Transient-pressure analysis in geothermal steam reservoirs with an immobile vaporizing liquid phase
A.F. Moench, P.G. Atkinson
1978, Geothermics (7) 253-264
A finite-difference model for the radial horizontal flow of steam through a porous medium is used to evaluate transient-pressure behavior in the presence of an immobile vaporizing or condensing liquid phase. Graphs of pressure drawdown and buildup in terms of dimensionless pressure and time are obtained for a well discharging...
Methods for regional assessment of geothermal resources
P. Muffler, R. Cataldi
1978, Geothermics (7) 53-89
A consistent, agreed-upon terminology is prerequisite for geothermal resource assessment. Accordingly, we propose a logical, sequential subdivision of the "geothermal resource base", accepting its definition as all the thermal energy in the earth's crust under a given area, measured from mean annual temperature. That part of the resource base which...
Conceptual models in exploration geochemistry-The Basin and Range Province of the Western United States and Northern Mexico
T.G. Lovering, J. H. McCarthy Jr.
1978, Journal of Geochemical Exploration (9) 113-276
This summary of geochemical exploration in the Basin and Range Province is another in the series of reviews of geochemical-exploration applications covering a large region; this series began in 1975 with a summary for the Canadian Cordillera and Canadian Shield, and was followed in 1976 by a similar summary for...
Reproduction of chaparral shrubs after fire: A comparison of sprouting and seeding strategies
Jon E. Keeley, Paul H. Zedler
1978, American Midland Naturalist (99) 142-161
The relative ability of sprouting and nonsprouting chaparral shrubs to recover from fire was studied by examining population of congeneric pairs of species in burned and adjacent unburned areas. The pairs of species selected, with the nonsprouting species named first, were Arctostaphylos...
Fecundity of the bloater (Coregonus hoyi) in Lake Michigan
Lee Emery, Edward H. Brown Jr.
1978, Transactions of the American Fisheries Society (107) 785-789
Using ovaries sampled seasonally from Lake Michigan bloaters in 1968-1969, we determined that one complement or modal group of eggs is produced each year and spawned mainly during January, February, and March. Fecundities estimated for 65 fish taken in October ranged from 3,230 eggs in one medium-size bloater (241 mm...
Transient creep and semibrittle behavior of crystalline rocks
N.L. Carter, S. H. Kirby
1978, Pure and Applied Geophysics PAGEOPH (116) 807-839
We review transient creep and semibrittle behavior of crystalline solids. The results are expected to be pertinent to crystalline rocks undergoing deformation in the depth range 5 to 20 km, corresponding to depths of focus of many major earthquakes. Transient creep data for crystalline rocks at elevated temperatures are analyzed...
Mate preference in wild and domesticated (game-farm) mallards (Anas platyrhynchos): I. Initial preference
K.M. Cheng, R.N. Shoffner, R.E. Phillips, F.B. Lee
1978, Animal Behaviour (26) 996-1003
Wild and game-farm mallards (Anas platyrhynchos) raised in pure strain and mixed groups were tested for initial mate preference in a choice test. Female mallards showed no significant preference but males of either strain raised with females of their own strain significantly preferred female models of their own strain during...
Net energy maintenance requirements of salmonids as measured by direct calorimetry: Effect of body size and environmental temperature
R. R. Smith, G. L. Rumsey, M. L. Scott
1978, Journal of Nutrition (108) 1017-1024
Most studies of metabolic rates and energy requirements in aquatic animals have been conducted using indirect methods wherein heat production estimates were based on O2 consumed and CO2 produced. The purpose of the present study was to determine the feasibility of direct calorimetry as a method for measuring heat production of fish...
Effects of paved surfaces on recharge to the Floridan aquifer in east-central Florida: A conceptual model
C. H. Tibbals
1978, Water-Resources Investigations Report 78-76
The proportionate amount of surface area that can be paved in Floridan aquifer recharge areas in east-central Florida without reducing the net recharge to the Floridan aquifer is a function of many variables that include rainfall, depth to water table, depth to potentiometric surface of the Floridan, evaporation from paved...
Complete Bouguer gravity maps and gravity models of the Date Creek basin and vicinity, Maricopa, Mojave, Yavapai, and Yuma Counties, Arizona
Jeffrey C. Wynn, James K. Otton
1978, Open-File Report 78-362
No abstract available....
The architecture of the porphyry-metal system as a prospecting stratagem in the Southern Rocky Mountains
George J. Neuerburg
1978, Open-File Report 78-130
A model of the porphyry-metal system characteristic of the consanguineous Cretaceous and Tertiary igneous rocks and associated ores of the southern Rocky Mountains is constructed from the bits and pieces exposed in the Colorado mineral belt and the San Juan volcanic field. Hydrothermally altered rocks in a part of the...
Field and modeling studies of San Francisco Bay
T. J. Conomos, F.H. Nichols, R. T. Cheng, D. H. Peterson
1978, Conference Paper
Field expectations and the determination of wildcat drilling
Emil D. Attanasi, L. J. Drew
1977, Southern Economic Journal (44) 53-67
There is currently some dissatisfaction with macroeconomic approaches to modeling the supply of domestic crude oil. One problem that has been pointed out is that the estimated supply responses of new discoveries brought about by price increases appear to be unrealistically high. Because data frequently used in these models are...
Modified Mercalli intensity scale of 1931
Henry Spall, editor(s)
1977, Earthquake Information Bulletin (USGS) (9) 30-31
[No abstract]...
Genetic differences in growth and survival of juvenile hatchery and wild steelhead trout, Salmo gairdneri
R.R. Reisenbichler, J.D. McIntyre
1977, Journal of the Fisheries Research Board of Canada (34) 123-128
Relative growth and survival of offspring from matings of hatchery and wild Deschutes River (Oregon) summer steelhead trout, Salmo gairdneri, were measured to determine if hatchery fish differ genetically from wild fish in traits that can affect the stock–recruitment relationship of wild populations. Sections of four natural streams and a...
Combined use of digital aquifer models and field base-flow data to identify recharge-leakage areas of artesian aquifers
Richard H. Johnston, P. Patrick Leahy
1977, Journal of Research of the U.S. Geological Survey (5) 491-496
As a result of continuous pumping since the 1890's, a regional cone of depression encompassing 363 km2 has developed within the artesian Miocene Cheswold aquifer at Dover, Del. The aquifer is not being recharged significantly by leakage near the center of the cone, nor is major recharge induced in the...
Model for evaluating the effects of dikes on the water and salt balance of Great Salt Lake, Utah
K.M. Waddell, F.K. Fields
1977, Utah Geological and Mineralogical Survey Water-Resources Bulletin 21
A model was developed for predicting the water and salt budget for various diking options in Great Salt Lake....
Application of linear statistical models of earthquake magnitude versus fault length in estimating maximum expectable earthquakes
Robert K. Mark
1977, Geology (5) 464-466
Correlation or linear regression estimates of earthquake magnitude from data on historical magnitude and length of surface rupture should be based upon the correct regression. For example, the regression of magnitude on the logarithm of the length of surface rupture L can be used to estimate magnitude, but the regression of log L on...
Conversion factors: SI metric and U.S. customary units
Water Resources Division, U.S. Geological Survey
1977, Report
The policy of the U.S. Geological Survey is to foster use of the International System of Units (SI) which was defined by the 11th General Conference of Weights and Measures in 1960. This modernized metric system constitutes an international "language" by means of which communications throughout the world's scientific and...
Analog-model prediction of the hydrologic effects of sanitary sewerage in southeast Nassau and southwest Suffolk Counties, New York
G.E. Kimmel, H.F.H. Ku, A.W. Harbaugh, D.J. Sulam, R.T. Getzen
1977, Long Island Water Resources Bulletin LIWR-6
State of stress in the lithosphere: Inferences from the flow laws of olivine
S. H. Kirby
1977, Pure and Applied Geophysics PAGEOPH (115) 245-258
The experimental flow data for rocks and minerals are reviewed and found to fit a law of the form {Mathematical expression} where {Mathematical expression} This law reduces to the familiar power-law stress dependency at low stress and to an exponential stress dependency at high stress. Using the material flow law...
The stress state near Spanish Peaks, colorado determined from a dike pattern
O.H. Muller, D. D. Pollard
1977, Pure and Applied Geophysics PAGEOPH (115) 69-86
The radial pattern of syenite and syenodiorite dikes of the Spanish Peaks region is analysed using theories of elasticity and dike emplacement. The three basic components of Ode??'s model for the dike pattern (a pressurized, circular hole; a rigid, planar boundary; and uniform regional stresses) are adopted, but modified to...
The origin of garnet in the anorthosite-charnockite suite of the Adirondacks
J. M. McLelland, P.R. Whitney
1977, Contributions to Mineralogy and Petrology (60) 161-181
Detailed analysis of textural and chemical criteria in rocks of the anorthosite-charnockite suite of the Adirondack Highlands suggests that development of garnet in silica-saturated rocks of the suite occurs according to the reaction: {Mathematical expression}, where ?? is a function of the distribution of Fe and Mg between the several...
Entropy, materials, and posterity
P. Cloud
1977, Geologische Rundschau (66) 678-696
Materials and energy are the interdependent feedstocks of economic systems, and thermodynamics is their moderator. It costs energy to transform the dispersed minerals of Earth's crust into ordered materials and structures. And it costs materials to collect and focus the energy to perform work - be it from solar, fossil...
Survey of trace elements in coals and coal-related materials by neutron activation analysis
R.R. Ruch, R.A. Cahill, J.K. Frost, L.R. Camp, H.J. Gluskoter
1977, Journal of Radioanalytical Chemistry (38) 415-424
Utilizing primarily instrumental neutron activation analysis (INAA) and other analytical methods as many as 61 elements were quantitatively surveyed in 170 U.S. whole coals, 70 washed coals, and 40 bench samples. Data on areal and vertical distributions in various regions were obtained along with extensive information on the mode of...
