Biochemical identification of mallard-black duck hybrids through a breeding program and in nature
R.P. Morgan II, D. W. Meritt, S. B. Block, M. Cole
1978, Transactions of the Northeast Section of the Wildlife Society, Annual Fish and Wildlife Conference (35) 225-236
From 1974 to 1976, a breeding program was used to produce black duck-mallard hybrids for the evaluation of inheritance patterns of serum proteins and esterases. In addition to the initial crosses, a series of matings in 1975 and 1976 were designed to evaluate inheritance patterns in hybrid matings with either...
Predicting earthquakes along the major plate tectonic boundaries in the Pacific
H. Spall
1978, Earthquake Information Bulletin (USGS) (10) 20-25
In an article in the last issue of the Earthquake Information Bulletin ("Earthquakes and Plate Tectonics," by Henry Spall), we saw how 90 percent of the world's earthquakes occur at the margins of the Earth's major crustal plates. however, when we look at the distribution of earthquakes in detail, we...
Searching for seismic precursors to earthquakes in central California
R. L. Wesson
1978, Earthquake Information Bulletin (USGS) (10) 51-54
Gilbert White talks about natural hazards
H. Spall
1978, Earthquake Information Bulletin (USGS) (10) 16-19
Dr. Gilbert White is Director of the Institute of Behavioral Science at the University of Colorado, Boulder, where he is responsible for natural Hazards Research and Applications Information Center supported by the National Science Foundation. He served in the Executive Office of the president in 1941-42, on the Federal Flood...
How often will earthquakes recur on the San Andreas Fault?
R. E. Wallace
1978, Earthquake Information Bulletin (USGS) (10) 76-81
The relationship between magnitude and abundance of earthquakes, called a recurrence curve, has been derived for many regions of the world from seismographic records. AS an example, Clarence Allen and his associates at the California Institute of Technology have obtained recurrence rates for the southern California region by incorporating data...
Sea-level changes before large earthquakes
M. Wyss
1978, Earthquake Information Bulletin (USGS) (10) 165-168
Changes in sea level have long been used as a measure of local uplift and subsidence associated with large earthquakes. For instance, in 1835, the British naturalist Charles Darwin observed that sea level dropped by 2.7 meters during the large earthquake in Concepcion, CHile. From this piece of evidence and...
Radioactive disequilibrium in altered mid-oceanic basalts
M.P. Bacon
1978, Earth and Planetary Science Letters (39) 250-254
A young (<1 m.y.) tholeiitic basalt dredged from the Mid-Atlantic Ridge displays a234U excess and a230Th deficiency that have resulted from the addition of seawater uranium during weathering at seafloor temperatures. Two older samples, though they acquired substantial amounts of uranium...
Preservation of cycad and Ginkgo pollen
N. O. Frederiksen
1978, Review of Palaeobotany and Palynology (25) 163-179
Pollen grains of Ginkgo, Cycas, and Encephalartos were chemically treated together with pollen of Quercus, Alnus, and Pinus, the latter three genera being used as standards. The experiments showed that: (1) boiling the pollen for 8-10 hours in 10% KOH had little if any effect on any of the grains;...
An automated procedure for the simultaneous determination of specific conductance and pH in natural water samples
D. E. Eradmann, Howard E. Taylor
1978, Analytica Chimica Acta (99) 269-274
An automated, continuous-flow system is utilized to determine specific conductance and pH simultaneously in natural waters. A direct electrometric procedure is used to determine values in the range pH 4–9. The specific conductance measurements are made with an electronically modified, commercially available conductivity meter interfaced to a separate module containing...
Aeromagnetic map of northeastern Nevada
Water Resources Division, U.S. Geological Survey
1978, Open-File Report 78-280
No abstract available....
Underway seismic data collected on U.S.G.S. Cruise S6-77, southeastern Bering Sea
James V. Gardner, T.L. Vallier
1978, Open-File Report 78-322
No abstract available....
Coal resource occurrence and coal development potential maps of the Cooper Ridge NE quadrangle, Sweetwater County, Wyoming
Walter Danilchik
1978, Open-File Report 78-33
No abstract available....
Leasable mineral and waterpower land classification map of the Aztec quadrangle, New Mexico, Colorado
Donald A. DeCicco, E. D. Patterson, Gale A. Lutz
1978, Open-File Report 78-476
No abstract available....
The effectiveness of stream-sediment sampling along the Rio Ojo Caliente, New Mexico
Karen J. Wenrich-Verbeek
1978, Open-File Report 78-843
No abstract available....
Map of the Antelope Valley-East Kern Water Agency area, California, showing ground-water subunits and areas and well hydrographs
C. E. Lamb, M. J. McIntyre
1978, Open-File Report 78-435
The U.S. Geological Survey has released to the open file a map, scale 1:125,000, showing ground-water subunits and areas, and well hydrographs in the Antelope Valley-East Kern Water Agency area, California. ...
Determination of dissolved boron in fresh, estuarine, and geothermal waters by d.c. argon-plasma emission spectrometry
J.W. Ball, J. M. Thompson, Everett A. Jenne
1978, Analytica Chimica Acta (98) 67-75
A d.c. argon-plasma emission spectrometer is used to determine dissolved boron in natural (fresh and estuarine) water samples. Concentrations ranged from 0.02 to 250 mg l-1. The emission—concentration function is linear from 0.02 to 1000 mg l-1. Achievement of a relative standard deviation of ⩽ 3% requires frequent restandardization to...
Breeding bird populations of selected semipermanent wetlands in south-central North Dakota--1977
Gary L. Krapu, R.K. Green
1978, American Birds (32) 110-112
Abstract has not been submitted...
Significant earthquakes of the world, 1977
W. J. Person
1978, Earthquake Information Bulletin (USGS) (10) 105-108
Water-level changes and earthquake prediction
H. Spall
1978, Earthquake Information Bulletin (USGS) (10) 55-59
Waterfowl nesting on small man-made islands in prairie wetlands
R.F. Johnson Jr., R.O. Woodward, L.M. Kirsch
1978, Wildlife Society Bulletin (6) 240-243
Small islands constructed in prairie wetlands were attractive nesting sites for mallards (Anas platyrhynchos) and Canada geese (Branta canadensis). Nest densities of mallards on islands averaged 135 per ha compared to 0.03 per ha on adjacent upland habitats. Construction time averaged 2 hours per island and cost $50. No maintenance...
Geology and ground water in Door County, Wisconsin, with emphasis on contamination potential in the Silurian dolomite
Marvin G. Sherrill
1978, Water Supply Paper 2047
Door County is in northeastern Wisconsin and is an area of 491 square miles. The county forms the main body of the peninsula between Green Bay and Lake Michigan. The land surface is an upland ridge controlled by the underlying bedrock. The west edge of the ridge forms an escarpment...
Geologic interpretation of aeromagnetic maps of the coastal plain region of South Carolina and parts of North Carolina and Georgia
David L. Daniels, Isidore Zietz
1978, Open-File Report 78-261
No abstract available....
Strontium isotopes in basalts from the Pacific Ocean basin
C. E. Hedge
1978, Earth and Planetary Science Letters (38) 88-94
Basalts being erupted in the Pacific Ocean Basin vary in Sr isotopic composition in a simple geographic pattern. 87Sr/86Sr increases away from the East Pacific Rise to very high values for islands in the south-central Pacific. The 87Sr/86Sr variations are almost certainly related...
The potential source of lead in the Permian Kupferschiefer bed of Europe and some selected Paleozoic mineral deposits in the Federal Republic of Germany
K.H. Wedepohl, M.H. Delevaux, B. R. Doe
1978, Contributions to Mineralogy and Petrology (65) 273-281
New lead isotopic compositions have been measured for Paleozoic bedded and vein ore deposits of Europe by the high precision thermal emission (triple filament) technique. Eleven samples have been analyzed from the Upper Permian Kupferschiefer bed with representatives from Poland to England, three samples from the Middle Devonian Rammelsberg deposit...
Oblique map of the Kayak Trough
Tau Rho Alpha
1978, Open-File Report 78-464
No abstract available....
