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Page 5853, results 146301 - 146325

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Selected ground-water data, Bonneville Salt Flats and Pilot Valley, western Utah
Gregory C. Lines
1978, Utah Basic-Data Release 30
This report contains ground-water data collected at wells and springs on the Bonneville Salt Flats and in Pilot Valley, western Utah. Most of the data were collected during a study of the hydrology and surface morphology of these two salt-crust areas during the period July 1975 - June 1977. The...
Selected uranium and uranium-thorium occurrences in New Hampshire
Wallace A. Bothner
1978, Open-File Report 78-482
Secondary uranium mineralization occurs in a northwest-trending fracture zone in the Devonian Concord Granite in recent rock cuts along Interstate Highway 89 near New London, New Hampshire. A detailed plane table map of this occurrence was prepared. Traverses using total gamma ray scintillometers throughout the pluton of Concord Granite identified...
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...
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...
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...
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...
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...
Feeding habitat use by colonially-breeding herons, egrets, and ibises in North Carolina
Thomas W. Custer, Ronald G. Osborn
1978, The Auk (95) 733-743
Nine species of herons, egrets, and ibises were followed by airplane from a nesting colony near Beaufort, North Carolina to their feeding sites. Except for Cattle Egrets, which flew exclusively to fields and dumps, the birds flew mainly to saltmarsh habitat. The selection of feeding habitats by Great Egrets and...
Seasonal trends in summer diet of the lapland longspur near Barrow Alaska USA
T. W. Custer, F.A. Pitelka
1978, The Condor (80) 295-301
Contents of lapland longspur [Calcarius lapponicus] stomachs and esophagi were sampled near Barrow, Alaska [USA], from May-Aug. in 1969, 1971, 1972 and 1973. Data from stomach contents were corrected for differential digestion of prey items. Longspurs shifted seasonally from larval to adult arthropods and back to larvae, responding to changes...