Potassium-argon ages of recent rhyolites of the Mono and Inyo craters, California
G. Brent Dalrymple
1967, Earth and Planetary Science Letters (3) 289-298
Twenty-two KAr ages were determined for sanidine samples from 10 rhyolite domes of the Mono and Inyo Craters to test the applicability of KAr dating to volcanic rocks of Recent age. Comparison of the results with ‘blank’ and dosed analyses shows...
Borate mineral assemblages in the system Na2O-CaO-MgO-B2O3-H2O
C. L. Christ, A.H. Truesdell, Richard C. Erd
1967, Geochimica et Cosmochimica Acta (31) 313-337
The significant known hydrated borate mineral assemblages (principally of the western United States) in the system Na2O-CaO-MgO-B2O3-H2O are expressible in three ternary composition diagrams. Phase rule interpretation of the diagrams is consistent with observation, if the activity of H2O is generally considered to be determined by the geologic environment. The...
Fractionation of rare-earth elements in allanite and monazite as related to geology of the Mt. Wheeler mine area, Nevada
D. E. Lee, H. Bastron
1967, Geochimica et Cosmochimica Acta (31) 339-356
Rare-earth contents of 20 allanites and 13 monazites, accessory minerals from a restricted outcrop area of intrusive granitic rocks, are reported. A quantity called sigma (Σ), which is the sum of the atomic percentages of La, Ce and Pr, is used...
Sulfide solubilities in alteration-controlled systems
J.J. Hemley, C. Meyer, C.J. Hodgson, A.B. Thatcher
1967, Science (158) 1580-1582
Solubilities of sphalerite (ZnS) and galena (PbS) were determined at 300° to 500°C and 1000 bars total pressure in a chemical environment buffered...
Geomagnetic polarity epochs: new data from Olduvai Gorge, Tanganyika
C. S. Grommé, R. L. Hay
1967, Earth and Planetary Science Letters (2) 111-115
The lower lava flow of Bed I in Olduvai Gorge, Tanganyika, carries natural remanent magnetization (NRM) having normal polarity. Thermal demagnetization experiments demonstrate the stability of this NRM. Thus the Olduvai geomagnetic polarity event, which was originally named from the upper lava...
Correlation of Upper Triassic and Triassic(?) Formations between southwestern Utah and southern Nevada
Richard F. Wilson
1967, Bulletin 1244-D
No abstract available....
The fractionation of nickel between olivine and augite as a geothermometer
T.A. Hakli, T. L. Wright
1967, Geochimica et Cosmochimica Acta (31) 877-884
The coexisting olivine, clinopyroxene and glass of five samples collected from the Makaopuhi lava lake in Hawaii, at temperatures ranging from 1050 to 1160°C were analysed for nickel with an electron probe microanalyser. The results strongly suggest that the distribution of nickel between these three phase pairs well obeys the...
Cliftonite in meteorites: A proposed origin
R. Brett, G.T. Higgins
1967, Science (156) 819-820
Cliftonite, a polycrystalline aggregate of graphite with cubic morphology, is known in ten 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. We have synthesized cliftonite in Fe-Ni-C...
Carbon-13-rich diagenetic carbonates in miocene formations of California and Oregon
K. J. Murata, I.I. Friedman, B.M. Madsen
1967, Science (156) 1484-1486
Carbon unusually rich in C13(δC13 = +5.4 to +19.0 per mil relative to the Peedee belemnite carbonate standard of the University of Chicago) is...
Holocene changes in sea level: Evidence in Micronesia
F.P. Shepard, Joseph R. Curray, W.A. Newman, A.L. Bloom, N.D. Newell, J. I. Tracey Jr., H.H. Veeh
1967, Science (157) 542-544
Investigation of 33 islands, scattered widely across the Caroline and Marshall Island groups in the Central Pacific revealed no emerged reefs in which corals had unquestionably formed in situ, or other direct evidence of postglacial high stands of sea level. Low unconsolidated rock terraces and ridges of reef-flat islands, mostly...
Base surge in recent volcanic eruptions
J.G. Moore
1967, Bulletin Volcanologique (30) 337-363
A base surge, first identified at the Bikini thermonuclear undersea explosion, is a ring-shaped basal cloud that sweeps outward as a density flow from the base of a vertical explosion column. Base surges are also common in shallow underground test explosions and are formed by expanding gases which first vent...
The Alaska earthquake of 1964
W. R. Hansen
1967, Nature (215) 348-351
Now that the dust has settled it is possible to assess the long term effects of the Alaskan earthquake on March 27, both on the activities of man and on the wild life of the State....
Geochemical evidence of present-day serpentinization
I. Barnes, Valmore C. LaMarche Jr., G. Himmelberg
1967, Science (156) 830-832
Ultrabasic (pH > 11) water issues from some fresh ultramafic bodies. The properties of the ultrabasic solutions are believed to be due to current reactions yielding serpentine from primary olivines and pyroxenes. The low concentrations of divalent iron, divalent magnesium, and dissolved silica from the serpentinization require an increase in...
Loss of halogens from crystallized and glassy silicic volcanic rocks
D. C. Noble, V. C. Smith, L. C. Peck
1967, Geochimica et Cosmochimica Acta (31) 215-223
One hundred and sixty-four F and Cl analyses of silicic welded tuffs and lavas and glass separates are presented. Comparison of the F and Cl contents of crystallized rocks with those of nonhydrated glass and hydrated glassy rocks from the same rock units shows that most of the halogens originally...
Paleomagnetism: United States-Japan committee on scientific cooperation
A. Cox, N. Kawai
1967, Conference Paper, Science
[No abstract available]...
Altithermal timberline advance in Western United States
Valmore C. LaMarche Jr., H. A. Mooney
1967, Nature (213) 980-982
A combination of radiocarbon dating and counting of annual rings of the remains of trees has been used to establish the time of retreat of forests from sub-alpine mountains in California and Nevada. The information obtained can serve as a palaeoclimatic indicator....
Freshwater peat on the continental shelf
K.O. Emery, R. L. Wigley, A.S. Bartlett, M. Rubin, E.S. Barghoorn
1967, Science (158) 1301-1307
Freshwater peats from the continental shelf off northeastern United States contain the same general pollen sequence as peats from ponds that are above sea level and that are of comparable radiocarbon ages. These peats indicate that during glacial times of low sea level terrestrial vegetation covered the region that is...
Toxicity of MS-222 to selected fishes
L. L. Marking
1967, Investigations in Fish Control 12
Abstract not submitted to date...
Labor-saving devices for bioassay laboratories
R.J. Hesselberg, R.M. Burress
1967, Investigations in Fish Control 21
Abstract not submitted to date...
Diatoms as food of larval sea lampreys in a small tributary of northern Lake Michigan
Patrick J. Manion
1967, Transactions of the American Fisheries Society (96) 224-226
The food and food preferences of sea lamprey ammocoetes have not been investigated. The food of the larval American brook lamprey, Lampetra lamottei, in the Great Lakes region consisted mainly of diatoms and desmids according to Creaser and Hann. Schroll discussed the biology of feeding of ammocoetes of Lampetra planeri...
The effect of the lamprey larvicide, 3-trifluormethyl-4-nitrophenol, on selected aquatic invertebrates
Allen J. Smith
1967, Transactions of the American Fisheries Society (96) 410-413
The chemical compound 3-trifluoromethyl-4-nitrophenol (TFM) is used to control the sea lamprey (Petromyzon marinus) in the upper Great Lakes. It is introduced into streams in which sea lampreys have spawned, to kill the larvae. These 'treatments' are carried out at intervals shorter than the larval phase of the sea lamprey's...
Molecular characteristics versus biological activity
Vernon C. Applegate, Manning A. Smith, Bennett R. Willeford
1967, Chemistry (40) 28-30
The molecular characteristics of mononitrophenols containing halogens not only play a key role in their biological activity but provide a novel example of selective toxicity among vertebrate animals. It has been reported that efforts to control the parasitic sea lamprey in the Great Lakes are directed at present to...
Chemical analyses of water from observation wells in the Edwards and associated limestones, San Antonio area, Texas, 1966
Paul Rettman
1967, Edwards Underground Water District Bulletin 13
No abstract available....
Ground-water discharge from the Edwards and associated limestones, San Antonio area, Texas, 1966
Paul Rettman
1967, Edwards Underground Water District Bulletin 14
No abstract available....
U.S. Geological Survey silicate rock standards
F.J. Flanagan
1967, Geochimica et Cosmochimica Acta (31) 289-308
The U.S. Geological Survey has processed six silicate rocks to provide new reference samples to supplement G-1 and W-1. Complete conventional, rapid rock, and spectrochemical analyses by the U.S. Geological Survey are reported for a granite (replacement for G-1), a granodiorite, an andesite,...
