A comprehensive system of automatic computation in magnetic and gravity interpretation
R.G. Henderson
1960, Geophysics (25) 569-585
In the interpretation of magnetic and gravity anomalies, downward continuation of fields and calculation of first and second vertical derivatives of fields have been recognized as effective means for bringing into focus the latent diagnostic features of the data. A comprehensive system has been devised for the calculation of any or all of these...
Geological age of the Claypool site, northeastern Colorado
H.E. Malde
1960, American Antiquity (26) 215-222
Artifacts related to the Cody complex occur in medium-grained sand that is spread as a blanket eolian deposit a few feet thick in the Claypool site area, Washington County, Colorado. The artifact-bearing sand lacks noticeable dunal topography and lies unconformably on marl of Yarmouth age and on waterlaid coarse sand and fine...
The chief oxide-burgin area discoveries, East Tintic district, Utah; A case history
J.B. Bush, D.R. Cook, T. S. Lovering, H. T. Morris
1960, Economic Geology (55) 1116-1147
The Burgin shaft is in the Chief Oxide area of the E. Tintic district, Utah, and is about a mile E. of any previously known ore bodies; workings from it are currently developing a substantial amount of commercial Pb-Zn ore in several blind ore bodies...
Deposits of the manganese oxides
Richard G. Petersen
1960, Economic Geology (55) 1-55
One of the problems of the wartime program of studies of domestic manganese deposits concerned the identification of, and modes of origin of the manganese oxide minerals. Of the hundreds of specimens of the oxides collected in the United States, the minerals of about 250...
Ground-water hydrology and glacial geology of the Kalamazoo area, Michigan
Morris Deutsch, K.E. Vanlier, P.R. Giroux
1960, Progress Report 23
The Kalamazoo report area includes about 150 square miles of Kalamazoo County, Mich. The area is principally one of industry and commerce, although agriculture also is of considerable importance. It has a moderate and humid climate and lies within the Lake Michigan “snow belt”. Precipitation averages about 35 inches per...
Geology and ground-water resources of the island of Kauai, Hawaii
Gordon A. Macdonald, Dan A. Davis, Doak C. Cox
1960, Bulletin 13
Kauai is one of the oldest, and is structurally the most complicated, of the Hawaiian Islands. Like the others, it consists principally of a huge shield volcano, built up from the sea floor by many thousands of thin flows of basaltic lava. The volume of the Kauai shield was on...
Effect of crystal thickness and geometry on the alpha-particle resolution of CsI (Tl)
P. Martinez, F. E. Senftle
1960, Review of Scientific Instruments (31) 974-977
The resolution of CsI(Tl) for Po210 alpha particles has been measured as a function of crystal thickness. The best resolution of a ½‐in. diam cylindrical crystal was obtained for a thickness of 0.38 mm, and the effect of thickness on the resolution is discussed. Based on the proposed model, a conical crystal...
Crystal structure refinement of reedmergnerite, the boron analog of albite
J. R. Clark, D.E. Appleman
1960, Science (132) 1837-1838
Ordering of boron in a feldspar crystallographic site T1(0) has been found in reedmergnerite, which has silicon-oxygen and sodium-oxygen distances comparable to those in isostructural low albite. If a simple ionic model is assumed, calculated bond strengths yield a considerable charge imbalance in reedmergnerite, an indication of the inadequacy of...
Determination of niobium in the parts per million range in rocks
F. S. Grimaldi
1960, Analytical Chemistry (32) 119-121
A modified niobium thiocyanate spectrophotometric procedure relatively insensitive to titanium interference is presented. Elements such as tungsten, molybdenum, vanadium, and rhenium, which seriously interfere in the spectrophotometric determination of niobium, are separated by simple sodium hydroxide fusion and leach; iron and magnesium are used as carriers for the niobium. Tolerance...
Ground-water conditions and storage capacity in the San Joaquin Valley, California
G. H. Davis, J. H. Green, F. H. Olmsted, D. W. Brown
1959, Water Supply Paper 1469
The San Joaquin Valley includes roughly the southern two-thirds of the Great Central Valley of California. It is a broad structural trough surrounded by mountains. The northern part of the valley drains through the San Joaquin River northward to San Francisco Bay ; the southern part of the valley normally...
Geology and ground-water resources of the upper Lodgepole Creek drainage basin, Wyoming, with a section on chemical quality of the water
Louis Jay Bjorklund, R. A. Krieger, E. R. Jochens
1959, Water Supply Paper 1483
The principal sources of ground-water supply in the upper Lodgepole Creek drainage basin-the part of the basin west of the Wyoming-Nebraska State line-are the Brule formation of Oligocene age, the Arikaree formation of Miocene age, the Ogallala formation of Pliocene age, and the unconsolidated deposits of Quaternary age. The Brule...
Hydrologic budget of the Beaverdam Creek basin, Maryland
W. C. Rasmussen, Gordon E. Andreasen
1959, Water Supply Paper 1472
A hydrologic budget is a statement accounting for the water gains and losses for selected periods in an area. Weekly measurements of precipitation streamflow, surface-water storage, ground-water stage, and soil resistivity were made during a 2year period, April 1, 1950, to March 28, 1952, in the Beaverdam Creek basin, Wicomico...
Study and interpretation of the chemical characteristics of natural water
John David Hem
1959, Water Supply Paper 1473
The chemical composition of natural water is derived from many different sources of solutes, including gases and aerosols from the atmosphere, weathering and erosion of rocks and soil, solution or precipitation reactions occurring below the land surface, and cultural effects resulting from activities of man. Some of the processes of...
Geology and ground-water resources of Medina County, Texas
Charles Lee Roy Holt
1959, Water Supply Paper 1422
The Edwards limestone of Cretaceous age is the principal water-bearing formation in Medina County and makes up the major part of a ground-water reservoir, or aquifier, which in places includes thinner limestone formations both above and below the Edwards. The Glen Rose limestone, also of Cretaceous age, yields moderate amounts...
A field method of spectrographic analysis for use in geochemical exploration work
Uteana Oda, A.T. Myers, E.F. Cooley
1959, Open-File Report 59-91
The method to be described is a modification of an earlier method of semiquantitative procedure. Through its use 34 elements can be determined simultaneously in one sample, which may be a rock, soil, mineral, or an ore. For many of these elements concentration ranges from one to ten thousand parts...
Ground-water resources of the lower Niobrara River and Ponca Creek basins, Nebraska and South Dakota
Thomas G. Newport, Robert A. Krieger
1959, Water Supply Paper 1460-G
This report describes the area in north-central Nebraska and south-central South Dakota drained by Ponca Creek and by the Niobrara River below Valentine, Nebr. The Niobrara River and Ponca Creek are neighboring eastward flowing tributaries of the Missouri River. The Dakota sandstone of Cretaceous age is the oldest formation tapped...
Impact mechanics at Meteor Crater, Arizona
Eugene Merle Shoemaker
1959, Open-File Report 59-108
Meteor Crator is a bowl-shaped depression encompassed by a rim composed chiefly of debris stacked in layers of different composition. Original bedrock stratigraphy is preserved, inverted, in the debris. The debris rests on older disturbed strata, which are turned up at moderate to steep angles in the wall of the...
Investigations of Sediment Transportation, Middle Loup River at Dunning, Nebraska: With Application of Data from Turbulence Flume
David Wellington Hubbell, Donald Quintin Matejka
1959, Water Supply Paper 1476
An investigation of fluvial sediments of the Middle Loup River at Dunning, Nebr., was begun in 1946 and expanded in 1949 to provide information on sediment transportation. Construction of an artificial turbulence flume at which the total sediment discharge of the Middle Loup River at Dunning, Nebr., could be measured...
Yellowstone Park area, Wyoming: A possible modern Lopolith
W. Hamilton
1959, GSA Bulletin (70) 225-228
No abstract available....
History of Imuruk Lake, Seward Peninsula, Alaska
David M. Hopkins
1959, GSA Bulletin (70) 1033-1046
A study of Imuruk Lake, a large, shallow lake in north-central Seward Peninsula, Alaska, illuminates the climatic history of northwestern Alaska and the tectonic history of central Seward Peninsula during Pleistocene and Recent time. Special interest attaches to the older lake sediments, because they contain evidence concerning the climate, fauna, and...
Ground-water provinces of India
George C. Taylor
1959, Economic Geology (54) 683-697
This paper gives a general resume of ground-water utilization and development and describes the occurrence of water in eight ground-water provinces of India. The paper is based in part on observations of the writer during 1951-55 and in part on earlier work of the Geological Survey of India. Ground water...
Tritium and deuterium content of atmospheric hydrogen
F. Begemann, Irving Friedman
1959, Zeitschrift fur Naturforschung A (14) 1024-1031
The tritium and deuterium content of 24 samples of atmospheric hydrogen collected at ground level near Buffalo. N.Y. (U.S.A.). Hamburg (Germany), and Nürnberg (Germany) during 1954 to 1956 was measured.At the beginning of 1954 the T/H-ratio was found to have been 9.18 · 10-14 i.e. about a factor of 10 higher...
Composition of monazites from pegmatites in eastern Minas Gerais, Brazil
K. J. Murata, C. V. Dutra, da Costa, J.J.R. Branco
1959, Geochimica et Cosmochimica Acta (16) 1-14
Two zoned pegmatites in south-eastern Minas Gerais were sampled in detail for their content of monazite and xenotime and the monazite was analysed for certain of the rare-earth elements and thorium.The ratio of xenotime to monazite increases in both pegmatites from the wall toward the quartz core. The content of...
Modern instruments for surveying and mapping
G.D. Whitmore, M.M. Thompson, J. L. Speert
1959, Science (130) 1059-1066
New surveying systems utilizing photogrammetry and electronics speed production of topographic maps....
Determination of uranium in zircon
F. Cuttitta, G. J. Daniels
1959, Analytica Chimica Acta (20) 430-434
A routine fluorimetric procedure is described for the determination of trace amounts of uranium in zircon. It employs the direct extraction of uranyl nitrate with ethyl acetate using phosphate as a retainer for zirconium. Submicrogram amounts or uranium are separated in the presence of 100,000 times the amount of zirconium....
