Intermediate-scale mapping
J. LeRoy Ward
1976, Journal of Research of the U.S. Geological Survey (4) 253-254
The U.S. Geological Survey has introduced an intermediate-scale map series (1:100,000 and 1:50,000) in response to the demand for maps at scales between the 1:24,000 and 1:250,000 standard series. The goal is to provide basic cartographic data at the level of detail and in the format selected by Federal, State,...
A reconnaissance study of the uranium and thorium contents of plutonic rocks of the southeastern Seward Peninsula, Alaska
Thomas P. Miller, Carl M. Bunker
1976, Journal of Research of the U.S. Geological Survey (4) 367-377
Large granitic Cretaceous plutons are exposed along and adjacent to an arcuate belt of igneous and high-grade raetamorphic rocks in the southeastern Seward Peninsula of Alaska. Reconnaissance studies of these plutons have shown that the Darby pluton has well above average amounts of uranium and thorium (11.2 ppm and 58.7...
Ocher as a prospecting medium in the Montezuma district of central Colorado
George J. Neuerburg, Theodore Botinelly
1976, Journal of Research of the U.S. Geological Survey (4) 359-365
Ocher occurs widely In the Montezuma district as small sinters and as bedded deposits of bog iron and ocher-cemented conglomerates. The iron of the ochers is derived from pyrite-rich veins and from pyritic hydrothermally altered rocks. Trace amounts of ore metals in the ocher and its admixed detritus are...
Sediment-filled pots in upland gravels of Maryland and Virginia
Louis C. Conant, Robert F. Black, John W. Hosterman
1976, Journal of Research of the U.S. Geological Survey (4) 353-358
Pot-shaped depressions filled with sandy clayey silt are found in "Upland" gravels (previously termed Brandywine) of probable Miocene age, in northeastern Maryland and in Virginia near Washington, D.C. The pots are about 7 ft (2m) deep and commonly are about as wide. In plan, many are strongly elliptical. Sides are...
Differential inhibition of host protein synthesis in L cells infected with RNA - temperature-sensitive mutants of vesicular stomatitis virus
P. E. McAllister, R.R. Wagner
1976, Journal of Virology (18) 550-558
The response of mouse L cells to infection with wild-type (wt) and temperature-sensitive (ts) mutants of vesicular stomatitis virus was monitored by sodium dodecyl sulfate-polyacrylamide gel electrophoresis to delineate the synthesis of host cell and viral proteins. Experiments utilized transcriptase mutants of complementation group I (ts114 and ts13), a group...
Direct dating of mineralization at Goldfield, Nevada, by potassium-argon and fission-track methods
Roger P. Ashley, M.L. Silberman
1976, Economic Geology (71) 904-924
Potassium-argon dating of hypogene alunite and K-mica from hydrothermally altered rocks at Goldfield, Nevada, yields mineralization ages of 20 to 21 m.y., in good agreement with a mineralization age established by potassium-argon dating of unaltered premineralization and postmineralization volcanic units. Premineralization volcanic units that are pervasively propylitized cannot be dated...
Diamonds in an upper mantle peridotite nodule from kimberlite in southern Wyoming
M. E. McCallum, D.H. Eggler
1976, Science (192) 253-256
Diamonds in a serpentinized garnet peridotite nodule from a diatreme in southern Wyoming are the first known occurrence in an upper mantle peridotite xenolith from a kimberlite intrusion in North America as well as the second authenticated occurrence of diamonds from kimberlite pipes in North America. The nodule is believed...
Tool use in a social insect and its implications for competitive interactions
Joan H. Fellers, Gary M. Fellers
1976, Science (192) 70-72
Four species of myrmicine ants, Aphaenogaster rudis, A. treatae, A. tennesseensis, and A. fulva, use pieces of leaf, mud, and sand grains as tools to carry soft foods from distant sources to the colony. Tools are tended on the food and removed by colony members without regard to which individual brought the tool. Food...
Effects of local geological conditions in the San Francisco Bay region on ground motions and the intensities of the 1906 earthquake
Roger D. Borcherdt, James F. Gibbs
1976, Bulletin of the Seismological Society of America (66) 467-500
Measurements of ground motion generated by nuclear explosions in Nevada have been completed for 99 locations in the San Francisco Bay region, California. The recordings show marked amplitude variations in the frequency band 0.25 to 3.0 Hz that are consistently related to the local geological conditions of the recording site....
An experiment in earthquake control at Rangely, Colorado
C.B. Raleigh, J. H. Healy, J.D. Bredehoeft
1976, Science (191) 1230-1237
An experiment in an oil field at Rangely, Colorado, has demonstrated the feasibility of earthquake control. Variations in seismicity were produced by controlled variations in the fluid pressure in a seismically active zone. Precise earthquake locations revealed that the earthquakes clustered about a fault trending through a zone of high...
Amino acids and gases in some springs and an oil field in California
John B. Rapp
1976, Journal of Research of the U.S. Geological Survey (4) 227-232
Samples of water and gas were collected from six springs and two wells in the Upper Cretaceous Great Valley sequence and Franciscan Formation underlying the Coast Range of northern California and from four oil wells penetrating Tertiary sedimentary rocks in the Kettleman North Dome oil field. Comparison of the dissolved...
Reassessment of mercury in surface water in the Adirondack region, New York
William Buller
1976, Journal of Research of the U.S. Geological Survey (4) 223-226
A study in 1970 established a natural background concentration of mercury in surface water in the Adirondack region of New York. In 1974, new methods of sample preservation and analysis were used in determining concentrations of mercury of samples of water from the same surface-water sites sampled in 1970-71. Concentrations...
Interstation correlation of peak-flow estimates
Clayton H. Hardison
1976, Journal of Research of the U.S. Geological Survey (4) 221-222
Equations are given for using the correlation coefficient between annual peaks at a pair of stream gaging stations to estimate the interstation correlation coefficient of estimated T-year peaks, computed standard deviations, and computed skew coefficients at the same pair of stations. The equations are based on statistics computed from samples...
Flameless atomic absorption determination of bismuth in soils and rocks
W. H. Ficklin, F. N. Ward
1976, Journal of Research of the U.S. Geological Survey (4) 217-220
Recent advances in flameless atomic absorption allow determinations of bismuth in concentrations as small as 50 ppb in 0.2 g of rock or soil sample. The sample is fused with sodium bisulfate and the fusion product is leached with hot 2 M hydrochloric acid and treated with ammonium citrate, (ethylenedinitrilo)...
A review of the minerals of the alunite-jarosite, beudantite, and plumbogummite groups
Theodore Botinelly
1976, Journal of Research of the U.S. Geological Survey (4) 213-216
Minerals of the alunite-jarosite, beudantlte, and plumbogummite groups can be divided on the basis of iron or aluminum content into two groups which are consistent in optical and X-ray characteristics. Both chemical and X-ray data are needed for identification....
Definitive X-ray powder data for covellite, anilite, djurleite, and chalcocite
Robert W. Potter II, Howard T. Evans Jr.
1976, Journal of Research of the U.S. Geological Survey (4) 205-212
By using the Guinier-Hägg focusing X-ray powder camera with CrKα1 and CuKα1 radiations, new powder data for covellite (CuS), anilite (Cu7S4, djurleite (Cu1.934S), and low chalcocite (Cu2S) have been obtained from synthetic and natural materials. The powder data were treated by least-squares analysis to obtain the best unit-cell parameters consistent...
The volumetric properties of H2O — A graphical portrayal
James R. Fisher
1976, Journal of Research of the U.S. Geological Survey (4) 189-193
A graphical display of the volumetric properties of H2O is presented as density (0.01 to 1.0 g-cm-3) contoured on pressure-temperature coordinates and pressure (1-10,000 bars) contoured on density-temperature coordinates over the temperature range 0-1,000 °C. Data were obtained from sources published during 1964-1969; several minor inconsistencies are observed and attributed...
Geology of the massifs at the Apollo 17 landing site
Edward W. Wolfe, V. S. Reed
1976, Journal of Research of the U.S. Geological Survey (4) 171-180
The Apollo 17 spacecraft landed in a narrow valley that embays mountainous terrain near the southeastern edge of Mare Serenitatis. Two overlapping basin structures underlie Mare Serenitatis: a larger one to the south and a smaller one to the north. The massifs and sculptured hills in the Taurus-Littrow area and...
Bog stratigraphy, radiocarbon dates, and Pinedale to Holocene glacial history in the Front Range, Colorado
Richard F. Madole
1976, Journal of Research of the U.S. Geological Survey (4) 163-169
Radiocarbon dates and stratigraphic cores from bogs, kettle ponds, and former ice-marginal lakes on the east and west sides of the Front Range, Colo., between lat 40°00' and 40°24' N. suggest that (1) valley glaciers of Pinedale age began to recede from their terminal positions between about 14,600 and 13,000...
The Placer River Silt — An intertidal deposit caused by the 1964 Alaska earthquake
A.T. Ovenshine, Daniel E. Lawson, S. R. Bartsch-Winkler
1976, Journal of Research of the U.S. Geological Survey (4) 151-162
At the head of Turnagain Arm near Anchorage, the major lasting geologic consequence of the Alaska earthquake of 1964 was deposition of the Placer River Silt, an intertidal deposit covering an area of more than 18 km2 and containing more than 20X106 m3 of sediment. This formation, which was derived...
Cenozoic deposits of southeastern New Mexico and an outline of the history of evaporite dissolution
George O. Bachman
1976, Journal of Research of the U.S. Geological Survey (4) 135-149
Sedimentary records of Cenozoic history in southeastern New Mexico begin with the Ogallala Formation of Miocene and Pliocene age. Later records include the Gatuna Formation of early or middle Pleistocene age, Mescalero caliche, an informal term, of middle Pleistocene age, and fluvial deposits of late Pleistocene age but there are...
Geology of central Costa Rica and its implications in the geologic history of the region
Richard D. Krushensky, Enrique V. Malavassi, Rolando M. Castillo
1976, Journal of Research of the U.S. Geological Survey (4) 127-134
The oldest rocks in Costa Rica, the Nicoya Complex, crop out in an arcuate belt along the Pacific coast and outside the mapped area. The complex is an ophiolite assemblage and indicates that a Late Cretaceous arc-trench system, probably a southerly extension of the Middle America Trench, lay along and...
Determination, storage, and preservation of low molecular weight hydrocarbon gases in aqueous solution
D. J. Schultz, J. F. Pankow, D. Y. Tai, D. W. Stephens, R. E. Rathbun
1976, Journal of Research of the U.S. Geological Survey (4) 247-251
A gas chromatograph with a flame ionization detector was used in conjunction with a stripping chamber and cold trap apparatus to measure microgram-per-litre quantities of low molecular weight hydrocarbon gases in water samples. Glass bottles with ground-glass stoppers were used to store the samples. Formalin was added to stop bacterial...
Solute transport and modeling of water quality in a small stream
S. M. Zand, V. C. Kennedy, G. W. Zellweger, R.J. Avanzino
1976, Journal of Research of the U.S. Geological Survey 233-240
An injection of chloride, sodium, and stable strontium was made at a constant rate for 3 hours into Uvas Creek, Santa Clara County, Calif., to determine the mass transport processes in a small stream. Five observation points were selected within a 610-metre reach of the stream below the injection site....
Differential seed predation on two species of Arctostaphylos (Ericaceae)
Jon E. Keeley, R.L. Hays
1976, Oecologia (24) 71-81
The fire-prone California chaparral contains two sympatric species of shrubs: Arctostaphylos glauca and A. glandulosa. A previous study showed that in a stand where both species had similar amounts of coverage, A. glauca had fewer seeds in the soil. We attempt to answer the questions: 1) Could ground-foraging seed predators produce the lower population of A....
