Evaluation of metal ion absorptive characteristics of three types of plastic sample bags used for pecipitation sampling
A.B. Good, L.J. Schroder
1984, Journal of Environmental Science and Health - Part A Environmental Science and Engineering (19) 631-640
Simulated precipitation samples containing 16 metal ions were prepared at 4 pH values. Absorptive characteristics of polypropylene, polyethylene, and polyester/polyolefin sacks were evaluated at pH 3.5, 4.0, 4.5, and 5.0. Simulated precipitation was in contact with the sacks for 17 days, and subsamples were removed for chemical analysis at 3,...
Creep behavior of submarine sediments
Armand J. Silva, J.S. Booth
1984, Geo-Marine Letters (4) 215-219
A series of experiments on drained creep of marine sediment indicates that strength degradation results from the creep process, which implies an associated reduction in slope stability. Furthermore, the highest creep potential of a sediment may be at its preconsolidation stress. Results from the experiments on samples from Georges Bank...
Lu-Hf and Sm-Nd evolution in lunar mare basalts
D.M. Unruh, P. Stille, P. J. Patchett, M. Tatsumoto
1984, Journal of Geophysical Research Solid Earth (89) B459-B477
Lu-Hf and Sm-Nd data for mare basalts combined with Rb-Sr and total REE data taken from the literature suggest that the mare basalts were derived by small (≤10%) degrees of partial melting of cumulate sources, but that the magma ocean from which these sources formed was light REE and Hf-enriched....
Fluid heterogeneity during granulite facies metamorphism in the Adirondacks: stable isotope evidence
J.W. Valley, J. R. O’Neil
1984, Contributions to Mineralogy and Petrology (85) 158-173
The preservation of premetamorphic, whole-rock oxygen isotope ratios in Adirondack metasediments shows that neither these rocks nor adjacent anorthosites and gneisses have been penetrated by large amounts of externally derived, hot CO2-H2O fluids during granulite facies metamorphism. This conclusion is supported by calculations of the effect of fluid volatilization and...
Archaeological sedimentology of overbank silt deposits on the floodplain of the Ohio River near Louisville, Kentucky
H.H. Gray
1984, Journal of Archaeological Science (11) 421-432
The surface of the floodplain of the Ohio River about 20km southwest of Louisville, Kentucky, is a series of linear ridges and swales that are subparallel to the channel of the river, which here is relatively straight and flows southward. Numerous prehistoric occupational sites are located on these ridges. The...
Lu-Hf constraints on the evolution of lunar basalts
Hirokazu Fujimaki, Mistunobu Tatsumoto
1984, Journal of Geophysical Research Solid Earth (89) B445-B458
Very low Ti basalts and green glass samples from the moon show high Lu/Hf ratios and low Hf concentrations. Low-Ti lunar basalts show high and variable Lu/Hf ratios and higher Hf concentrations, whereas high-Ti lunar basalts show low Lu/Hf ratios and high Hf concentrations. KREEP basalts have constant Lu/Hf ratios...
MUNSELL COLOR ANALYSIS OF LANDSAT COLOR-RATIO-COMPOSITE IMAGES OF LIMONITIC AREAS IN SOUTHWEST NEW MEXICO.
Fred A. Kruse
1984, Conference Paper
Green areas on Landsat 4/5 - 4/6 - 6/7 (red - blue - green) color-ratio-composite (CRC) images represent limonite on the ground. Color variation on such images was analyzed to determine the causes of the color differences within and between the green areas. Digital transformation of the CRC data into...
Peralkaline ash flow tuffs and calderas of the McDermitt Volcanic Field, southeast Oregon and north central Nevada
J. J. Rytuba, E.H. McKee
1984, Journal of Geophysical Research Solid Earth (89) 8616-8628
The McDermitt volcanic field covers an area of 20,000 km2 in southeastern Oregon and northwestern Nevada and consists of seven large-volume ash flow sheets that vented from 16.1 to 15 Ma ago. The volcanic field is characterized by peralkaline, high-silica rhyolite, and all but one of the sheets are comendites. The...
The isotope systematics of a juvenile intraplate volcano: Pb, Nd, and Sr isotope ratios of basalts from Loihi Seamount, Hawaii
H. Staudigel, A. Zindler, S.R. Hart, T. Leslie, C.-Y. Chen, D. Clague
1984, Earth and Planetary Science Letters (69) 13-29
Sr, Nd, and Pb isotope ratios for a representative suite of 15 basanites, alkali basalts, transitional basalts and tholeiites from Loihi Seamount, Hawaii, display unusually large variations for a single volcano, but lie within known ranges for Hawaiian basalts. Nd isotope...
Post-fire recovery of California coastal sage scrub
Jon E. Keeley, Sterling C. Keeley
1984, American Midland Naturalist (111) 105-117
Postfire regeneration of the shrub and herb vegetation on eight coastal slopes of California coastal sage scrub was studied in the first two growing seasons after fire. All shrub species resprouted with the exception of the suffrutescent Lotus scoparius, though it is not known if this species was alive prior...
Bonded-phase extraction column isolation of organic compounds in groundwater at a hazardous waste site
C.E. Rostad, W. E. Pereira, S.M. Ratcliff
1984, Analytical Chemistry (56) 2856-2860
A procedure for isolation of hazardous organic compounds from water for gas chromatography/mass spectrometry analysis Is presented and applied to creosote- and pentachlorophenol-contaminated groundwater resulting from wood-treatment processes. This simple procedure involved passing a 50-100-mL sample through a bonded-phase extraction column, eluting the trapped organic compounds from the column with...
Geographic distribution: Rana muscosa (mountain yellow-legged frog)
M.R. Jennings
1984, Herpetological Review (15) 52
Longevity records for lizards of the family Helodermatidae
M.R. Jennings
1984, Bulletin of the Maryland Herpetological Society (20) 22-23
POTENTIAL FOR NITROSAMINE FORMATION RESULTING FROM THE USE OF RHODAMINE WT FOR TIME-OF-TRAVEL STUDIES: A COMBINED LABORATORY AND FIELD INVESTIGATION.
Sharon M. Johnson, Thomas R. Steinheimer
1984, Conference Paper, National Meeting - American Chemical Society, Division of Environmental Chemistry
Rhodamine WT is used by surface water hydrologists for time of travel and dispersion studies in which flow characteristics of surface streams are determined. Surface water contamination by nitrosamines formed from Rhodamine WT and nitrite ion has been studied. A method for residue analysis of N-nitrosodiethylamine (NDEA) has been developed...
Factors determining desert dune type
D. M. Rubin
1984, Nature (309) 91-92
[No abstract available]...
Intertidal community structure in central and southern California: the interaction between human disturbance, bird predation and limpet territoriality
D. R. Lindberg, J. A. Estes, K.I. Warheit
1984, American Malacological Bulletin (2) 80
Stable isotope compositions of gases and vegetation near naturally burning coal
J.D. Gleason, T.K. Kyser
1984, Nature (307) 254-257
Our measurements of stable isotope compositions of CO2 issuing from vents produced by naturally burning coal indicate that the coal is oxidized through a kinetic process in which groundwater is the oxidizing agent. The CO2 produced by the oxidation of the coal is extremely depleted in 13C relative to normal...
Magmatic inclusions in rhyolites, contaminated basalts, and compositional zonation beneath the Coso volcanic field, California
C. R. Bacon, J. Metz
1984, Contributions to Mineralogy and Petrology (85) 346-365
Basaltic lava flows and high-silica rhyolite domes form the Pleistocene part of the Coso volcanic field in southeastern California. The distribution of vents maps the areal zonation inferred for the upper parts of the Coso magmatic system. Subalkalic basalts (<50% SiO2) were erupted well away from the rhyolite field...
Periodic jökulhlaups from Pleistocene glacial Lake Missoula-New evidence from varved sediment in northern Idaho and Washington
Richard B. Waitt
1984, Quaternary Research (22) 46-58
Newly examined exposures in northern Idaho and Washington show that catastrophic floods from glacial Lake Missoula during late Wisconsin time were repeated, brief jökulhlaups separated by decades of quiet glaciolacustrine and subaerial conditions. Glacial Priest Lake, dammed in the Priest River valley by a tongue of the Purcell trench lobe...
Ferromanganese crust resources in the Pacific and Atlantic Oceans
R.F. Commeau, A. Clark, Chad Johnson, F.T. Manheim, P. J. Aruscavage, C.M. Lane
1984, Conference Paper, Oceans '84 : Conference record : Industry, government, education - Designs for the future
Ferromanganese crusts on raised areas of the ocean floor have joined abyssal manganese nodules and hydrothermal sulfides as potential marine resources. Significant volumes of cobalt-rich (about 1% Co) crusts have been identified to date within the US Exclusive Economic Zone (EEZ) in the Central Pacific: in the NW Hawaiian Ridge...
Chemical determination of particulate nitrogen in San Francisco Bay. A comparison of two estimates
S.W. Hager, D.D. Harmon
1984, Estuarine, Coastal and Shelf Science (19) 181-191
Particulate nitrogen was measured by both the ultra-violet light-catalyzed peroxide method and the high temperature combustion method. The difference between values obtained with the two methods (combustion minus UV) was found to be linearly correlated with the concentration of total suspended particulate matter (SPM) in the sample. The slope of...
Photogrammetric camera calibration
W.P. Tayman, H. Ziemann
1984, Photogrammetria (39) 31-53
Section 2 (Calibration) of the document "Recommended Procedures for Calibrating Photogrammetric Cameras and Related Optical Tests" from the International Archives of Photogrammetry, Vol. XIII, Part 4, is reviewed in the light of recent practical work, and suggestions for changes are made. These suggestions are intended as a basis for a...
ALGORITHM DEVELOPMENT FOR SPATIAL OPERATORS.
Robert W. Claire
1984, Conference Paper
An approach is given that develops spatial operators about the basic geometric elements common to spatial data structures. In this fashion, a single set of spatial operators may be accessed by any system that reduces its operands to such basic generic representations. Algorithms based on this premise have been formulated...
Oxidation state of marine manganese nodules
D.Z. Piper, J.R. Basler, J. L. Bischoff
1984, Geochimica et Cosmochimica Acta (48) 2347-2355
Analyses of the bulk oxidation state of marine manganese nodules indicates that more than 98% of the Mn in deep ocean nodules is present as Mn(IV). The samples were collected from three quite different areas: the hemipelagic environment of the Guatemala Basin, the pelagic area of the North Pacific, and...
KONOCTI BAY FAULT ZONE, LAKE COUNTY, CALIFORNIA: A REEVALUATION.
J. Michael Thompson
1984, Conference Paper, Transactions - Geothermal Resources Council
The Konocti Bay Fault Zone (KBFZ), initially regarded by some as a promising liquid-dominated hydrothermal system, has been a disappointment as a geothermal prospect. Five exploratory wells have been drilled in the vicinity of the KBFZ, but none of them are producing thermal fluids; in fact, three have been abandoned....
