on the island of Hawaii. The range has been much reduced, with the result that today the species occupies approximately 30% of its former range, no longer being found in the Kohala Mountains or in the...
Acute oral and percutaneous toxicity of pesticides to mallards: Correlations with mammalian toxicity data
R. H. Hudson, M. A. Haegele, R. K. Tucker
1979, Toxicology and Applied Pharmacology (47) 451-460
Acute oral (po) and 24-hr percutaneous (perc) LD50 values for 21 common pesticides (19 anticholinesterases, of which 18 were organophosphates, and one was a carbamate; one was an organochlorine central nervous system stimulant; and one was an organonitrogen pneumotoxicant) were determined in mallards (Anas platyrhynchos). Three of the pesticides tested...
