Fluctuations in concentration of dissolved solids of some southwestern streams
J.D. Hem
1948, Eos, Transactions, American Geophysical Union (29) 80-84
The concentration of dissolved solids in waters of streams of the Southwestern United Stated fluctuates widely as the stream discharge changes. These fluctuations may be extensive in a period of a few days or even a few hours. Data in this paper show the extent of the day‐to‐day changes in...
Geology and ground-water resources of Iwo Jima
F. A. Swenson
1948, GSA Bulletin (59) 995-1008
Iwo Jima, in the western Pacific Ocean, consists of Motoyama, a broad volcanic cone, at the north, and Mt. Suribachi at the south, with an undulating isthmus between. Motoyama is largely light-gray-buff tuff. A thick andesitic lava flow under Suribachi, exposed in several places, is overlain by a thick deposit...
Reefs of Bikini, Marshall Islands
J. I. Tracey Jr., H.S. Lapham, J. E. Hoffmeister
1948, GSA Bulletin (59) 861-878
Systematic surveys made at Bikini before and after the atomi bomb tests (Operation Crossroads) in the summer of 1946 afforded an unusual opportunity to examine the reefs and islands of one of the larger atolls of Micronesia. The existing reef appears to be developed on an older surface that extends...
Mineralogy and petrology of the currant creek magnesite deposits and associated rocks of Nevada
George T. Faust, Eugene Callaghan
1948, GSA Bulletin (59) 11-74
Cryptocrystalline magnesite occurs as relatively small dense, white masses in a Tertiary volcanic tuff, here named the Currant tuff, in White Pine and Nye counties, 29 miles southwest of Ely, Nevada. The deposits are small, but some of the magnesite is of very high quality with almost no iron or...
Report of the Research Committee on Runoff, 1947–1948
C. C. McDonald
1948, Eos, Transactions, American Geophysical Union (29) 923-926
Since 1946, the Committee has given consideration to terminology as related to the field of runoff. As the science of hydrology develops, there is increasing need for a more definite and uniform terminology in order to promote use of more precise language in technical literature. While it may not be...
Report of Committee on Ground Water, 1945–1946
S. W. Lohman
1948, Eos, Transactions, American Geophysical Union (29) 117-123
The principal activity of the Committee during the year was the arranging and presentation of a symposium on methods of estimating ground‐water supplies. The response was gratifying and resulted in the presentation of 11 interesting papers at the 1946 meeting. The report of the Subcommittee on Permeability by C. E....
Development of limestone reservoirs in Comal County, Texas
W.O. George
1948, Eos, Transactions, American Geophysical Union (29) 503-510
The Edwards limestone, and to a lesser extent the Comanche Peak limestone and the lower part of the Glen Rose limestone below, all of Lower Cretaceous age, form one of the most extensive ground‐water reservoirs in Texas. As a result of normal faulting, these formations are connected by underground channels...
Hydrology of limestone terrane in Schoharie County, New York
Jean Milton Berdan
1948, Eos, Transactions, American Geophysical Union (29) 251-253
During the summer of 1946 the writer studied the ground‐water resources of Schoharie County, New York, as a part of the program of ground‐water investigation being carried on in cooperation between the United States Geological Survey and the New York State Water Power and Control Commission. Because the outcrop belt...
Report of Research Committee on Runoff, 1946–1947
R. W. Davenport
1948, Eos, Transactions, American Geophysical Union (29) 263-265
The membership of the Committee has remained unchanged during the year. There has been some discussion of committee activities between individual members and in small groups. The further discussion of runoff terminology has resulted in no new developments of special note.The following statements have been received from members of the...
Runoff from rain and snow
A. M. Piper
1948, Eos, Transactions, American Geophysical Union (29) 511-524
The basic principles of the idealized hydrologic cycle are reviewed with emphasis on storage and movement of water in the soil. A distinction is made between ground‐water runoff and overland runoff in terms of storage and lag, expressed as accumulated deviations from uniform flow over a period of several years....
Trends in runoff in the Pacific Northwest
C. C. McDonald, W. B. Langbein
1948, Eos, Transactions, American Geophysical Union (29) 387-397
The diminution in runoff in the Pacific Northwest, particularly the Columbia River Basin, during the past 50 years, and its hydrologic significance are discussed in this paper. An analysis of the rainfall‐runoff relations for the Basin is made in order to explain the different influence of short‐ and long‐term precipitation...
Quality of water in the northwest
C. S. Howard
1948, Eos, Transactions, American Geophysical Union (29) 379-383
AbstractThe quality of natural waters, as judged by the dissolved mineral content, is quite varied throughout the Northwest. The concentrations of dissolved solids range from less than 50 ppm for many of the surface waters in Washington and Oregon, to several thousand ppm in...
Effect of water temperature on flow of a natural stream
William Stewart Eisenlohr Jr.
1948, Eos, Transactions, American Geophysical Union (29) 240-242
Approximately three per cent of the variation in streamflow of the Kootenai River near Copeland, Idaho, has been found to be associated with variation in water temperature. This has been determined by correlation analysis of residuals in streamflow that were not accounted for by either gage height or slope....
Notes on the Archaeology of the Utukok River, Northwestern Alaska
Raymond M. Thompson
1948, American Antiquity (14) 62-65
Early in May 1947, a United States Geological Survey field party of five was flown by ski plane to the headwaters of the Utukok River in northwestern Alaska, about 200 miles southwest of Barrow. Three 18–foot canvas boats of a special folding design were taken in along with enough equipment...
Heavy metals in altered rock over blind ore bodies, East Tintic District, Utah
Thomas Seward Lovering, V.P. Sokoloff, Hal T. Morris
1948, Economic Geology (43) 384-399
Standard chemical tests and spectroscopic analyses of altered Tertiary lavas that occur above blind ore bodies in the East Tintic district, Utah, have failed to show any evidence of the mineralization in the underlying dolomites. A new technique involving dithizone was used in the field to test ammonium acetate extracts...
Distribution of coastal black-sands in North Carolina, South Carolina, and Georgia, as mapped from an airplane
V.E. McKelvey, James R. Balsley
1948, Economic Geology (43) 518-524
Black-sand beach concentrates are more widely distributed along the beaches of North Carolina, South Carolina, and Georgia than has been recorded heretofore, as shown by a map prepared by airplane reconnaissance. The map shows also that the black sands diminish in abundance northward, that their distribution is in part related...
The bedding-replacement fluorspar deposits of Spar Valley, Eagle Mountains, Hudspeth County, Texas
Elliot Gillerman
1948, Economic Geology (43) 509-517
The Spar Valley fluorspar district in the Eagle Mountains, Hudspeth County, Texas, is one of the few in the western United States containing bedding-replacement fluorspar deposits. The deposits at Spar Valley resemble the bedding-replacement deposits of the Cave in Rock fluorspar district of southern Illinois. Two distinct deposits, the North...
Ground-water investigations in the United States
A.N. Sayre
1948, Economic Geology (43) 547-552
No abstract available....
A sensitive field test for heavy metals in water
Lyman C. Huff
1948, Economic Geology (43) 675-684
A semiquantitative colorimetric analytical method using dithizone to detect traces of heavy metals in natural water is described. Although reagents of exceptional purity are required, only simple equipment is needed and the test can be made in a few minutes in the field. A combined mixed color and mono color...
Geology and ground water of the Casablanca Basin, Chile
G. C. Taylor Jr.
1948, Economic Geology (73) 661-674
"In the uplands the Cretaceous granodiorite and granite contain water in the weathered zones, and in joints and fractures. These yield small supplies of good water to springs and to shallow domestic and stock wells. The alluvial fill of the lowlands contains a zone of saturation that is sustained by...
Fall and winter food habits of deer in northeastern Minnesota
Shaler Eugene Aldous, Clarence F. Smith
1948, Wildlife Leaflet 310
No abstract available....
Mammals of northwestern Texas found in barn owl pellets
William H. Stickel, Lucille F. Stickel
1948, Journal of Mammalogy (29) 291-293
No abstract available. ...
Ground water hydraulics as a geophysical aid
John G. Ferris
1948, Technical Report 1
The publication of the non-equilibrium formula in 1935 in a paper by Theis marked the opening of a new era in the analysis and understanding of the hydraulics of percolating ground waters. Through the past decade 9 an ever-increasing number of engineers and geologists have become familiar-with the application of...
Batholith and associated rocks of Corona, Elsinore, and San Luis Rey quadrangles southern California
Esper S. Larsen Jr.
1948, GSA Memoirs
The batholith of Southern and Lower California is exposed continuously from near Riverside, California, southward for a distance of about 350 miles. In central Lower California it is covered in part by younger rocks, but discontinuous bodies extend to the southern end of Lower California, and hence the batholith is...
Muskrat investigations on the Blackwater National Wildlife Refuge, Maryland, 1941-1945
Herbert L. Dozier, M.H. Markely, L. M. Llewellyn
1948, Journal of Wildlife Management (12) 177-190
No abstract available. ...
