Thermal areas on Kilauea and Mauna Loa Volcanoes, Hawaii
Thomas J. Casadevall, Richard W. Hazlett
1983, Journal of Volcanology and Geothermal Research (16) 173-188
Active thermal areas are concentrated in three areas on Mauna Loa and three areas on Kilauea. High-temperature fumaroles (115-362°C) on Mauna Loa are restricted to the summit caldera, whereas high-temperature fumaroles on Kilauea are found in the upper East Rift Zone (Mauna Ulu summit fumaroles, 562°C), middle East Rift Zone...
The relationship of acquisition systems to automated stereo correlation.
A. P. Colvocoresses
1983, Photogrammetric Engineering and Remote Sensing (49) 539-544
Today a concerted effort is being made to expedite the mapping process through automated correlation of stereo data. Stereo correlation involves the comparison of radiance (brightness) signals or patterns recorded by sensors. Conventionally, two-dimensional area correlation is utilized but this is a rather slow and cumbersome procedure. Digital correlation can...
ORIGIN OF THERMAL FLUIDS AT LASSEN VOLCANIC NATIONAL PARK: EVIDENCE FROM NOBLE AND REACTIVE GAS ABUNDANCES.
Alfred H. Truesdell, Emanuel Mazor, Nancy L. Nehring
1983, Conference Paper, Transactions - Geothermal Resources Council
Thermal fluid discharges at Lassen are dominated by high-altitude fumaroles and acid-sulfate hot springs in the Park, and lower altitude, neutral, high-chloride hot springs in Mill Valley 7-10 km to the south. The interrelations of these fluids have been studied by noble and reactive gas analyses. Atmospheric noble gas (ANG)...
Lake phosphorus loading form septic systems by seasonally perched groundwater
R. J. Gilliom, C.R. Patmont
1983, Journal of the Water Pollution Control Federation (55) 1297-1305
The movement of effluent phosphorus (P) from old septic systems by seasonally perched groundwater was investigated. A previous study indicated a correlation between P loadings and the presence of old homes. Water samples were taken from shallow wells installed 10 to 50 m downgradient from seven septic systems 20 to...
The role of digital cartographic data in the geosciences
S.C. Guptill
1983, Computers & Geosciences (9) 23-26
The increasing demand of the Nation's natural resource developers for the manipulation, analysis, and display of large quantities of earth-science data has necessitated the use of computers and the building of geoscience information systems. These systems require, in digital form, the spatial data on map products. The basic cartographic data...
Hydrothermal reactivity of saponite
Gene Whitney
1983, Clays and Clay Minerals (31) 1-8
Saponite crystallizes from amorphous gel having an ideal saponite composition within 7 days at all experimental temperatures between 300° and 550°C at 1 kbar pressure. Reactions subsequent to this initial crystallization vary in type and degree, depending on the temperature of reaction and the type of interlayer cation. Above 450°C...
Selective dissolution of siliceous microfossils observed in a box core from the north-east equatorial Pacific
D. Kadko, J. R. Blueford, L.H. Burckle, J. Barron
1983, Nature (302) 139-141
A box core taken at 11??50.3??? N and 137??28.2??? W in the Central Pacific manganese nodule province was studied to determine the pattern of diatom and radiolarian preservation with depth in the sediment, as well as to observe downcore variations in clay mineralogy. We observed marked deterioration of the siliceous...
VARIATIONS IN MINERAL MATTER CONTENT OF A PEAT DEPOSIT IN MAINE RESTING ON GLACIO-MARINE SEDIMENTS.
Cornelia C. Cameron, Paul Schruben
1983, Conference Paper, Los Alamos National Laboratory (Report) LA
The Great Heath, Washington County, Maine, is an excellent example of a multidomed ombrotrophic peatland resting on a gently undulating surface of glacio-marine sediments and towering above modern streams. A comprehensive study sponsored by the Geological Survey of Maine in cooperation with the U. S. Geological Survey included preparation of...
A description of the external and internal quiet daily variation currents at North American locations for a quiet-Sun year.
W.H. Campbell
1983, Geophysical Journal of the Royal Astronomical Society (73) 51-64
An order 4, degree 12 spherical harmonic analysis of the smoothed quiet geomagnetic daily variations was used to separate the external and internal geomagnetic Sq field at North American locations for the quiet-Sun year, 1965. These fields were represented by a month-by-month display of equivalent current vortex systems with dominant,...
Gas-film coefficients for streams
R. E. Rathbun, D. Y. Tai
1983, Journal of Environmental Engineering (109) 1111-1127
Equations for predicting the gas-film coefficient for the volatilization of organic solutes from streams are developed. The film coefficient is a function of windspeed and water temperature. The dependence of the coefficient on windspeed is determined from published information on the evaporation of water from a canal. The dependence of...
Taeniolite, an uncommon lithium-mica from Coyote Peak, Humboldt County, California.
Richard C. Erd, G.K. Czamanske, C.E. Meyer
1983, Mineralogical Record (14) 39-40
Taeniolite has been found in a late pegmatitic clot in a mafic alkalic diatreme at Coyote Peak; associated species are natrolite, pectolite, aegirine, barytolamprophyllite, rasvumite and sphalerite. The taeniolite is green-brown with sp. gr. (meas.) 2.85(1) and H. 31/2. Optically it is biaxial (-) with alpha 1.541(2), beta = gamma...
The compositionally zoned eruption of 1912 in the Valley of Ten Thousand Smokes, Katmai National Park, Alaska
W. Hildreth
1983, Journal of Volcanology and Geothermal Research (18) 1-56
On June 6–8, 1912, ∼ 15 km3 of magma erupted from the Novarupta caldera at the head of the Valley of Ten Thousand Smokes (VTTS), producing ∼ 20 km3 of air-fall tephra and 11–15 km3 of ash-flow tuff within ∼ 60 hours. Three discrete periods of ash-fall at Kodiak correlate, respectively, with Plinian...
PROPOSED SPECIFICATIONS FOR INERTIAL SURVEYING.
William H. Chapman
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The purpose of this paper is to continue the movement toward placing inertial surveying instruments in the toolbox of the geodetic surveyor. A set of specifications is proposed for performing horizontal geodetic surveys with inertial instruments that will meet the Federal Geodetic Control Committee (FGCC) second- and third-order standards. These...
Mineral resource potential map of the Carson-Iceberg Roadless Areas, central Sierra Nevada, California
William J. Keith, Maurice A. Chaffee, Donald Plouff, Michael S. Miller
1983, Miscellaneous Field Studies Map 1416-B
No abstract available....
LITHOLOGIC MAPPING USING LANDSAT THEMATIC MAPPER DATA.
M. H. Podwysocki, J.W. Salisbury, O. D. Jones, D.L. Mimms
1983, Conference Paper
The paper is in abstract form. It discusses the Landsat-4 Thematic Mapper (TM), with its new near infrared bands centered at 1. 65 mu m and 2. 20 mu m and spatial resolution of 30 m, which has been used to distinguish rocks containing minerals having ferric-iron absorption bands in...
Two examples of earthquake- hazard reduction in southern California.
W. J. Kockelman, C.C. Campbell
1983, Earthquake Information Bulletin (USGS) (15) 216-225
Because California is seismically active, planners and decisionmakers must try to anticipate earthquake hazards there and, where possible, to reduce the hazards. Geologic and seismologic information provides the basis for the necessary plans and actions. Two examples of how such information is used are presented. The first involves assessing the...
A mechanism to explain the generation of earthquake lights
D.A. Lockner, M.J.S. Johnston, J.D. Byerlee
1983, Nature (302) 28-33
Explanations of how earthquake lights might arise have failed to show how large charge densities can be concentrated and sustained in a conductive Earth. A physical model is proposed, based on frictional heating of the fault, that solves this and related problems. ?? 1983 Nature Publishing Group....
Calculation of a velocity distribution from particle trajectory end-points.
Lowell A. Rasmussen
1983, Journal of Glaciology (29) 203-214
The longitudinal component of the velocity of a particle at or near a glacier surface is considered, its position as a function of time being termed its trajectory. Functional relationships are derived for obtaining the trajectory from the spatial distribution of velocity and for obtaining the velocity...
Characteristic analysis-1981: Final program and a possible discovery
R.B. McCammon, J.M. Botbol, R. Sinding-Larsen, R. W. Bowen
1983, Journal of the International Association for Mathematical Geology (15) 59-83
The latest ornewest version of thecharacteristicanalysis (NCHARAN)computer program offers the exploration geologist a wide variety of options for integrating regionalized multivariate data. The options include the selection of regional cells for characterizing deposit models, the selection of variables that constitute the models, and the choice of logical combinations of variables...
NEW HORIZONS FOR THE NATIONAL HIGH-ALTITUDE PHOTOGRAPHY PROGRAM.
Peter F. Bermel
1983, Conference Paper
The National High-Altitude Photography Program (NHAP) is a multi-Federal agency activity to acquire uniform imagery for the establishment of a national high-altitude photographic data base. Since the inception of NHAP in 1980, black-and-white and color infrared stereoscopic imagery has been acquired for about 50% of the 3,000,000 square miles in...
Landsat analysis of the Yangjiatan tungsten district, Hunan Province, People's Republic of China
W. D. Carter, T. H. Kiilsgaard
1983, Advances in Space Research (3) 113-123
The Yangjiatan tungsten district at latitude 27??28??? N. and longitude 111??54???E. is located about 140 km southwest of the city of Changsha and 35 km northeast of the town of Shaoyang, southeast Hunan Province, People's Republic of China. The deposits, consisting largely of scheelite in veins (Wang, 1975), are contained...
Introduction: seismology and earthquake engineering in Central and South America.
A. F. Espinosa
1983, Earthquake Information Bulletin (USGS) (15) 4-6
Reports the state-of-the-art in seismology and earthquake engineering that is being advanced in Central and South America. Provides basic information on seismological station locations in Latin America and some of the programmes in strong-motion seismology, as well as some of the organizations involved in these activities.-from Author...
Eastern Devonian shales: Organic geochemical studies, past and present
Irving A. Breger, Patrick G. Hatcher, L.A. Romankiw, F.P. Miknis
1983, Conference Paper, Preprints Symposia
The Eastern Devonian shales are represented by a sequence of sediments extending from New York state, south to the northern regions of Georgia and Alabama, and west into Ohio and to the Michigan and Ilinois Basins. Correlatives are known in Texas. The shale is regionally known by a number of...
Sorption of radium-226 from oil-production brine by sediments and soils
E. R. Landa, D.F. Reid
1983, Environmental Geology (5) 1-8
The sorption of226Ra from oil-production brine by soils and sediments was investigated. Sorption was rapid, and the percentage sorbed increased with brine dilution. Greatest removals of226Ra from sediments in the laboratory occurred with alkaline DTPA, HCl, and BaCl2, with lesser removals using CaCl2 and NaCl solutions. Digestion of sediments with...
Geochemistry of the Chattanooga shale, Dekalb County, central Tennessee.
J.S. Leventhal, Paul H. Briggs, J.W. Baker
1983, Southeastern Geology (24) 101-116
This Upper Devonian shale is of interest because of its unusual enrichment in trace elements, especially U; a new chemical analysis for major, minor and trace elements is presented. Stable isotopes of carbon (organic) show delta 13C approx -29per mille and for total sulphur show -21 to -27per mille delta...
