A geochemical study of macerals from a Miocene lignite and an Eocene bituminous coal, Indonesia
B.A. Stankiewicz, M.A. Kruge, Maria Mastalerz
1996, Organic Geochemistry (24) 531-545
Optical and chemical studies of maceral concentrates from a Miocene lignite and an Eocene high-volatile bituminous C coal from southeastern Kalimantan, Indonesia were undertaken using pyro-Lysis, optical, electron microprobe and FTIR techniques Pyrolysis products of vitrinite from bituminous coal were dominated by straight-chain aliphatics and phenols. The huminite of the...
Resource issues addressed by case studies of sustained research in national parks
Gary E. Davis, William L. Halvorson
W. L. Halvorson, G.E. Davis, editor(s)
1996, Book chapter, Science and ecosystem management in the national parks
No abstract available....
Genetic characteristics of fluid inclusions in sphalerite from the Silesian-Cracow ores, Poland
A. Kozlowski, D. L. Leach, J.G. Viets
1996, Prace - Panstwowego Instytutu Geologicznego (154) 72-84
Fluid inclusion studies in sphalerite from early-stage Zn-Pb mineralization in the Silesian-Cracow region (southern Poland), yielded homogenization temperatures (Th) from 80 to 158??C. Vertical thermal gradient of the parent fluids was 6 to 10??C, and the ore crystallization temperature ranges varied from <10??C at deep levels to 25??C at shallow...
Geology and structural evolution of the Muruntau gold deposit, Kyzylkum desert, Uzbekistan
L.J. Drew, B. R. Berger, N.K. Kurbanov
1996, Ore Geology Reviews (11) 175-196
The Muruntau gold deposit in the Kyzylkum desert of Uzbekistan is the largest single deposit (??? 1100 tonnes of gold) of the class of low-sulfide syndeformation/synigenous gold deposits formed in the brittle/ductile transition zone of the crust within transpressional shear zones. Hosted by the Cambrian to Ordovician Besopan Suite, the...
Late Quaternary variations in relative sea level due to glacial cycle polar wander
B.G. Bills, T.S. James
1996, Geophysical Research Letters (23) 3023-3026
Growth and decay of continental ice sheets can excite significant motion of the Earth's rotation pole and cause a complex spatio-temporal pattern of changes in relative sea level. These two effects have generally been considered separately, but may interact in important ways. In particular, a simple...
Changes in landscape values and expectations: What do we want and how do we measure it?
W. L. Halvorson
G. Wright, editor(s)
1996, Book chapter, National parks and protected areas: Their role in environmental protection.
No abstract available....
The geologic story of the Ocoee River : see the river -- see the rapids -- see the rocks!
Water Resources Division, U.S. Geological Survey, U.S. Forest Service, Tennessee River Valley Authority
1996, Report
Rupture distribution of the 1977 western Argentina earthquake
C.J. Langer, S. Hartzell
1996, Physics of the Earth and Planetary Interiors (94) 121-132
Teleseismic P and SH body waves are used in a finite-fault, waveform inversion for the rupture history of the 23 November 1977 western Argentina earthquake. This double event consists of a smaller foreshock (M0 = 5.3 ?? 1026 dyn-cm) followed about 20 s later by a larger main shock (M0...
Artificial wetlands to augment use by estuarine birds
Joy B. Zedler, Barbara E. Kus
1996, California Sea Grant Publication T-038-5.3
The value of natural wetlands to bird populations is well-recognized, and declines in waterfowl numbers are often attributed to losses in wetland area. if the destruction of wetland reduces bird populations, then adding wetland habitats might improve the situation. This idea was tested in Tijuana Estuary in the late 1980s.<br...
Lista de anfibios y reptiles del Museo Nacional de Historia Natural del Paraguay (marzo, 1980-setiembre 1995)
A.L. Aquino, N.J. Scott, M. Motte
1996, Ministerio de Agricultura y Ganaderia, MNHNP, Colecciones de fauna y flora del Museo Nacional de Historia Natural del Paraguay 331-400
No abstract available at this time...
Hawaii scientific drilling protect: Summary of preliminary results
D. DePaolo, E. Stolper, D. Thomas, F. Albarede, O. Chadwick, D. Clague, M. Feigenson, F. Frey, M. Garcia, A. Hofmann, B.L. Ingram, B. M. Kennedy, J. Kirschvink, M. Kurz, Carlo Laj, J. Lockwood, K. Ludwig, T. McEvilly, R. Moberly, G. Moore, Jeff Moore, R. Morin, F. Paillet, P. Renne, M. Rhodes, M. Tatsumoto, H. Taylor, G. Walker, R. Wilkins
1996, GSA Today (6) 1-9
Petrological, geochemical, geomagnetic, and volcanological characterization of the recovered core from a 1056-m-deep well into the flank of the Mauna Kea volcano in Hilo, Hawaii, and downhole logging and fluid sampling have provided a unique view of the evolution and internal structure of a major oceanic volcano unavailable from surface...
Hydrogeology of the Hawaii Scientific Drilling Project borehole KP-1 1. Hydraulic conditions adjacent to the well bore
Frederick L. Paillet, D. M. Thomas
1996, Journal of Geophysical Research B: Solid Earth (101) 11675-11682
Temperature and formation resistivity logs obtained in borehole KP-1 of the Hawaii Scientific Drilling Project indicate that the adjacent formation is characterized by several zones of distinctly different average temperature and water salinity. A series of hydraulic analyses and water sampling programs were conducted to rule out the possibility of...
Uranium-series dating of carbonate (tufa) deposits associated with quaternary fluctuations of Pyramid Lake, Nevada
Barney J. Szabo, C. A. Bush, L. V. Benson
1996, Quaternary Research (45) 271-281
Uranium-series dating of dense tufa deposited in a small cave, at former lake margins, and in large tufa mounds clarifies the timing of lake-level variation during the past 400,000 yr in the Pyramid Lake basin. A moderate-sized lake occasionally overflowed the Emerson Pass sill at elevation of ???1207 m between...
Waters associated with an active basaltic volcano, Kilauea, Hawaii: Variation in solute sources, 1973-1991
R.I. Tilling, B.F. Jones
1996, Geological Society of America Bulletin (108) 562-577
Chemical and isotopic analyses of samples collected from a December 1962-m-deep research borehole at the summit of Kilauea Volcano provide unique time-series data for composition of waters in the uppermost part of its hydrothermal system. These waters have a distinctive geochemical signature: a very low proportion of chloride relative to...
Lithologic analysis from multispectral thermal infrared data of the alkalic rock complex at Iron Hill, Colorado
K. Watson, L. C. Rowan, T. L. Bowers, C. Anton-Pacheco, P. Gumiel, S.H. Miller
1996, Geophysics (61) 706-721
Airborne thermal-infrared multispectral scanner (TIMS) data of the Iron Hill carbonatite-alkalic igneous rock complex in south-central Colorado are analyzed using a new spectral emissivity ratio algorithm and confirmed by field examination using existing 1:24 000-scale geologic maps and petrographic studies. Color composite images show that the alkalic rocks could be...
What makes a hydropower negotiation successful?
J. G. Taylor, B. L. Lamb, N. Burkardt, S. Flick
1996, Hydro Review (15) 66-71
No abstract available....
Sediment inflow to the delta from the Sacramento and San Joaquin Rivers
R.N. Oltmann
1996, Interagency Ecological Program Newsletter (9) 22-23
USGS routinely measures the daily suspended sediment load entering the delta with the flows of the Sacramento and San Joaquin rivers. Most of the suspended sediment that flows into the delta is carried by these two rivers, but it also enters from Yolo Bypass; the Mokelumne, Calaveras, and Cosumnes rivers;...
Activity rhythm and home range of alpine weasel
Wei Wanhong, Zhou Wenyang, Naichang Fan, Dean E. Biggins
1996, Acta Theriologica Sinica (16) 35-42
The activity rhthms and home ranges of alpine weasels were studied by telemetric techniques in 1990 at YUER mountain near Haibei Research Station of Alpine Meadow Ecosystem.The main activities of alpine weasels were as follows: play, self-groom, sunbath, explore, fecd, and activities of alpine weasels were as follows: play, self-groom,...
Commercial mussels of Alabama
M. A. McGregor, J.T. Garner, Z.H. Bowen
1996, Book
No abstract available....
In the shadow of 1857-the effect of the great Ft. Tejon earthquake on subsequent earthquakes in southern California
R.A. Harris, R.W. Simpson
1996, Geophysical Research Letters (23) 229-232
The great 1857 Fort Tejon earthquake is the largest earthquake to have hit southern California during the historic period. We investigated if seismicity patterns following 1857 could be due to static stress changes generated by the 1857 earthquake. When post-1857 earthquakes with unknown focal mechanisms were...
Reactive solute transport in streams: 1. Development of an equilibrium- based model
Robert L. Runkel, Kenneth E. Bencala, Robert E. Broshears, Steven C. Chapra
1996, Water Resources Research (32) 409-418
An equilibrium-based solute transport model is developed for the simulation of trace metal fate and transport in streams. The model is formed by coupling a solute transport model with a chemical equilibrium submodel based on MINTEQ. The solute transport model considers the physical processes of advection, dispersion, lateral inflow, and...
Thermal and unroofing history of a thick, tilted Basin-and-Range crustal section in the Tortilla Mountains, Arizona
K. A. Howard, D.A. Foster
1996, Journal of Geophysical Research B: Solid Earth (101) 511-522
We estimate here a geothermal gradient of only 17 ± 5°C km−1 for the tilted Grayback fault block in southeastern Arizona when extension began ∼25 Ma. This gradient is lower than preextension gradients estimated elsewhere in the Basin and Range, is only about 50% of typical gradients in the Basin and...
Earthquake site response in Santa Cruz, California
D. Carver, S.H. Hartzell
1996, Bulletin of the Seismological Society of America (86) 55-65
Aftershocks of the 1989 Loma Prieta, California, earthquake are used to estimate site response in a 12-km2 area centered on downtown Santa Cruz. A total of 258 S-wave records from 36 aftershocks recorded at 33 sites are used in a linear inversion for site-response spectra. The inversion scheme takes advantage of the...
Anaerobic hydrocarbon degradation in petroleum-contaminated harbor sediments under sulfate-reducing and artificially imposed iron-reducing conditions
J.D. Coates, R. T. Anderson, J.C. Woodward, Elizabeth J.P. Phillips, Derek R. Lovley
1996, Environmental Science & Technology (30) 2784-2789
The potential use of iron(III) oxide to stimulate in-situ hydrocarbon degradation in anaerobic petroleum-contaminated harbor sediments was investigated. Previous studies have indicated that Fe(III)-reducing bacteria (FeRB) can oxidize some electron donors more effectively than sulfate- reducing bacteria (SRB). In contrast to previous results in freshwater sediments, the addition of Fe(III)...
A comparison of vitrinite reflectance measurements made on whole-rock and dispersed organic matter concentrate mounts
C.E. Barker
1996, Conference Paper, Organic Geochemistry
A comparison of mean-random vitrinite reflectance (R(v-r)) values calculated from measurements on polished whole-rock and on concentrates of dispersed organic matter (DOM) mounts of the same samples generally show little difference. Compared to measurements on DOM mounts, R(v-r) measurements by the same microscopist on corresponding whole-rock samples are up to...
