The relationship of geophysical measurements to engineering and construction parameters in the Straight Creek Tunnel pilot bore, Colorado
J. H. Scott, F. T. Lee, R. D. Carroll, C. S. Robinson
1968, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts (5) 1-30
Seismic-refraction and electrical-resistivity measurements made along the walls of the Straight Creek Tunnel pilot bore indicate that both a low-velocity and a high-resistivity layer exist in the disturbed rock surrounding the excavation. Seismic measurements were analyzed to obtain the thickness and seismic velocity...
SrRbK and Sr isotopic relationships in ultramafic rocks, southeastern Alaska
M. A. Lanphere
1968, Earth and Planetary Science Letters (4) 185-190
Geologic evidence suggests that a series of ultramafic complexes of the ‘Duke Island type’ located along a 560 km-long belt in southeastern Alaska crystallized from magmas of ultramafic composition. Some geologists have proposed that these magmas were derived by fractional fusion of...
Ground-water discharge from the Edwards and associated limestones, San Antonio area, Texas, 1967
Paul Rettman
1968, Edwards Underground Water District Bulletin 17
No abstracts available....
Records of precipitation, aquifer head, and ground-water recharge to the Edwards and associated limestones, San Antonio area, Texas, 1967
Paul Rettman
1968, Edwards Underground Water District Bulletin 18
No abstracts available....
Tertiary volcanic stratigraphy in the Powderhorn-Black Canyon region, Gunnison and Montrose Counties, Colorado
Jerry Chipman Olson, David Carl Hedlund, Wallace R. Hansen
1968, Bulletin 1251-C
No abstract available....
Geology and ground-water resources of Fillmore County, Nebraska, with a section on chemical quality of the water
Charles Franklin Keech, V. H. Dreeszen, L. R. Petri
1968, Water Supply Paper 1839-L
Fillmore County, an area 24 miles square, lies in the eastern part of the Nebraska loess plain. Although tributaries of the Big Blue River have eroded valleys into this plain, much of the original surface is intact. Broad flats and numerous shallow undrained depressions characterize the plain. The county is...
Reward banding to determine reporting rate of recovered mourning dove bands
R. E. Tomlinson
1968, Journal of Wildlife Management (32) 6-11
Reward bands placed on the other leg of certain regularly banded immature mourning doves (Zenaidura macroura) were used to develop information on reporting rates of recovered dove bands. Reports from 15 widely separated sections of the United States showed considerable variation in recovery rate of doves both with and without...
Water quality of streams tributary to Lakes Superior and Michigan
Jerome W. Zimmerman
1968, Special Scientific Report - Fisheries 559
Water quality of streams tributary to Lakes Superior and Michigan was analyzed for 142 stations on 99 streams tributary to Lake Superior and 83 stations on 56 streams tributary to Lake Michigan during 1962-65. Concentrations of aluminum, copper, and iron were not affected greatly by flow or season. Magnesium, calcium,...
Geology and hydrology of a proposed site for burial of solid radioactive waste southeast of Beatty, Nye County, Nevada
Alfred Clebsch Jr.
R.J. Morton, editor(s)
1968, Report, Land burial of solid radioactive wastes - Study of commercial operations and facilities (Atomic Energy Commission, Report WASH-1143)
No abstract available....
Design and construction of a dual recharge system at Minot, North Dakota
Wayne A. Pettyjohn
1968, Groundwater (6) 4-8
In 1965, a ground-water recharge facility was constructed and placed in operation to forestall an impending water shortage at Minot, North Dakota. The facility is unique in that the rate of recharge to a buried sand and gravel aquifer is augmented by perforating an overlying bed of clay using hydraulic...
Gas chromatographic separation and quantitative estimation of barbiturate mixtures in solid dosage forms
J. L. Allen
1968, Journal of the Association of Official Analytical Chemists (51) 619-621
A gas chromatographic method has been described for the analysis of mixed barbiturates in solid dosage forms. Analysis on a 10% SE-30 column gave good separations for butabarbital, amobarbital, secobarbital, pentobarbital, and/or phenobarbital; amobarbital is not separated adequately from pentobarbital. An internal standard, mephobarbital, is used to minimize injection errors....
Electrophoretic separation of fish brain esterases
Charles O. Knowles, Suresh K. Arurkar, James W. Hogan
1968, Journal of the Fisheries Research Board of Canada (25) 1517-1519
Fish brains were homogenized in an all-glass Potter-Elvehjem-type tissue grinder in 40% sucrose solution. The homogenate concentration was 10 brains/ml for both the bluegill and channel catfish. The brei was centrifuged at 34,700 g for 30 min at 5 C, and 30 J.lliters of the supernatant were used per column...
Movements of adult lake trout in Lake Superior
Jerold F. Rahrer
1968, Transactions of the American Fisheries Society (97) 481-484
Returns from mature lake trout (Salvelinus namaycush) tagged in western Lake Superior in 1959 and 1962-65 described here suggest that trout disperse widely from the spawning grounds after spawning and return in subsequent years. Although the data were not extensive, returns from lake trout tagged near Keweenaw Point in 1950...
Comparative embryology of five species of lampreys of the upper Great Lakes
Allen J. Smith, John H. Howell, George W. Piavis
1968, Copeia (1968) 461-469
The four species of lampreys native to the upper Great Lakes (American brook lamprey, Lampetra lamotteni; chestnut lamprey, Ichthyomyzon castaneus; northern brook lamprey, I. fossor; and silver lamprey, I. unicuspis) were collected in various stages of their life cycle and maintained in the laboratory until sexually mature. Secondary sex characters...
Turnover and urinary excretion of free and acetylated MS-222 rainbow trout, Salmo gairdneri
J. B. Hunn, R.A. Schoettger, W. A. Willford
1968, Journal of the Fisheries Research Board of Canada (25) 25-31
Rainbow trout (Salmo gairdneri) anesthetized in 100 mg/liter of M.S. 222 at 12 C excreted the drug in free and acetylated forms via the urine during a 24-hr recovery period in freshwater. Of the M.S. 222 excreted, 77-96% was acetylated. Blood levels of free drug in anesthetized trout approximated 75%...
Activity product constant of cryolite at 25°C and one atmosphere using selective-ion electrodes to estimate sodium and fluoride activities
C. E. Roberson, J.D. Hem
1968, Geochimica et Cosmochimica Acta (32) 1343-1351
The activity product constant of cryolite (Na3AlF6) at 25°C and 1 atm total pressure was calculated from data for solutions from which synthetic cryolite or mixtures of cryolite and a solid apparently related to ralstonite had precipitated. The activities of fluoride and of sodium were estimated using specific ion...
Alaska Railroad Terminal Reserve, Anchorage, soil-stability study: Stability in the vicinity of boring lines 1 and 2
David J. Varnes
1968, Open-File Report 68-310
This report has been prepared in response to a request dated April 22, 1966, from the General Manager of The Alaska Railroad to the Director, U.S. Geological Survey, for an evaluation of the propriety of continued industrial expansion on land contained within The Alaska Railroad Terminal Reserve and nearby. It...
Paleomagnetism and the compositions of highly-oxidised iron-titanium oxides in basalts
P.J. Smith
1968, Physics of the Earth and Planetary Interiors (1) 88-92
As a preliminary step towards determination of the source of the natural remanence in highly-oxidised basalt lava flows, electron probe microanalysis has been carried out on the two main phases in each of two types of highly-oxidised iron-titanium oxide. The discovery of the source of NRM in these basalts is...
Measurement of geothermal flux through poorly consolidated sediments
J.H. Sass, R. J. Munroe, A.H. Lachenbruch
1968, Earth and Planetary Science Letters (4) 293-298
In many regions, crystalline rocks are covered by hundreds of meters of unconsolidated and poorly consolidated sediments. Estimates of heat flux within these sediments using standard continental techniques (temperature and conductivity measurements at intervals of 10 to 30 meters) are unreliable, mainly...
Nuclear magnetic resonance studies of phosphorus(v) pesticides. Part I. Chemical shifts of protons as a means of identification of pesticides
H. Babad, W. Herbert, M. C. Goldberg
1968, Analytica Chimica Acta (41) 259-268
Correlations of structural and proton chemical-hift data for 40 commercial phosphorus(V) pesticides are reported. Correlations of structure with the phosphorus coupling constants are discussed, and general trends are noted which aid in the use of NMR as a tool for identification and analysis of phosphorus(V)...
Surface area of montmorillonite from the dynamic sorption of nitrogen and carbon dioxide
Josephus Thomas Jr., Bruce F. Bohor
1968, Clays and Clay Minerals (16) 83-91
Surface area determinations were made on a montmorillonite with various cations emplaced on the exchangeable sites, utilizing nitrogen and carbon dioxide as adsorbates at 77°K and 195°K, respectively, in a dynamic system. From the fraction of a Mississippi montmorillonite less than about 1 μ in size, samples were prepared by replacing...
Tree leaf control on low flow water quality in a small Virginia stream
K. V. Slack, H.R. Feltz
1968, Environmental Science & Technology (2) 126-131
No abstract available....
Mineralogy as a function of depth in the prehistoric Makaopuhi tholeiitic lava lake, Hawaii
B.W. Evans, J.G. Moore
1968, Contributions to Mineralogy and Petrology (17) 85-115
The electron probe X-ray microanalyzer has been used to determine the compositional variability of the groundmass minerals and glass in 10 specimens from a complete 225-foot section of the prehistoric tholeiitic lava lake of Makaopuhi Crater, Hawaii. The order of beginning of crystallization was: (1) chromite, (2) olivine, (3) augite,...
Simultaneous determination of tantalum and hafnium in silicates by neutron activation analysis
L. P. Greenland
1968, Analytica Chimica Acta (42) 365-370
A neutron activation procedure suitable for the routine determination of tantalum and hafnium in silicates is described. The irradiated sample is fused with sodium peroxide and leached, and the insoluble hydroxides are dissolved in dilute hydrofluoric acid-hydrochloric acid. After LaF3 and AgCl scavenges, tantalum and hafnium...
Geologic history of the continental margin of North America in the Bering Sea
D.W. Scholl, E. C. Buffington, D.M. Hopkins
1968, Marine Geology (6) 297-330
The North American continental margin beneath the Bering Sea is nearly 1,300 km long and extends from Alaska to eastern Siberia. The margin is a canyon-scarred 3,200–3,400-m high escarpment separating one of the world's largest epicontinental seas (the shallow Bering Sea) and the...
