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...
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...
A strategy for mineral and energy resource independence
W. D. Carter
1983, Advances in Space Research (3) 223-236
Data acquired by Landsats 1, 2, and 3, are beginning to provide the information on which an improved mineral and energy resource exploration strategy can be based. Landsat 4 is expected to augment this capability with its higher resolution (30 m) and additional spectral bands in the Thematic Mapper (TM)...
CONTRIBUTION OF LAND USE DATA TO THE INVESTIGATION OF TRENDS IN FLOODING IN THE TUG FORK BASIN OF KENTUCKY, VIRGINIA, AND WEST VIRGINIA.
Sarah E. Bowers, Arthur G. Scott
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The U. S. Geological Survey, in cooperation with the U. S. Bureau of Mines and the Office of Surface Mining Reclamation and Enforcement, is investigating effects of mining on flood frequency and magnitude within the basin. Changing land use, particularly the acceleration of surface mining, may cause or contribute to...
Surveyors, cartographers, photogrammetrists; identification friends or foes
Frederick J. Doyle
1983, Cartography (13) 88-95
Largely because of historical developments, the disciplines of geodesy, surveying, photogrammetry, cartography and remote sensing which make up the profession of cartographic science are organised into numerous societies at both the national and international levels. Partly as a consequence of this separatism, an effective education system for the profession is...
Paleohydrological methods and some examples from Swedish fluvial environments I. Cobble and boulder deposits
G. P. Williams
1983, Geografiska Annaler, Series A (65 A) 227-243
This article establishes approximate empirical relations for determining the minimum unit stream power, bed shear stress and mean flow velocity capable of moving cobbles and boulders on streambeds. The derived equations then are used to estimate the minimum paleoflows that could have transported the boulders of two ancient...
Mammoth Lakes earthquakes and ground uplift: precursors to possible volcanic activity ( USA)?
R. A. Bailey
1983, Earthquake Information Bulletin (USGS) (15) 88-101
Recent seismicity and ground uplift in the area are described. A comparison with other areas in the Cascades is made and the possibility of the Long Valley Magma Chamber as a source for eruptions is discussed. -P.N.Chroston...
Geo-botanical evidence of Late Quaternary mass wasting in block field areas of Virginia
Cliff R. Hupp
1983, Earth Surface Processes and Landforms (8) 439-450
Studies of block fields at Massanutten Mountain, Virginia, document and provide information on the magnitude and frequency of mass movement on these coarse-grained slopes. Although Pleistocene periglacial climate may have facilitated original formation of block fields, some block fields now continue to spread downslope during intense runoff events. Present block-field...
Geotherm: the U.S. geological survey geothermal information system
J. D. Bliss, A. Rapport
1983, Computers & Geosciences (9) 35-39
GEOTHERM is a comprehensive system of public databases and software used to store, locate, and evaluate information on the geology, geochemistry, and hydrology of geothermal systems. Three main databases address the general characteristics of geothermal wells and fields, and the chemical properties of geothermal fluids; the last database is currently...
Groundwater contamination by organic bases derived from coal-tar wastes
W. E. Pereira, C.E. Rostad, J.R. Garbarino, M. F. Hult
1983, Environmental Toxicology and Chemistry (2) 283-294
A fluid sample from a shallow aquifer contaminated by coal-tar wastes was analyzed for organic bases. The sample consisted of a mixture of aqueous and oily-tar phases. The phases were separated by centrifugation and filtration. Organic bases were isolated from each phase by pH adjustment and solvent extraction. Organic bases...
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...
Crustal and upper mantle structure of the northern and central Sierra Nevada
B.B. Mavko, G. A. Thompson
1983, Journal of Geophysical Research Solid Earth (88) 5874-5892
Teleseismic data were recorded within the Sierra Nevada to look for lateral variations in the upper mantle. The data were collected at both temporary and permanent stations, and P wave residuals were computed. After correcting the P residual data for crustal and topographic effects, there is still a variation of as much as 0.5-0.6...
Storm-controlled oblique dunes of the Oregon coast
R. E. Hunter, B. M. Richmond, T. R. Alpha
1983, Geological Society of America Bulletin (94) 1450-1465
The large (mean height 25 m, spacing 300 m), relatively straight-crested dunes of the central Oregon coast migrate an average of 3.8 m/yr toward an azimuth of 26°. The dunes are transverse to the strong, south-southwesterly winter storm winds that are responsible for...
U. S. GEOLOGICAL SURVEY LAND REMOTE SENSING ACTIVITIES.
Doyle G. Frederick
1983, Conference Paper
USGS uses all types of remotely sensed data, in combination with other sources of data, to support geologic analyses, hydrologic assessments, land cover mapping, image mapping, and applications research. Survey scientists use all types of remotely sensed data with ground verifications and digital topographic and cartographic data. A considerable amount...
Influence of time on metamorphism of sedimentary organic matter in liquid-dominated geothermal systems, western North America
C.E. Barker
1983, Geology (11) 384-388
Temperature (T in °C) and mean vitrinite reflectance (Rm in %) of sedimentary organic matter samples from six liquid-dominated geothermal systems plot about a line approximated by a regression equation of the form Rm = 0.435 exp 0.00683T. The reflectance data from these systems are strongly temperature-dependent,...
Improper use of regression equations in earth sciences
G. P. Williams
1983, Geology (11) 195-197
A regression equation used to estimate a variable is appropriately used only to estimate the dependent variable of that equation; the equation is inappropriately used when solved for an independent variable. Examples given here of this misuse of regression equations are based on...
Liquefaction sites, Imperial Valley, California.
T. L. Youd, M.J. Bennett
1983, Journal of Geotechnical Engineering (109) 440-457
Sands that did and did not liquefy at two sites during the 1979 Imperial Valley, Calif., earthquake (ML = 6.6) are identified and their properties evaluated. SPT tests were used to evaluate liquefaction susceptibility. Loose fine sands in an abandoned channel liquefied and produced sand boils, ground fissures, and a...
Seasat synthetic aperture radar ( SAR) response to lowland vegetation types in eastern Maryland and Virginia
M. D. Krohn, N.M. Milton, D. B. Segal
1983, Journal of Geophysical Research - Oceans (88) 1937-1952
Examination of SEASAT SAR images of eastern Maryland and Virginia reveals botanical distinctions between vegetated lowland areas and adjacent upland areas. Radar returns from the lowland areas can be either brighter or darker than returns from the upland forests. Scattering models and scatterometer measurements predict an increase of 6 dB...
Geochemistry of diverse basalt types from Loihi Seamount, Hawaii: Petrogenetic implications
F.A. Frey, D.A. Clague
1983, Earth and Planetary Science Letters (66) 337-355
The wide variety of basalt types, tholeiitic to basanite, dredged from Loihi Seamount have minor and trace element abundances that are characteristic of subaerial Hawaiian basalts, thereby confirming that Loihi Seamount is a manifestation of the Hawaiian “hot spot”. Within the Loihi sample suite there are well-defined positive correlations among...
Mapping of hydrothermally altered rocks using airborne multispectral scanner data, Marysvale, Utah, mining district
M. H. Podwysocki, D. B. Segal, O. D. Jones
1983, Advances in Space Research (3) 101-112
Multispectral data covering an area near Marysvale, Utah, collected with the airborne National Aeronautics and Space Administration (NASA) 24-channel Bendix multispectral scanner, were analyzed to detect areas of hydrothermally altered, potentially mineralized rocks. Spectral bands were selected for analysis that approximate those of the Landsat 4 Thematic Mapper and which...
Ultrastructural changes in the hepatocytes of juvenile rainbow trout and mature brown trout exposed to copper or zinc
H.V. Leland
1983, Environmental Toxicology and Chemistry (2) 353-368
Morphological changes in hepatocytes of mature brown trout (Salmo trutta Linnaeus) and juvenile rainbow trout (Salmo gairdneri Richardson), accompanying chronic exposures to copper and zinc, were examined by transmission electron microscopy. At a concentration of copper not inhibitory to the final stages of gonadal development or spawning of brown trout,...
Geobarometry of ultramafic xenoliths from Loihi Seamount, Hawaii, on the basis of CO2 inclusions in olivine
E. Roedder
1983, Earth and Planetary Science Letters (66) 369-379
Abundant fluid inclusions in olivine of dunite xenoliths (∼1–3 cm) in basalt dredged from the young Loihi Seamount, 30 km southeast of Hawaii, are evidence for three coexisting immiscible fluid phases—silicate melt (now glass), sulfide melt (now solid), and dense supercritical CO2 (now liquid + gas)—during growth and later fracturing of some of...
Evidence for earlier date of Ubeidiya, Israel hominid site (reply)
C.A. Repenning
1983, Nature (304) 375-376
[No abstract available]...
DIGITAL CARTOGRAPHY AIDS IN THE SOLUTION OF BOUNDARY DISPUTE.
Francis J. Beck
1983, Conference Paper, Technical Papers of the American Congress of Surveying and Mapping
The boundary between the States of Ohio and Kentucky and Indiana and Kentucky has been in dispute for many years. A major breakthrough in this continuing dispute has been a recent agreement between the States to accept the boundary line as depicted on U. S. Geological Survey 7. 5-minute quadrangle...
The mobility and distribution of heavy metals during the formation of first cycle red beds
R. A. Zielinski, S. Bloch, T.R. Walker
1983, Economic Geology (78) 1574-1589
Holocene-Pliocene sequence sampled in northern Baja California. Geochemical data supported by petrographic, X-ray, and SEM observations of mineralogical transformations, fission-track radiography, and uranium decay series measurements. Results indicate that metal content of the studied samples is inherited from constituent detrital minerals and that reddening of whole-rock samples does not promote...
