Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

164482 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 6004, results 150076 - 150100

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Geothermal brine well: Mile-deep drill hole may tap ore-bearing magmatic water and rocks Undergoing Metamorphism
D. E. White, E.T. Anderson, D.K. Grubbs
1963, Science (139) 919-922
A deep geothermal well in California has tapped a very saline brine extraordinarily high in heavy metals and other rare elements; copper and silver are precipitated during brine production. Preliminary evidence suggests that the brine may be pure magmatic water and an active ore-forming solution. Metamorphism of relatively young rocks...
Uranyl ion coordination
H. T. Evans Jr.
1963, Science (141) 154-158
A review of the known crystal structures containing the uranyl ion shows that plane-pentagon coordination is equally as prevalent as plane-square or plane-hexagon. It is suggested that puckered-hexagon configurations of OH - or H2O about the uranyl group will tend to revert to plane-pentagon coordination. The concept of pentagonal coordination...
Applications of geohydrologic concepts in geology
G. B. Maxey, J. E. Hackett
1963, Journal of Hydrology (1) 35-45
Subsurface water, an active agent in many geologic proceses, must be considered in interpreting geologic phenomena. Principles of the occurrence, distribution, and movement of subsurface waters are well established and readily applicable. In many interpretations in geologic literature, geohydrologic principles have been employed realistically, but in many others these principles...
Releasing-addition method for the flame-photometric determination of calcium in thermal waters
J.J. Rowe
1963, Geochimica et Cosmochimica Acta (27) 915-923
Study of the interferences of silica and sulfate in the flame-photometric determination of calcium in thermal waters has led to the development of a method requiring no prior chemical separations. The interference effects of silica, sulfate, potassium, sodium, aluminum, and phosphate are overcome by an addition technique coupled with the...
New chemical determinations of zinc in basalts, and rocks of similar composition
L. F. Rader, W. C. Swadley, C. Huffman Jr., H. H. Lipp
1963, Geochimica et Cosmochimica Acta (27) 695-714
New determinations of zinc in 124 basalts by the chemical method described (Huff-Manet al. 1963) are reported. Average zinc values, in per cent, for basalts from diverse regions are as follows: Idaho, 28 samples, 0.013; Hawaii, 33 samples, 0.010; Connecticut, 27 samples, 0.0090; Oregon, 17 samples, 0.0081; California, 8 samples,...
Selected hydrologic data, Tooele Valley, Tooele County, Utah
Joseph S. Gates
1963, Utah Basic-Data Report 7
This report is intended to serve two purposes: (1) to make available to the public basic ground-water data useful in planning and studying development of water resources, and (2) to supplement an interpretive report that will be published later.Records were collected during the period 1958-63 by the U.S. Geological Survey...
Association and determinacy in geomorphology
Luna Bergere Leopold, Walter Basil Langbein
Claude C. Albritton Jr., editor(s)
1963, Book chapter, The fabric of geology
You find a rock. It looks like an ordinary piece of flint, broken and rough. On a part of it is a patina whose soft grey color contrasts with the shiny brownish surfaces of conchoidal fracture. You could have found this rock in nearly any kind of an environment almost...
Publications on fish parasites and diseases, 330 B.C.-A.D. 1923
E.A. McGregor
1963, Report
These references were collected in 1924, but until now this collection has been available only in manuscript:fbrm. Because of the current increased interest in this field, this bibliography is being issued to make it more generally accessible. They include the earliest known references to fish parasites (330 B. C.) as...
Conversations on ecology IV
Luna Bergere Leopold
1963, The Garden Journal: Journal of the New York Botanical Garden (13) 141-142
The conversations on ecology have mentioned the pesticide problem, and in such discussion it is easy to lose sight of the basic philosophic view which is an undercurrent in Miss Carson's book. I should like to expand on that philosophic premise and examine some of its implications for planning vegetation...
Phosphate glass electrode with good selectivity for alkaline-earth cations
A.H. Truesdell, A. M. Pommer
1963, Science (142) 1294-1295
A phosphate glass has been found to have a significant electrode specificity toward alkaline-earth ions. The order of selectivity is 2H + > Ba++ > Sr++ > Ca++ > 2K+ > 2Na+ > Mg++. Exchange properties are discussed in relation to possible structure. Its use to determine activity of Ca++...
Antiferromagnetism of UO2⋅2H2O
T. Pankey, F. E. Senftle, F. Cuttitta
1963, Journal of Chemical Physics (39) 1702-1706
Magnetic susceptibility measurements have been made on UO2·xH2O for x=1.78 to x=2.13, and from 77° to 375°K. As the value of x decreased the susceptibility increased. Both these data and structural arguments imply that the formula of this compound is U(OH)4 rather than the dihydrate form. Based on this concept the data have been corrected...
Isotopic fractionation of uranium in sandstone
J.N. Rosholt, W. R. Shields, E. L. Garner
1963, Science (139) 224-226
Relatively unoxidized black uranium ores from sandstone deposits in the western United States show deviations in the uranium-235 to uranium-234 ratio throughout a range from 40 percent excess uranium-234 to 40 percent deficient uranium-234 with respect to a reference uranium-235 to uranium-234 ratio. The deficient uranium-234 is leached preferentially to...
Unmineralized fossil bacteria
W. H. Bradley
1963, Science (141) 919-921
Unmineralized bacterial cells, mostly Micrococcus sp., but including also Streptococcus sp. and Actinomyces sp., were found in enormous numbers in lake beds of the Newark Canyon Formation of Early Cretaceous age, Eureka County, Nevada. The micrococci are black, and have an average diameter about 0.5 µ. Similar black micrococci (0.4...
Study of multicomponent mixtures in solution with a vertical-axis transmission-type filter-fluorometer
M. H. Fletcher
1963, Analytical Chemistry (35) 278-288
Fluorescence intensity, sensitivity, and the effect of diverse ions are discussed in relation to chemical equilibrium and the general equation for fluorescence. High sensitivity is the common denominator in eliminating or reducing all types of interference and the general equation is the key for quickly selecting conditions that give maximum...
Surface material of the moon
C.R. Warren
1963, Science (140) 188-190
A skeletal fuzz that consists mostly of open space probably covers the moon to a depth of several millimeters or centimeters. The solid part of the fuzz probably consists of randomly oriented linear units, with or without enlarged nodes, which either anastomose in a mesh or are branching....
Age and growth of the whitefish in Lake Superior
William R. Dryer
1963, Fishery Bulletin (63) 77-95
The average annual commercial production of whitefish in the U.S. waters of Lake Superior dropped from 2,194,000 pounds in 1879-1908 to 504,000 pounds in 1911-59. The modern production, though far below the earlier, has accounted for more than 10 percent of the total value of the fishery in all...