Geology and nickel mineralization of the Julian-Cuyamaca area, San Diego County, California
S.C. Creasey
1946, California Journal of Mines and Geology (42) 15-29
The Julian-Cuyamaca area is in the San Diego Mountains, one of the Peninsular Ranges of southern California. It lies in San Diego County, about 3 miles south of Julian, and approximately 60 miles northeast of San Diego. The area was mapped, and its nickel mineralization studied, from March to...
Radial flow in a leaky artesian aquifer
C. E. Jacob
1946, Eos, Transactions, American Geophysical Union (27) 198-208
A partial differential equation is set up for radial flow in an elastic artesian aquifer into which there is vertical leakage in proportion to the drawdown. This differential equation is integrated to obtain two steady state solutions, one for the case of a well in an infinite aquifer, and the...
Report of Committee on Runoff—1944–1945
R. W. Davenport
1946, Eos, Transactions, American Geophysical Union (27) 121-123
The membership of the committee has been selected to afford good representation of geographic sections and of organizations engaged in runoff research. Some new members were added during the year in order to strengthen the representation of the committee in certain phases of runoff research. Norbert H. Leupold submitted his...
Minerals and mineral relationship of the clay minerals
Clarence S. Ross
1945, Journal of the American Ceramic Society (28) 173-183
The invitation to be the Edward Orton, Jr., Fellow Lecturer of the American Ceramic Society for 1945 is a very great honor and a privilege which one interested in the mineralogy of clays must heartily appreciate. Dr. Orton was a geologist as well as a founder of this Society, and...
Appendix A—Progress report of the subcommittee on permeability
Walter B. Langbein
1944, Eos, Transactions, American Geophysical Union (25) 721-722
A variety of units and names of units relating to permeability have been used and are being used by different investigators. This Sub‐Committee was recently organized to provide an open forum for persons of different background and experience to present their views in an orderly manner. Thirteen members representing diverse...
The fluorspar deposits of Saint Lawrence, Newfoundland
Ralph Erskine Van Alstine
1944, Economic Geology (39) 109-132
Fluorspar from Newfoundland, eighth ranking producer of the world, comes entirely from the St. Lawrence district. Here pre-Cambrian lavas and pyroclastics, Cambrian sedimentary rocks, Ordovician (?) volcanic and sedimentary rocks, and a Paleozoic alaskite-granite comprise the bedrock.Epithermal fluorite veins occupy steeply dipping fault fissures in granite, rhyolite porphyry, and lamprophyre....
"Ribbon rock", an unusual beryllium-bearing tactite
R. H. Jahns
1944, Economic Geology (39) 173-205
The beryllium deposits at Iron Mountain, near the northern end of the Sierra Cuchillo in Sierra and Socorro Counties, New Mexico, are unusual products of contact metamorphism. They occur in irregular bodies of tactile formed by replacement of Paleozoic limestone, generally at or near contacts with small intrusive masses of...
Correlation of ground‐water levels and precipitation on Long Island, New York
C. E. Jacob
1943, Eos, Transactions, American Geophysical Union (24) 564-573
Long Island simulates in a general way an aquifer in the form of an infinite strip confined between parallel boundaries at constant head (sea‐level), over which recharge precipitation is assumedly uniform. The non‐steady flow of water in this idealized system is analyzed assuming provisionally that the effective thickness of saturated...
The Finley Site: Antiquity of the Finley Site
John T. Hack
1943, American Antiquity (8) 235-241
This report is based on two months reconnaissance in the summer of 1941 in the Eden Valley, Wyoming. The work is as yet far from complete and the conclusions presented here must be regarded as tentative. It is hoped that in the future more extensive geological work may be undertaken.The...
A method for determining transmissibility‐ and storage‐coefficients by tests of multiple well‐systems
Leland K. Wenzel, A.L. Greenlee
1943, Eos, Transactions, American Geophysical Union (24) 547-564
Ground‐water has long been recognized as one of our important natural resources, but only in about the last 20 years has concentrated effort been made to place ground‐water hydrology on a quantitative basis. The quantitative approach to ground‐water work has been brought about largely through the leadership of O. E....
Report of Committee on Runoff, 1942–43
W. G. Hoyt, Bertram Barnes, H.B.S. Cooke, E.S. Cullings, G.A. Hathaway, Karl R. Jetter, N.H. Leupold, Phillip Light, C. C. McDonald, F.T. Mavis, L.K. Sherman, Waldo E. Smith, F. Snyder, H.G. Wilm
1943, Eos, Transactions, American Geophysical Union (24) 422-423
The Committee on Runoff was not formally constituted until February 6, 1943, when the members of the Section, as listed above, were asked to serve. At the suggestion of President CHURCH the Committee has been so selected that there is Nation‐wide geographic distribution from West to East with the majority...
Appendix C—Report on research in the field of ground water being conducted by oil companies
N.A. Rose
1943, Eos, Transactions, American Geophysical Union (24) 420-421
In view of the shortness of time since the appointment of the writer to the Committee on Ground Water this report is confined to the technology and problems in the Gulf Coast Oil Province. Of course, many of the methods and practices would apply to most parts of the country...
Structural determinations from diamond drilling
John Beaver Mertie
1943, Economic Geology (38) 298-312
Several problems may arise in the geometrical determinations of strike and dip from core drilling. If the stratigraphic or structural surfaces are plane, as the bedding planes of a homocline, two problems may exist, depending upon whether the drill cores do or do not penetrate to some recognizable horizon. The...
The age, growth, and bathymetric distribution of Reighard's chub, Leucichthys reighardi koelz, in Lake Michigan
1943, Transactions of the American Fisheries Society (72) 108-135
Reighard's chub has come to be one of the most important species of the group since the serious decline in abundance of the larger representatives of the genus Leucichthys in Lake Michigan. An understanding of the biology of as many species of chubs as possible is essential if further...
Hydraulic criteria for sand‐waves
Walter B. Langbein
1942, Eos, Transactions, American Geophysical Union (23) 615-619
Sand‐waves on rivers are rhythmic successions of waves which occur at flood‐stages of streams heavily loaded with sediments. They take their name from the fact that sand and associated silts and gravels form a large part of the load transported by a river at such times. They seem to be...
Observations on the natural and artificial propagation of the smallmouth black bass, Micropterus dolomieu
E. W. Surber
1942, Transactions of the American Fisheries Society (72) 233-245
Counts of smallmouth black bass nests in the same sections of the South Branch of the Potomac, the Cacapon, and the Shenandoah Rivers are reported over a period of several seasons. The 4‐year record for the South Branch of the Potomac indicates little change in the smallmouth black bass population....
Application of coefficients of transmissibility and storage to regional problems in the Houston District, Texas
W.F. Guyton
1941, Eos, Transactions, American Geophysical Union 756-770
The Houston District, as the term is used in this paper, comprises an area between the Trinity and Brazos rivers in Harris County and parts of Montgomery, Waller, and Fort Bend counties, Texas. It consists of a plain of low relief that lies not far above sea‐level, and is a...
Report of committee on runoff, 1940–41
W. G. Hoyt
1941, Eos, Transactions, American Geophysical Union (22) 1014-1015
The Committee members are the same as last year, namely: H. K. Barrows; Merrill Bernard; E. S. Cullings; R. S. Goodridge; G. A. Hathaway; Joseph Jacobs; F. T. Havis; H. S. Riesbol; Waldo E. Smith; F. F. Snyder; and H. G. Wilm.During the year one addition was made, namely, AURELIO...
An evaluation of trout culture
1940, Transactions of the American Fisheries Society (69) 85-89
In an evaluation of the efficiency of trout culture, the author presents a detailed analysis of complete loss records from 288 individual lots of trout at twenty-two hatcheries in the western United States. Summarized data are given to show the percentage loss of eggs, fry, and fingerlings by progressive one-half...
Formalin for external protozoan parasites: A report on the prevention and control of Costia necatrix
Frederick S. Fisher
1940, Progressive Fish-Culturist (7) 1-10
The smallest and most destructive of the ectoparasitic protozoans infecting salmon and trout, Costia necatrix, has unfortunately been relegated to virtual obscurity during the past few years. Few references to this parasite can be found in the recent literature and, where such things are discussed, one seldom hears a mention of Costia...
Glacial chronology of the Southern Rocky Mountains
L.L. Ray
1940, Geological Society of America Bulletin (51) 1851-1917
In order to extend the chronology and validate the five substages of the Wisconsin glaciation recognized in the Cache la Poudre Valley in the Colorado Front Range, a reconnaissance was made of the Southern Rocky Mountains, from southern Wyoming to Santa Fe, New Mexico. The chronology determined in the Cache...
A brief review of ground‐water conditions in Michigan
Charles L. McGuinness
1940, Eos, Transactions, American Geophysical Union (21) 1122-1126
The State of Michigan makes up about one‐half of the area of the great Michigan Synclinal Basin, the remainder of which embraces Lakes Michigan and Huron and small parts of Wisconsin, Illinois, Indiana, Ohio, and Ontario [see 1 (p. 7) of “References” at end of paper]. The Basin has characteristics...
Ground-water resources of Kansas
R.C. Moore, S. W. Lohman, J.C. Frye, H.A. Waite, Thad G. McLaughlin, Bruce Latta
1940, Kansas Geological Survey Bulletin (1940) 1-112
Introduction: Water is a necessity of life. Accordingly, every person is deeply interested in the subject of water supply. He knows that he must have water to drink. He depends indirectly on water for all his food and clothing. He may want water in which to wash. Civilized man has...
Ground water in the Oklahoma Panhandle
S.L. Schoff
1940, Economic Geology (35) 534-545
An investigation begun in 1937 by the United States and the Oklahoma Geological Surveys, has shown that the depth to the water table in the Oklahoma Panhandle ranges from less than 25 feet in parts of major valleys to about 3oo feet in parts of the uplands. In 8 upland...
Scyphidia micropteri, a new protozoan parasite of largemouth and smallmouth black bass
E. W. Surber
1940, Transactions of the American Fisheries Society (69) 169-175
A small urn‐shaped peritrichous protozoan, apparently an undescribed species, was found on the gills and bodies of largemouth and smallmouth black bass in ponds at Leetown, West Virginia. A heavy mortality among a lot of fingerling largemouth bass probably resulted from suffocation due to the organisms on the gills. Specimens...
