Cliftonite: A proposed origin, and its bearing on the origin of diamonds in meteorites
R. Brett, G.T. Higgins
1969, Geochimica et Cosmochimica Acta (33)
Cliftonite, a polycrystalline aggregate of graphite with spherulitic structure and cubic morphology, is known in 14 meteorites. Some workers have considered it to be a pseudomorph after diamond, and have used the proposed diamond ancestry as evidence of a meteoritic parent body of at least lunar dimensions. Careful examination of...
Thermochemical study of the system Fe-As-S
P. B. Barton Jr.
1969, Geochimica et Cosmochimica Acta (33) 841-857
The results of Toulmin and Barton (1964) for the Fe-S system have been combined with a series of new measurements on As-bearing assemblages in the 500°–850°C temperature range to derive data on the free energies, enthalpies, and entropies of formation for arsenopyrite, loellingite, orpiment, realgar,...
Lead isotopes in volcanic rocks and possible ocean-floor thrusting beneath island arcs
M. Tatsumoto
1969, Earth and Planetary Science Letters (6) 369-376
The isotopic composition of lead in the Japanese primary basalts gradually decreases in radiogenic character in a transverse from the Pacific Ocean side to the Japan Sea side, whereas the observed 238U204Pb">238U204Pb and 232Th204Pb">232Th204Pb ratios...
Chemical composition of selected Kansas brines as an aid to interpreting change in water chemistry with depth
R.J. Dingman, E.E. Angino
1969, Chemical Geology (4) 325-339
Chemical analyses of approximately 1,881 samples of water from selected Kansas brines define the variations of water chemistry with depth and aquifer age. The most concentrated brines are found in the Permian rocks which occupy the intermediate section of the geologic column of this area. Salinity decreases below the...
Lithium and potassium absorption, dehydroxylation temperature, and structural water content of aluminous smectites
Leonard Gene Schultz
1969, Clays and Clay Minerals (17) 115-149
X-ray analysis of Li+- and K+-saturated samples, differential thermal analysis (DTA), thermal gravimetric analysis (TGA), and chemical analysis of 83 samples enable a distinction to be made between Wyoming, Tatatilla, Otay, Chambers, and non-ideal types of montmorillonite, and between ideal and non-ideal types of beidellite. The Greene-Kelly Li+-test differentiates between...
Pyrolysis of humic and fulvic acids
R.L. Wershaw, G.E. Bohner Jr.
1969, Geochimica et Cosmochimica Acta (33) 757-762
Pyrolysis of humic and fulvic acids isolated from a North Carolina soil yields a variety of aromatic, heterocyclic and straight chain organ compounds. The pyrolysis products identified by gas chromatography and mass spectrometry indicate that humic and fulvic acids have aromatic and polysaccharide...
On the global variations of terrestrial heat-flow
W.H.K. Lee
1969, Physics of the Earth and Planetary Interiors (2) 332-341
Over 3 500 measurements of surface heat-flux have been catalogued and analyzed to study the large-scale variations of terrestrial heat-flow. It was found that heat-flow values are correlated with major geologic provinces: higher averages and scattered values in active tectonic regions, and lower averages and more uniform values in stable...
Extraction of vanadium into isobutyl methyl ketone
Hans J. Crump-Wiesner, W.C. Purdy
1969, Talanta (16) 124-129
Because of its advantages in atomic-absorption spectroscopy, isobutyl methyl ketone was chosen as organic solvent for an extraction study on vanadium. Of eight chelating agents which were evaluated for completeness of extraction, ease of use, working pH range, and freedom from interference, cupferron was judged best.<div...
A purple-colored 1M mica clay from Silverton, Colorado
Pei-Lin Tien
1969, Clays and Clay Minerals (17) 245-249
A purple-colored clay of 1M mica polymorph in association with lead-zinc ore was collected from an abandoned mine dump near Silverton, Colorado. Electron micrographs show that the crystallites of the clay are less than 2µ in size and have poorly developed hexagonal outlines. Differential thermal and i.r. absorption analyses indicate...
Methane-derived marine carbonates of pleistocene age
J.C. Hathaway, E.T. Degens
1969, Science (165) 690-692
In some calcium carbonate-bearing sandstones from the edge of the continental shelf off the northeast United States, the δC13 range is from -30 and...
Beach lamination: Nature and origin
H.E. Clifton
1969, Marine Geology (7) 553-559
A distinctive two-fold sedimentation unit characterizes lamination in the upper swash zone of beaches. Within the unit a fine and/or a heavy mineral rich layer at the base grades upward into a coarser and/or a heavy mineral poor layer at the top. This...
Some triple-filament lead isotope ratio measurements and an absolute growth curve for single-stage leads
J. S. Stacey, M.E. Delevaux, T.J. Ulrych
1969, Earth and Planetary Science Letters (6) 15-25
Triple-filament analyses of three standard lead samples are used to calibrate a mass spectrometer in an absolute sense. The bias we measure is 0.0155 percent per mass unit, and the precision (for 95% confidence limits) is ±0.13% or less for all ratios relative to204Pb. Although its precision is not quite...
New method for preparing ultrapure hydrofluoric acid
Mitsunobu Tatsumoto
1969, Analytical Chemistry (41) 2088-2089
No abstract available....
Computer-produced tables, maps, and diagrams as tools in the interpretation of brine data from southeastern Kansas (U.S.A.)
J.M. McNellis, C.O. Morgan, B.H. Lowell
1969, Chemical Geology (4) 303-324
The applicability of computer-oriented techniques to assist in the interpretation of brine data is demonstrated by the use of six programs on data from two example areas. These programs include a data tabling routine; routines for producing Stiff, Piper, and Ropes diagrams;...
Geologic map of the Paint Lick quadrangle, east-central Kentucky
Gordon Whitney Weir
1969, Geologic Quadrangle 800
No abstract available....
Geologic map of the Samuels quadrangle, north-central Kentucky
Roy Clark Kepferle
1969, Geologic Quadrangle 824
No abstract available....
Toxicological assays with fish
L. L. Marking
1969, Bulletin of the Wildlife Disease Association (5) 291-294
No abstract available. ...
Quantitative comparison of peritoneal washes and feces for detecting infectious pancreatic necrosis (IPN) virus in carrier brook trout
J.L. Billi, K. Wolf
1969, Journal of the Fisheries Research Board of Canada (26) 1459-1465
Paired fecal samples and peritoneal washes were taken from 300 18-month-old brook trout for determining their relative value in detecting IPN virus. The testing of feces revealed 14 times as many carriers as were found by peritoneal washes. Initial examinations showed at least 63% of the fish to be carriers...
Selective feeding by juvenile diving ducks in summer
James C. Bartonek, J.J. Hickey
1969, The Auk (86) 443-457
Waterfowl often fail to use foods that seem plentiful to the investigator. The extent to which selective feeding or rejection of foods is a function of behavioral and morphological adaptations of the species, conditioned behavior of the individual, or individual preference for certain foods has not been appraised. The objectives...
Interaction of antimycin A and rotenone in fish bioassays
Robert M. Howland
1969, Progressive Fish-Culturist (31) 33-34
No abstract available. ...
Geochemical maps of an area northwest of the Chulitna River, central Alaska Range
C. C. Hawley, Allen L. Clark
1969, Open-File Report 69-123
An area northwest of the Chulitna River in west-central Alaska Range locally shows local anomalous concentrations of gold, silver, arsenic, copper, zinc, and lead in stream-sediment samples. Most stream sediments showing anomalous concentrations of metals can be correlated with either known or newly discovered deposits or occurrences described in Circular...
Environmental impact of the Big Cypress Swamp jetport
U.S. Department of the Interior
1969, Report
Development of the proposed jetport and its attendant facilities will lead to land drainage and development for agriculture, industry, housing, transportation, and services in the Big Cypress Swamp which will inexorably destroy the south Florida ecosystem and this the Everglades National Park....
Environmental impact of oil development in northern Alaska
Luna Bergere Leopold
1969, Report
It is reported that in the spring of 1969 a high official of one of the oil companies was flying over the area of oil development in the vicinity of Prudhoe Bay. He is quoted as saying "If the American people could see what we are doing to their land...
Selected hydrologic data, southern Utah and Goshen Valleys, Utah
R.M. Cordova
1969, Utah Basic-Data Release 16
The purpose of this report is to present basic geologic, ground-water, surface-water, and quality of water data that are useful for the study and effective development of the water resources of southern Utah and Goshen Valleys. This report supplements an interpretive report which will be published later.Much of the basic...
Hydrologic and climatologic data, 1968, Salt Lake County, Utah
1969, Utah Basic-Data Release 17
An investigation of the water resources of Salt Lake County, Utah, was undertaken by the Water Resources Division of the U.S. Geological Survey in July 1963. This investigation is a cooperative project financed chiefly by equal contributions of the State of Utah and the Federal Government in accordance with an...
