Significant results from using earth observation satellites for mineral and energy resource exploration
William D. Carter
1981, Advances in Space Research (1) 261-269
A large number of Earth-observation satellites orbit our world several times each day, providing new information about the land and sea surfaces and the overlying thin layer of atmosphere that makes our planet unique. Meteorological satellites have had the longest history of experimental use and most are now considered operational....
Preliminary paleomagnetic poles and correlation of the Proterozoic Uinta Mountain Group, Utah and Colorado
S.L. Bressler
1981, Earth and Planetary Science Letters (55) 53-64
Stable paleomagnetic directions have been obtained from seven sites spanning much of the 7-km-thick middle Proterozoic Uinta Mountain Group. The characteristic magnetization is carried partly by detrital(?) and secondary specularite and partly by hematite pigment. Preliminary paleomagnetic poles for six of...
Strain accumulation in southern California, 1973-1980
J.C. Savage, W.H. Prescott, M. Lisowski, N.E. King
1981, Journal of Geophysical Research Solid Earth (86) 6991-7001
Frequent surveys of seven trilateration networks in southern California over the interval 1973–1980 suggest that a regional increment in strain may have occurred in 1978–1979. Prior to 1978 and after late 1979 the strain accumulation has been predominantly a uniaxial north-south compression. This secular trend was interrupted sometime in 1978–1979...
Woolly erionite from the Reese River zeolite deposit, Lander County, Nevada, and its relationship to other erionites
Arthur J. Gude III, Richard A. Sheppard
1981, Clays and Clay Minerals (29) 378-384
Woolly erionite from the Reese River deposit, Nevada, is identical in appearance to that at the type locality, near Durkee, Oregon. Both of these erionites differ in appearance from all other erionite reported in the past 20 years from diverse rocks throughout the world which are described as prismatic or...
Two oil types on North slope of Alaska: Implications for exploration
L. B. Magoon, George E. Claypool
1981, American Association of Petroleum Geologists Bulletin (65) 644-652
Forty oil samples from across the North Slope of Alaska have been analyzed by the U.S. Bureau of Mines and the U.S. Geological Survey. Results of these analyses suggest two separate genetic oil types. The first, the Simpson-Umiat oil type, occurs in reservoir rocks of Cretaceous and Quaternary age and...
Toxicity of volcanic-ash leachate to a blue-green alga. Results of a preliminary bioassay experiment
Diane M. McKnight, G. L. Feder, E.A. Stiles
1981, Environmental Science & Technology (15) 362-364
No abstract available....
Improved spectrophotometric cell for hydrothermal solutions
N.J. Susak, D.A. Crerar, T.C. Forseman, J.L. Haas Jr.
1981, Review of Scientific Instruments (52) 428-431
A simple, inexpensive spectrophotometric cell was designed for use with aqueous solutions for which temperature is a maximum of 325??C and pressure, 28 MPa. The cell has an internal volume of 5 ml and a path length of 1.31 cm. Each furnace assembly is 120 mm in diameter ?? 150...
Solubility of NaCl in aqueous electrolyte solutions from 10 to 100°C
M.A. Clynne, R.W. Potter II, J.L. Haas Jr.
1981, Journal of Chemical and Engineering Data (26) 396-398
The solubilities of NaCl in aqueous KCl, MgCl2, CaCl2, and mixed CaCl2-KCl solutions have been determined from 10 to 100??C. The data were fit to an equation, and the equation was used to calculate values of the change in solubility of NaCl, ???[NaCl]/???T. These values are required for calculations of...
Estimation of impervious-area washoff parameters
William M. Alley
1981, Water Resources Research (17) 1161-1166
In recent years many models have been developed which simulate the quality of rainfall runoff from urban areas. Common to many of these models is the use of an exponential washoff equation. This washoff equation is often modified by an availability equation to account for the effects of runoff intensity...
Dissolution of salt on the east flank of the Permian Basin in the southwestern U.S.A.
K.S. Johnson
1981, Journal of Hydrology (54) 75-93
Hydrogeologic studies prove that natural dissolution of bedded salt occurs at shallow depths in many parts of the Permian Basin of the southwestern U.S.A. This is especially well-documented on the east side of the basin in study areas on the Cimarron River and Elm Fork in western Oklahoma, and on...
Depositional environments of the Pennsylvanian Pottsville Formation in the Black Warrior basin of Alabama
C.A. Horsey
1981, Journal of Sedimentary Petrology (51) 799-806
The Pennsylvanian Pottsville Formation of the Black Warrior basin in Alabama comprises as much as 3000 m of shale, sandstone, and coal. The boundary between the informal units of the lower Pottsville and the upper Pottsville is the base of the Black Creek...
Magnetic signals from the core of the earth and secular variation
L.R. Alldredge
1981, Journal of Geophysical Research Solid Earth (86) 7957-7965
An oscillating, radial magnetic dipole source was assumed to exist in the core of the earth, 100 km beneath the core-mantle boundary. As an approximation, electromagnetic propagation was assumed in the core in lieu of hydromagnetic propagation, which could not be used because of unknown internal fields.Using Debye potentials, the...
Issue in pollution control: interplant cost differences and economies of scale.
R.W. Pittman
1981, Land Economics (57) 1-17
Seeks evidence concerning the issues of the relative efficiencies of different institutional arrangements for pollution control and the implications of control requirements for economies of scale and barriers to entry. Data is derived from the estimation of a production function for 30 pulp and paper mills in Wisconsin and Michigan....
U-Th-Pb systematics in hydrothermally altered granites from the Granite Mountains, Wyoming
J. S. Stuckless, Ignatius T. Nkomo, B. R. Doe
1981, Geochimica et Cosmochimica Acta (45) 635-645
U-Th-Pb systematics were investigated in 15 samples representing two types of deuterically altered Archean granite (albitized and silicified-epidotized granite) from the Granite Mountains, Wyoming. The loss of K-feldspar during both types of deuteric alteration was accompanied by an extreme reduction of Pb content from roughly 40 ppm to less than...
Geochemical evidence for a Brooks Range mineral belt, Alaska
S.P. Marsh, J. B. Cathrall
1981, Journal of Geochemical Exploration (15) 367-380
Geochemical studies in the central Brooks Range, Alaska, delineate a regional, structurally controlled mineral belt in east—west-trending metamorphic rocks and adjacent metasedimentary rocks. The mineral belt extends eastward from the Ambler River quadrangle to the Chandalar and Philip Smith quadrangles, Alaska, from 147° to 156°W. longitude, a distance of more...
Quaternary and geodetically measured crustal movements in the Tokai District, Central Honshu, Japan
W. Thatcher, T. Matsuda
1981, Journal of Geophysical Research Solid Earth (86) 9237-9247
Geodetic measurements made in this century demonstrate that modern movements correlate well with deformation that has occurred during the past 2 m.y. Both show effects of subduction and of the Quaternary collision of Izu Peninsula with Central Honshu. Westward from Suruga Bay, deformation is greatest near the coast, decreases markedly...
Chemical constraints of groundwater management in the Yucatan peninsula, Mexico
W. Back, J.M. Lesser
1981, Journal of Hydrology (51) 119-130
Two critical objectives of water management in the Yucatan are: (1) to develop regional groundwater supplies for an expanding population and tourism based on the Mayan archeological sites and excellent beaches; and (2) to control groundwater pollution in a chemically sensitive system made...
Annual and semiannual variations of the geomagnetic field at equatorial locations
W.H. Campbell
1981, Journal of Atmospheric and Terrestrial Physics (43) 607-616
For a year of quiet solar-activity level, geomagnetic records from American hemisphere observatories located between about 0?? and 30?? north geomagnetic latitude were used to compare the annual and semiannual variations of the geomagnetic field associated with three separate contributions: (a) the quiet-day midnight level, MDT; (b) the solar-quiet daily...
Back-extraction of trace elements from organometallic-halide extracts for determination by flameless atomic absorption spectrometry
J. Robert Clark, John G. Viets
1981, Analytical Chemistry (53) 65-70
The Methyl isobutyl ketone-Amine synerGistic Iodkte Complex (MAGIC) extraction system offers the advantage that a large number of trace elements can be rapidly determined with a single sample preparation procedure. However, many of the elements extracted by the MAGIC system form volatile organometallic halide salts when the organic extract is...
Martian channels and valleys: Their characteristics, distribution, and age
M. H. Carr, G.D. Clow
1981, Icarus (48) 91-117
All Martian channels and valleys visible at a resolution of 125 to 300 meters between 65°N and 65°S were mapped at a scale of 1:5,000,000 and the maps then digitized. Correlations of valley presence with other surface features show that almost...
Ne matrix spectra of the sym-C6Br3F3+ radical cation
V.E. Bondybey, T.J. Sears, T.A. Miller, C. Vaughn, J.H. English, R.S. Shiley
1981, Chemical Physics (61) 9-16
The electronic absorption and laser excited, wavelength resolved fluorescence spectra of the title cation have been observed in solid Ne matrix and vibrationally analysed. The vibrational structure of the excited B2A2??? state shows close similarity to the parent compound. The X2E??? ground state structure is strongly perturbed and irregular owing...
Manganese cycles and the origin of manganese nodules, Oneida Lake, New York, U.S.A.
W.E. Dean, W.S. Moore, K.H. Nealson
1981, Chemical Geology (34) 53-64
Oneida Lake is a large shallow lake in central New York that is characterized by high algal productivity and concentrated deposits of freshwater manganese nodules. Budgets for Mn in the lake and its tributaries show a net loss of 23 metric tons of manganese within the lake per year with...
Jasperoid float and stream cobbles as tools in geochemical exploration for hydrothermal ore deposits
T.G. Lovering
1981, Journal of Geochemical Exploration (14) 69-81
Fragments of silicified rocks that are associated with deposits of base and precious metals may be transported as cobbles and pebbles in alluvium far downstream from the source outcrop. These rocks commonly exhibit certain characteristics which distinguish them from other detrital siliceous material, and may thus serve as a useful...
Strain accumulation across the Denali fault in the Delta River canyon, Alaska
J.C. Savage, M. Lisowski, W.H. Prescott
1981, Journal of Geophysical Research Solid Earth (86) 1005-1014
Deformation along the Denali fault in the Delta River canyon was determined from geodetic surveys in 1941/1942, 1970, 1975, and 1979. The data were best for the 1975–1979 interval; in that period the average strain accumulation was essentially pure right lateral shear at a rate of 0.6 ± 0.1 μrad/a...
Ridges and scarps in the equatorial belt of Mars
Baerbel K. Lucchitta, J.L. Klockenbrink
1981, The Moon and the Planets (24) 415-429
The morphology and distribution of ridges and scarps on Mars in the ± 30° latitude belt were investigated. Two distinct types of ridges were recognized. The first is long and linear, resembling mare ridges on the Moon; it occurs mostly in plains areas. The other is composed of short, anastomosing...
