N. King Huber, H. R. Cornwall
1973, Science (182) 1373
No abstract available....
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Publication Extents
Not all publications have extents, not all extents are completely accurateThomas L. Wright, Maurice J. Grolier, Don Swanson
1973, GSA Bulletin (84) 371-386
Study of major element chemical analyses of Columbia River basalt leads to a grouping of most of the analyses into 11 chemical types which are distinguished with little overlap on a SiO2-MgO variation diagram. Other diagnostic variation diagrams are total iron (‘FeO’)-MgO, K2O-MgO, and TiO2-MgO.A four-unit informal stratigraphy has been...
Thomas L. Wright
1973, GSA Bulletin (84) 849-858
The 1959 eruption of Kilauea volcano is unique among recent Kilauea summit eruptions (1952 to 1968) in at least two respects: (1) a large collapse of Kilauea summit accompanied the eruption, and (2) the erupted lavas show a complex variation in their bulk chemical composition. Both features suggest that the...
W.L. Ellsworth, R. H. Campbell, D.P. Hill, R.A. Page, R. W. Alewine III, Thomas C. Hanks, T. H. Heaton, J.A. Hileman, H. Kanamori, B. Minster, J.H. Whitcomb
1973, Science (182) 1127-1129
Seismological investigations show that the Point Mugu earthquake involved north-south crustal shortening deep within the complex fault zone that marks the southern front of the Transverse Ranges province. This earthquake sequence results from the same stress system responsible for the deformation in this province in the Pliocene through Holocene and...
John D. Hendricks, James D. Robb
1973, Geological Society of America Bulletin (84) 3911-3916
A total of 97 new bottom gravity measurements on the continental shelf in the vicinity of Georges Bank was reduced to the simple Bouguer anomaly, using a density of 2.80 gm per cm3 for the correction. Results help substantiate the presence of mafic and felsic intrusive bodies along the northern...
Robert V. Sharp, Wendell A. Duffield
1973, Geological Society of America Bulletin (84) 3969-3976
Recent detailed geologic mapping in the Sierran foothills reveals that rocks previously included in the Jurassic Amador Group must be redefined. The term “Amador Group” was applied by Taliaferro and Clark to a section of epiclastic metasedimentary rocks (the Cosumnes Formation) and the seemingly conformable overlying metavolcanic rocks (the Logtown...
Fred L. Sayles, Frank T. Manheim, Lee S. Waterman
1973, Initial reports of the Deep Sea Drilling Project (15) 783-804
Analyses of pore fluids from reducing environments demonstrate that reduction of SO4 is accompanied by large increases in alkalinity and strong depletion of Ca and Mg. The data are compatible with a model of replacement of Fe3+ in clay lattices by Mg from the interstitial solutions and the precipitation of...
A.A.R. Zohdy, L. A. Anderson, L.J. Patrick Muffler
1973, Geophysics (38) 1130-1144
The Mud Volcano area in Yellowstone National Park provides an example of a vapor‐dominated geothermal system. A test well drilled to a depth of about 347 ft penetrated the vapor‐dominated reservoir at a depth of less than 300 ft. Subsequently, 16 vertical electrical soundings (VES) of the Schlumberger type were...
C. W. Naeser, Glen A. Izett, Ray E. Wilcox
1973, Geology (1) 187-189
Pearlette family volcanic ash beds at two faunally important late Cenozoic localities near Meade, Meade County, Kansas, are very similar in chemical and mineralogic composition, yet their zircon microphenocrysts have markedly different fission-track ages. Zircon microphenocrysts from type B Pearlette volcanic ash underlying sediments that contain the Borchers local fauna...
Gerald K. Czamanske, George A. Desborough, Fraser E. Goff
1973, Economic Geology (68) 1275-1288
Quantitative study of intrinsic inhomogeneities in native gold grains from three deposits in the western United States has revealed concentration profiles that represent the integrated sum of natural diffusion plus original chemical heterogeneity. By assuming that measured natural concentration gradients result solely from diffusion, upper limits may be placed on...
Dennis P. Cox, Richard R. Larson, Richard B. Tripp
1973, Economic Geology (68) 1329-1334
No abstract available....
Roger D. Borcherdt
1973, Journal of the Acoustical Society of America (54) 1651-1653
The analytic solution for a Rayleigh‐type surface wave on a linear viscoelastic half‐space is obtained. The general viscoelastic solution predicts several properties of the surface wave distinct from those predicted by elasticity. The velocity, absorption coefficient, and displacement field are described theoretically....
William B. Bull
1973, Geological Society of America Bulletin (84) 3783-3802
In the west-central San Joaquin Valley, California, pumping of ground water has changed water levels, thereby increasing the stresses that tend to compact alluvium by as much as 50 percent and creating a large area of intense land subsidence.The estimated 1943–1960 specific unit compaction (compaction during a time period, per...
Gary Wedemeyer, W. T. Yasutake
1973, Journal of the Fisheries Research Board of Canada (31) 179-184
The physiological stress of 200 ppm formalin treatments at 10 C is more severe in the juvenile steelhead trout (Salmo gairdneri) than in the spring chinook salmon (Oncorhynchus tshawytscha). In the steelhead, a marked hypochloremia follows a 1-hr treatment and recovery requires about 24 hr. During longer treatments, hypercholesterolemia together with reduced...
D. L. Turner, R. B. Forbes, Charles W. Naeser
1973, Science (182) 579-581
Kodiak Seamount and Giacomini Guyot have been dated at 22.6 ± 1.1 and 19.9 ± 1.0 [2σ (standard deviation)] × 106 years, respectively. Concordant whole-rock and plagioclase potassium-argon dates and fission-track apatite ages demonstrate that significant quantities of excess radiogenic 40Ar are not present in the dated samples. These...
George W. Moore
1973, Geology (1) 99-100
As spreading at known interarc basins occurs to the west of westward-dipping subduction zones, and movement of the lower plates is also to the west, it is suggested that all plates move chiefly westward. Rates of motion are equal to a net difference between eastward and westward transport on semidiurnal...
F. K. Miller, E.H. McKee, R. G. Yates
1973, Geological Society of America Bulletin (84) 3723-3729
Greenstone of basaltic composition forms the middle part of the Windermere System in southern British Columbia and the correlative Windermere Group in northeastern Washington. The greenstone, together with the rest of the Windermere in this region, is highly sheared, altered, and metamorphosed, except for a small exposed mass of relatively...
Ralph C. Heath
1973, Groundwater (11) 50-51
No abstract available....
Ronald Wayne Kistler, Zell E. Peterman
1973, Geological Society of America Bulletin (84) 3489-3512
Initial Sr87/Sr86 of granitic rocks which are exposed north of the Garlock fault in California, and which represent the entire 130-m.y. time span of emplacement during the Mesozoic, ranges mainly from 0.7031 to 0.7082, with one value of 0.7094. A systematic areal variation, independent of age, exists for initial Sr87/Sr86 in these...
David P. Hill
1973, Geophysical Journal of the Royal Astronomical Society (34) 149-177
A theoretical analysis of acoustic waves refracted by a spherical boundary across which velocity and density increase abruptly and below which velocity and density may either increase or decrease continuously with depth is formulated in terms of waves generated at a harmonic point source and scattered by a radially...
R. W. Bayley, H. L. James
1973, Economic Geology (68) 934-959
No abstract available....
Bruce R. Doe, Maryse Delevaux
1973, Geological Society of America Bulletin (84) 3513-3526
Six alkali feldspar and two whole-rock samples of granitic rocks from the Sierra Nevada batholith and adjacent Klamath Mountains were analyzed for their lead-isotope compositions. The samples represented each of three 87Sr/86Sr groupings (< 0.704, 0.704 to 0.706, and > 0.706) for granitic rocks north of the Garlock fault in California....
Clifford A. Kaye, Gary W. Stuckey
1973, Geology (1) 141-144
The 18.6-yr cycle of the Moon's nodes dominates the annual means of high water, low water, and range at Boston and at other East Coast harbors. The maxima and minima of the high-water and range curves agree closely with the 180° and 0° long. yr, respectively, of the Moon's ascending...
D.J. Pinckney, R.L. Wershaw
1973, Journal of Research of the U.S. Geological Survey (1) 701-707
A procedure has been devised for the fractionation of humic acid samples from different environments. This procedure involves fractionation of the sample by adsorption chromatography on a Sephadex G-50 column followed by chromatography on either a G-25 or a G-100 column. The fractions of the solutions are then examined by small angle X-ray scattering. Three...
Raymond L. Nace
1973, Journal of Research of the U.S. Geological Survey (1) 719-723
Problems of underground storage of waste involve geology in its broadest sense, including hydrology, geochemistry, and geophysics. Wastes may be solid, liquid, or gaseous, and they may be chemically toxic or noxious, esthetically offensive, or radioactive. Some wastes require only temporary containment, whereas others must be isolated for indefinitely long periods. The means and locale...