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...
An unusual case of fish disease caused by Ophyroglena sp
G. L. Hoffman
1967, Bulletin of the Wildlife Disease Association (3) 111-112
No abstract available....
Geomagnetic polarity epochs: Nunivak Island, Alaska
A. Cox, G. B. Dalrymple
1967, Earth and Planetary Science Letters (3) 173-177
New paleomagnetic and potassium-argon dating measurements have been made of basalt flows from Nunivak Island, Alaska, with the following results. (1) The best estimate of the age of the Brunhes/Matuyama polarity epoch boundary is found to be 0.694 m.y. (2) The best...
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...
87Sr/86Sr ratios in some eugeosynclinal sedimentary rocks and their bearing on the origin of granitic magma in orogenic belts
Z. E. Peterman, C. E. Hedge, R. G. Coleman, P. D. Snavely Jr.
1967, Earth and Planetary Science Letters (2) 433-439
Rb and Sr contents and87Sr/86Sr values were determined for samples of eugeosynclinal sedimentary rocks, mostly graywackes, from Oregon and California. These data are compatible with the theory of anataxis of eugeosynclinal sedimentary rocks in orogenic belts to produce granitic magmas provided...
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....
Pressure derivatives of elastic moduli of fused quartz to 10 kb
L. Peselnick, R. Meister, W.H. Wilson
1967, Journal of Physics and Chemistry of Solids (28) 635-639
Measurements of the longitudinal and shear moduli were made on fused quartz to 10 kb at 24·5°C. The anomalous behavior of the bulk modulus K at low pressure, ∂K∂P< 0">∂K∂P< 0, begins to approach the “normal” behavior of solids, ∂K∂P> 0">∂K∂P> 0,...
The ternary system K2SO4 MgSO4 CaSO4
J.J. Rowe, G.W. Morey, C.C. Silber
1967, Journal of Inorganic and Nuclear Chemistry (29) 925-942
Melting and subsolidus relations in the system K2SO4MgSO4CaSO4 were studied using heating-cooling curves, differential thermal analysis, optics, X-ray diffraction at room and high temperatures and by quenching techniques. Previous investigators were unable to study the binary MgSO4CaSO4 system and the adjacent area in the ternary system because of the decomposition of MgSO4 and...
A seventeenth century mandibular tumor in a North American Indian
E.E. Kelln, E.V. McMichael, B. Zimmermann
1967, Oral Surgery, Oral Medicine, Oral Pathology (23) 78-81
The oldest tumor so far recorded is believed to have been a hemangioma. It occurred in a bone of a dinosaur’s tail1 and thus considerably antedates the historical period. The oldest known human tumor is much younger, dating back only to the middle of the third century after Christ.1 It...
Complexometric determination of gallium with calcein blue as indicator
H.N. Elsheimer
1967, Talanta (14) 97-102
A metalfluorechromic indicator, Calcein Blue, has been used for the back-titration of milligram amounts of EDTA in presence of gallium complexes. The indicator was used in conjunction with an ultraviolet titration assembly equipped with a cadmium sulphide detector cell and a microammeter for enhanced end-point detection....
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...
Preliminary lead isotope investigations of brine from the Red Sea, Galena from the Kingdom of Saudi Arabia, and galena from United Arab Republic (Egypt)
M.H. Delevaux, B. R. Doe, Glen F. Brown
1967, Earth and Planetary Science Letters (3) 139-144
The isotopic composition of lead in Red Sea chloride brine containing 0.5 ppm Pb is found to be similar to that of some Cenozoic ore leads such as galena at Rabigh in Saudi Arabia that may have formed during mineralization accompanying Tertiary...
K Ar and Rb Sr measurements on P-207, the U.S.G.S. interlaboratory standard muscovite
M. A. Lanphere, G. B. Dalrymple
1967, Geochimica et Cosmochimica Acta (31) 1091-1094
Potassium-argon analyses of P-207 in twenty-four laboratories and rubidium-strontium analyses in ten laboratories indicate that for material of this typo the average interlaboratory precision for KAr ages is 2.6% and for RbSr ages is 3.4%, and the average intralaboratory precision for KAr ages is 1.6% and for RbSr ages is...
Geological exploration in an East Coast submarine canyon from a research submersible
J. V. A. Trumbull, M.J. McCamis
1967, Science (158) 370-372
Large talus blocks litter the flat floor of Oceanographer Canyon at a depth of 1460 meters; they indicate down-axis mass transport of floor...
Emission spectrographic determination of barium in sea water using a cation exchange concentration procedure
Barney J. Szabo, Oiva Joensuu
1967, Environmental Science & Technology (1) 499-502
No abstract available....
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...
Comparison of Macedon and Darwin glass
D.R. Chapman, Klaus Keil, C. Annell
1967, Geochimica et Cosmochimica Acta (31) 1595-1603
Chemical analyses are presented for major and minor elements in two specimens of natural glass reported from Macedon, Victoria, and are compared with new analyses of glass from Mt. Darwin, Tasmania. One specimen of Macedon glass is dark, the other light; both are spongy with relatively large cavities of size...
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...
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...
Precision measurement of lead isotopes ratios: preliminary analyses from the U.S. mine, Bingham Canyon, Utah
J. S. Stacey, W. J. Moore, R.D. Rubright
1967, Earth and Planetary Science Letters (2) 489-499
A gas-source mass spectrometer has been constructed for the precise measurement of lead isotope ratios. Sixteen analyses on 4 different preparations of the same galena made over a period of 2 months gave 95% confidence limits (per analysis) of 206Pb/204Pb= 0.080%, 207Pb/206Pb= 0.042%and208Pb/206Pb=...
Mineral and chemical variations within an ash-flow sheet from Aso caldera, Southwestern Japan
P. W. Lipman
1967, Contributions to Mineralogy and Petrology (16) 300-327
Although products of individual volcanic eruptions, especially voluminous ash-flow eruptions, have been considered among the best available samples of natural magmas, detailed petrographic and chemical study indicates that bulk compositions of unaltered Pleistocene ash-flow tuffs from Aso caldera, Japan, deviate significantly from original magmatic compositions. The last major ash-flow sheet...
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...
Pliocene geomagnetic polarity epochs
G. B. Dalrymple, A. Cox, Richard R. Doell, C. S. Grommé
1967, Earth and Planetary Science Letters (2) 163-173
A paleomagnetic and K-Ar dating study of 44 upper Miocene and Pliocene volcanic units from the western United States suggests that the frequency of reversals of the earth's magnetic field during Pliocene time may have been comparable with that of the...
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...
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,...
