Paleomagnetism of some Precambrian basaltic flows and red beds, Eastern Grand Canyon, Arizona
D. P. Elston, Scott G. Robert
1973, Earth and Planetary Science Letters (18) 253-265
Lava flows and red sandstone beds near the middle of the Upper Precambrian Grand Canyon Series exhibit stable remanent magnetization. The beds are about 1000 m stratigraphically above rocks of the Grand Canyon Series for which paleomagnetic poles have been reported. All...
K, Rb, Sr and 87Sr 86Sr in rocks from the Mid-Indian Oceanic Ridge
K.V. Subbarao, C. E. Hedge
1973, Earth and Planetary Science Letters (18) 223-228
The 87Sr/86Sr ratios of Mid-Indian Oceanic Ridge (MIOR) basalts are nearly identical (0.7032 to 0.7035), with the exception of one more highly radiogenic sample (0.7043). These values are consistently higher than the strontium isotopic ratios of the ridge basalts from Atlantic and...
Simultaneous flow of water and solutes through geological membranes-I. Experimental investigation
Y.K. Kharaka, F.A.P. Berry
1973, Geochimica et Cosmochimica Acta (37) 2577-2603
The relative retardation by geological membranes of cations and anions generally present in subsurface waters was investigated using a high pressure and high temperature ‘filtration cell’. The solutions were forced through different clays and a disaggregated shale subjected to compaction pressures up to...
Stress changes ahead of an advancing tunnel
J.F. Abel, F. T. Lee
1973, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (10) 673-697
Instrumentation placed ahead of three model tunnels in the laboratory and ahead of a crosscut driven in a metamorphic rock mass detected stress changes several tunnel diameters ahead of the tunnel face. Stress changes were detected 4 diameters ahead of a model tunnel drilled into nearly elastic acrylic, 2·50 diameters...
Effect of sea water interaction on strontium isotope composition of deep-sea basalts
Dasch E. Julius, C. E. Hedge, J. Dymond
1973, Earth and Planetary Science Letters (19) 177-183
Analyses of rim-to-interior samples of fresh tholeiitic pillow basalts, deuterically altered holocrystalline basalts, and older, weathered tholeiitic basalts from the deep sea indicate that 87Sr/86Sr ratios of the older basalts are raised by low temperature interaction with strontium dissolved in sea water. 87Sr/86Sr correlates...
Galerkin finite-element simulation of a geothermal reservoir
J.W. Mercer Jr., G.F. Pinder
1973, Geothermics (2) 81-89
The equations describing fluid flow and energy transport in a porous medium can be used to formulate a mathematical model capable of simulating the transient response of a hot-water geothermal reservoir. The resulting equations can be solved accurately and efficiently using a numerical...
Radial particle-size segregation during packing of particulates into cylindrical containers
C.D. Ripple, R.V. James, J. Rubin
1973, Powder Technology (8) 165-175
In a series of experiments, soil materials were placed in long cylindrical containers, using various packing procedures. Soil columns produced by deposition and simultaneous vibratory compaction were dense and axially uniform, but showed significant radial segregation of particle sizes. Similar results were obtained with deposition and simultaneous impact-type compaction when...
Ultrafiltration by a compacted clay membrane-II. Sodium ion exclusion at various ionic strengths
B.B. Hanshaw, T.B. Coplen
1973, Geochimica et Cosmochimica Acta (37) 2311-2327
Several recent laboratory studies and field investigations have indicated that shales and compacted clay minerals behave as semipermeable membranes. One of the properties of semipermeable membranes is to retard or prevent the passage of charged ionic species through the membrane pores while allowing relatively free movement of uncharged species. This...
Imaging characteristics of photogrammetric camera systems
R. Welch, J. Halliday
1973, Photogrammetria (29) 1-43
In view of the current interest in high-altitude and space photographic systems for photogrammetric mapping, the United States Geological Survey (U.S.G.S.) undertook a comprehensive research project designed to explore the practical aspects of applying the latest image quality evaluation techniques to the analysis of such systems. The project had two...
Edwardsiella tarda, a new pathogen of channel catfish (Ictalurus punctatus)
F. P. Meyer, G. L. Bullock
1973, Applied Microbiology (25) 155-156
Edwardsiella tarda, an enteric, gram-negative bacterium, causes gas-filled, malodorous lesions in muscle tissue of channel catfish. Incidence and epizootiology of the disease are presented....
Ground water in selected areas in the Klamath Basin, Oregon
A.R. Leonard, A.B. Harris
1973, Report
GROUNDWATER FEATURES OF SIX LOWLAND AREAS IN THE KLAMATH BASIN OF OREGON--KLAMATH MARSH AREA, AND SPRAGUE RIVER, SWAN LAKE, YONNA, POE, AND LANGELL VALLEYS--ARE DESCRIBED. RUGGED MOUNTAINS AND RIDGES SURROUND AND SEPARATE THESE LOWLANDS WHERE FLOORS RANGE IN ALTITUDE FROM 4,100 FEET IN POE...
History of salmon in the Great Lakes, 1850-1970
John W. Parsons
1973, Technical Paper 68
This history of the salmon in the Great Lakes describes the decline and extinction of the Atlantic salmon (Salmo salar) in Lake Ontario in the 1800's; the failure to establish, by salmon culture, permanent or sizable populations of Atlantic or Pacific salmon in any of the Great Lakes in 1867-1965;...
Studies on the collection, rearing, and biology of the blackfly (Cnephia ornithophilia)
I. Barry Tarshis
1973, Special Scientific Report - Wildlife 165
No abstract available....
Absolute stress measurements at the rangely anticline, Northwestern Colorado. Reply to Discussion by Nichols and Farrow
R. V. de la Cruz, C.B. Raleigh
1973, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (10) 757-759
[No abstract available]...
A new silicate intercomparison standard for 18O analysis
I. Friedman, J.D. Gleason
1973, Earth and Planetary Science Letters (18) 124
No abstract available....
The effects of methyltestosterone on sex reversal in bluegill
L. E. Chew, J.G. Stanley
1973, Progressive Fish-Culturist (35) 44-47
No abstract available. ...
Effects of radiation on a fenced population of horned lizards (Phrynosoma platyrhinos) in southern Nevada
P.A. Medica, F.B. Turner, D.D. Smith
1973, Journal of Herpetology (7) 79-85
Snowy owl predation on lapland longspur nestlings recorded on film
T. W. Custer
1973, The Auk (90) 433-435
During the summer of 1971 I investigated the breeding biology of the Lapland Longspur, Calcarius lapponicus, near Barrow, Alaska. To obtain data on incubation and feeding patterns of nesting longspurs, time-lapse cameras (Minolta Autopak-8 D6 super-8 movie cameras equipped with an Intervalometer-P time-lapse device) were positioned at several nests throughout...
18O 16O ratios in cherts associated with the saline lake deposits of East Africa
J. R. O’Neil, R. L. Hay
1973, Earth and Planetary Science Letters (19) 257-266
The cherts formed from sodium silicate precursors in East African saline, alkaline lakes have δ18O values ranging from 31.1 to 44.1. The δ18O values correlate in general with lake salinities as inferred from geologic evidence, indicating that most chert was formed...
A method to determine waterfowl shooting distances
D.A. Davenport, G.A. Sherwood, H. W. Murdy
1973, Wildlife Society Bulletin (1) 101-105
Long-range shooting at ducks and geese frequently results in a high crippling loss, unretrieved birds and frustrated hunters. A principal problem has been the general inability of hunters or observers to properly judge distance of birds. This paper describes a reasonably accurate method developed to determine shooting distances to geese....
Horned grebe breeding records in north-central South Dakota
Harold F. Duebbert, J. T. Lokemoen
1973, South Dakota Bird Notes (26) 428-437
Abstract has not been submitted...
Petrography and stratigraphy of glacial drift, Mesabi-Vermilion Iron Range area, northeastern Minnesota
Thomas C. Winter, R. D. Cotter, H. L. Young
1973, Bulletin 1331-C
Glacial deposits in the Mesabi-Vermilion Iron Range area consist of four major till units and associated glaciofluvial sediments. Particle-size data and pebble, heavy-mineral, clay-mineral, and percentage-soluble content were used in addition to field description of color and texture to describe and correlate the drift units. The lowermost till unit, basal till,...
River channel change with time : An example
Luna Bergere Leopold
1973, Geological Society of America Bulletin (84) 1845-1860
Monumented channel cross sections were resurveyed over a period of 20 yrs (1953 to 1972) to determine the amount and kind of change of channel area and position on a 3.7-sq-mi basin, Watts Branch near Rockville, Maryland. For the first 12 yrs, the channel progressively but slowly became smaller as...
Duck plague (duck virus enteritis) in wild waterfowl
Milton Friend, Gary L. Pearson
1973, Report
No abstract availablie....
Hair microanatomy of southwestern mammals
C. L. Douglas
1973, Report
No abstract available at this time...
