An antigenic comparison between infectious hematopoietic necrosis virus (OSV strain) and the virus of haemorrhagic septicaemia of rainbow trout (Salmo gairdneri) (Denmark strain) by cross neutralization
P. E. McAllister, J. L. Fryer, K.S. Pilcher
1974, Journal of Wildlife Diseases (10) 101-103
The infectious hematopoietic necrosis virus (OSV strain) and the virus of haemorrhagic septicaemia of rainbow trout (Salmo gairdneri) (Denmark strain) were examined for possible antigenic relationship by plaque neutralization using homologous and heterologous antisera. No neutralization of either virus was observed on exposure to heterologous antiserum. This indicates that there...
Fish sporozoa: Extraction of antigens from Myxosoma cerebralis spores which mimic tissue antigens of rainbow trout (Salmo gairdneri)
G.B. Pauley
1974, Journal of the Fisheries Research Board of Canada (31) 1481-1484
This is the first report of an antigenic preparation from the spore stage of any histozoic sporozoan parasite. The method for successful extraction of the antigens is presented. This antigenic preparation is active in rabbits, but not salmonid fish. The detection of asymptomatic carrier fish using the spore antigens was...
Episodic Cenozoic volcanism and tectonism in the Andes of Peru
D. C. Noble, E.H. McKee, E. Farrar, U. Petersen
1974, Earth and Planetary Science Letters (21) 213-220
Radiometric and geologic information indicate a complex history of Cenozoic volcanism and tectonism in the central Andes. K-Ar ages on silicic pyroclastic rocks demonstrate major volcanic activity in central and southern Peru, northern Chile, and adjacent areas during the Early and Middle...
Water quality effects of seepage from earthen dams
C. Yost Jr., J.W. Naney
1974, Journal of Hydrology (21) 15-26
Analyses of surface and seepage waters from selected floodwater retarding structures in west-central Oklahoma, U.S.A. show the salinity of seepage to be several times greater than that of the impounded waters. The increases in concentration of the several chemical components are not proportional....
The regolith at the Apollo 15 site and its stratigraphic implications
M. H. Carr, C.E. Meyer
1974, Geochimica et Cosmochimica Acta (38) 1183-1197
Regolith samples from the Apollo 15 landing site are described in terms of two major fractions, a homogeneous glass fraction and a non-homogeneous glass fraction. The proportions of different components in the homogeneous glass fraction were determined directly by chemical analyses of individual...
Iridium in some calcic and calc-alkalic batholithic rocks of the western United States
L. P. Greenland, D. Gottfried, R.I. Tilling
1974, Chemical Geology (14) 117-122
Neutron-activation determinations of Ir in rocks of the Southern California and Boulder (Montana) batholiths show that the Ir content is low and variable in both batholiths, extending over 1 to 2 orders of magnitude and having a combined median of 0.006 ppb...
Interlamellar adsorption of carbon dioxide by smectites
J.J. Fripiat, M.I. Cruz, B.F. Bohor, J. Thomas Jr.
1974, Clays and Clay Minerals (22) 23-30
The adsorption of CO2 at low temperature (∼ −70°C) on thin films of homoionic smectites was studied by X-ray diffraction and by i.r. absorption. An increase in the d001 spacings of these clay films upon adsorption of CO2 was observed. In addition, a dichroic effect was readily discernible by comparing the i.r. spectra at...
Martian volcanism: Additional observations and evidence for pyroclastic activity
M. West
1974, Icarus (21) 1-11
Inspection of the Mariner 9 B-camera (resolution 100–200m) and A-camera (resolution 1–2km) photographs of Mars reveals numerous analogs of terrestrial and lunar volcanic features. In addition to the exceptionally large constructional features in the Tharsis region, many other large and small landforms present...
A solvent extraction study of molybdenum chloride and molybdenum thiocyanate complexes
L. P. Greenland, E.G. Lillie
1974, Analytica Chimica Acta (69) 335-346
The effect of reducing agents on molybdenum(VI) solutions in hydrochloric acid was studied by a solvent extraction technique to elucidate the composition of the colored molybdenum thiocyanate complex. Neither copper(I) chloride nor ascorbic acid have any effect on the extraction of MoO2Cl2; it is inferred...
Craters on Earth, Moon, and Mars: Multivariate classification and mode of origin
R.J. Pike
1974, Earth and Planetary Science Letters (22) 245-255
Testing extraterrestrial craters and candidate terrestrial analogs for morphologic similitude is treated as a problem in numerical taxonomy. According to a principal-components solution and a cluster analysis, 402 representative craters on the Earth, the Moon, and Mars divide into two major classes...
Spectrophotometric determination of molybdenum in rocks with thiocyanate
E.G. Lillie, L. P. Greenland
1974, Analytica Chimica Acta (69) 313-320
A rapid procedure for the determination of microgram amounts of molybdenum in rocks is described. After acid decomposition, molybdenum is extracted from a hydrochloric acid solution into xylene with tributyl phosphate. After back-extraction with water, molybdenum is extracted as the α-benzoinoximate into chloroform, stripped into...
Argillization by descending acid at Steamboat Springs, Nevada
Robert Schoen, Donald E. White, J.J. Hemley
1974, Clays and Clay Minerals (22) 1-22
Steamboat Springs, Nevada, an area of present-day hot springs, clearly illustrates the genetic dependence of some kaolin deposits on hot-spring activity. Andesite, granodiorite and arkosic sediments are locally altered at the land surface to siliceous residues consisting of primary quartz and anatase, plus opal from primary silicates. These siliceous residues...
U-Th-Pb and Rb-Sr systematics of Apollo 17 boulder 7 from the North Massif of the Taurus-Littrow Valley
P.D. Nunes, M. Tatsumoto, D.M. Unruh
1974, Earth and Planetary Science Letters (23) 445-452
Portions of highland breccia boulder 7 collected during the Apollo 17 mission were studied using UThPb and RbSr systematics. A RbSr internal isochron age of3.89 ± 0.08b.y. with an initial87Sr/86Sr of0.69926 ± 0.00008 was obtained for...
Osmium, ruthenium, iridium and uranium in silicates and chromite from the eastern Bushveld Complex, South Africa
R.h. Gijbels, Hugh T. Millard Jr., G. A. Desborough, A.J. Bartel
1974, Geochimica et Cosmochimica Acta (38) 319-337
Osmium, ruthenium, iridium and uranium contents were determined in eight ortho pyroxene, seven plagioclase, and three chromite mineral separates from the eastern Bushveld Complex. Neutron activation analysis was used to measure the platinum metals, and uranium was determined by a fission track technique....
Geophysical evidence for the intersection of the St Paul, Cape Palmas and Grand Cess fracture zones with the continental margin of Liberia, West Africa
John C. Behrendt, J. Schlee, James M. Robb
1974, Nature (248) 324-326
PUBLISHED reconstructions of Gondwana continent1 (Fig. la) show a gap in fit near the junction of the Americas and Africa. To study this critical area, the Unitedgeo I made geophysical measurements and collected rock samples across the continental margin of Liberia (USGS-IDOE cruise leg 5) in November...
Ejecta from large craters on the Moon: Comments on the geometric model of McGetchin et al.
R.J. Pike
1974, Earth and Planetary Science Letters (23) 265-271
Amendments to a quantitative scheme developed by T.R. McGetchin et al. (1973) for predicting the distribution of ejecta from lunar basins yield substantially thicker estimates of ejecta, deposited at the basin rim-crest and at varying ranges byond, than does the original model....
Preliminary petrographic description and geologic implications of the Apollo 17 Station 7 boulder consortium samples
E. C. T. Chao, J.A. Minkin, C.L. Thompson
1974, Earth and Planetary Science Letters (23) 413-428
Preliminary petrographic description and mineral composition of four hand samples (77135, 77115, 77075 and 77215) are presented. 77135, 77115, and 77075 all crystallized from fragment-laden melts; they are similar in textures but differ in grain size. 77135 and 77115 are pigeonite feldspathic...
Naturally occurring vapor-liquid-solid (VLS) Whisker growth of germanium sulfide
R. B. Finkelman, R.R. Larson, E.J. Dwornik
1974, Journal of Crystal Growth (22) 159-160
The first naturally occurring terrestrial example of vapor-liquid-solid (VLS) growth has been observed in condensates from gases released by burning coal in culm banks. Scanning electron microscopy, X-ray diffraction, and energy dispersive analysis indicate that the crystals consist of elongated rods (≈ 100...
Antiferromagnetic inclusions in lunar glass
A. N. Thorpe, F. E. Senftle, Charles Briggs, Corrine Alexander
1974, Earth and Planetary Science Letters (22) 85-90
The magnetic susceptibility of 11 glass spherules from the Apollo 15, 16, and 17 fines and two specimens of a relatively large glass spherical shell were studied as a function of temperature from room temperature to liquid helium temperatures. All but one...
Martian planetwide crater distributions: Implications for geologic history and surface processes
L.A. Soderblom, C.D. Condit, R.A. West, B.M. Herman, T. J. Kreidler
1974, Icarus (22) 239-263
Population-density maps of craters in three size ranges (0.6 to 1.2 km, 4 to 10 km, and >20 km in diameter) were compiled for most of Mars from Mariner 9 imagery. These data provide: historical records of the eolian processes (0.6 to 1.2 km craters); stratigraphic, relative, and absolute timescales...
Movement of elements into the atmosphere from coniferous trees in subalpine forests of Colorado and Idaho
G.C. Curtin, H. D. King, E. L. Mosier
1974, Journal of Geochemical Exploration (3) 245-263
Exudates from conifer trees, presumably consisting largely of volatile materials, were sampled at 19 subalpine localitites in Colorado and Idaho where anomalous amounts of several metals were determined in vegetation and mull during previous geochemical testing. The trees sampled were lodgepole pine...
Oil shale development and its environmental considerations
R.T. Stone, H. Johnson, A. Decora
1974, Conference Paper, Preprints
The petroleum shortage recently experienced by many nations throughout the world has created an intense interest in obtaining new and supplemental energy sources. In the United States, this interest has been centered on oil shale. Any major action by the federal government having significant environmental effects requires compliance with the...
Problems encountered in the use of neutron methods for elemental analysis on planetary surfaces
F. Senftle, P. Philbin, R. Moxham, G. Boynton, J. Trombka
1974, Nuclear Instruments and Methods (117) 435-443
From experimental studies of gamma rays from fast and thermal neutron reactions in hydrogeneous and non-hydrogeneous, semi-infinite samples and from Monte Carlo calculations on soil of a composition which might typically be encountered on planetary surfaces, it is found that gamma rays from...
Comparison of elemental accumulation rates between ferromanganese deposits and sediments in the South Pacific Ocean
T. Kraemer, J.C. Schornick
1974, Chemical Geology (13) 187-196
Rates of accumulation of Fe and Mn, as well as Cu, Ni, Co, Pb, Zn, Hg, U and Th have been determined for five ferromanganese deposits from four localities in the South Pacific Ocean.Manganese is accumulating in nodules and crusts at a rate roughly equivalent to that found...
The role of lava erosion in the formation of lunar rilles and Martian channels
M. H. Carr
1974, Icarus (22) 1-23
Lava tubes and channels develop around active sources of low viscosity lava. The channels normally form without erosion; however, sustained flow can result in the incision of a lava channel and simulation of fluvial erosion features. Lava erosion by means of thermal incision...
