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Page 7259, results 181451 - 181475

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The bleaching clays
P. G. Nutting
1933, Circular 3
Groundwater is one of Utah 's most extensive and valuable natural resources. Because of its widespread occurrence in both wet and dry areas, groundwater has been, and is a major factor affecting economic growth and development of the State. In some areas, groundwater is used to supplement streamflow for irrigation,...
Some of Alpheus Hyatt's unfigured types from the Jurassic of California
C.H. Crickmay
1933, Professional Paper 175-B
Alpheus Hyatt named a considerable number of Jurassic fossils from California. Only a few of these were described, arid none were illustrated. In this paper 16 of these species are evaluated in terms of present-day nomenclature, figures of the type specimens are shown, and their probable age significance is given....
Fifty-fourth annual report of the Director of the Geological Survey
Walter Curran Mendenhall
1933, Annual Report 54
The appropriations made directly for the work of the Geological Survey for the fiscal year 1933 included 12 items, amounting, to $2,181,000. Of the balance remaining in the 1932 appropriation for topographic surveys, $150,000 was continued available for expenditure during the fiscal year 1933, and the sum of $284,400 was transferred to the Geological...
Classification and nomenclature of rock units
G. H. Ashley, M.G. Cheney, J.J. Galloway, C.N. Gould, C.J. Hares, B.F. Howell, A.I. Levorsen, H. D. Miser, R.C. Moore, J.B. Reeside Jr., W.W. Rubey, T. W. Stanton, G. W. Stose, W.H. Twenhofel
1933, Economic Geology (44) 423-459
No abstract available. ...
A new lepidolite deposit in Colorado
E.B. Eckel
1933, Journal of the American Ceramic Society (16) 239-245
A newly discovered pegmatite deposit near Ohio City, Colorado, is chiefly lepidolite, massive topaz, beryl, and albite, with some samarskite and columbitc. Three parallel pegmatite dikes, cach about 11 fect thick and 300 feet long, cut black schist. The minerals arc banded parallel to walls, with the following succession from walls to center; fine‐grained albite...
Specific yield determined from a Thiem's Pumping‐Test
L.K. Wenzel
1933, Eos, Transactions, American Geophysical Union (14) 475-477
The specific yield of a water-bearing formation is defined as the ratio of (1) the volume of water, which after being saturated, it will yield by gravity to (2) its own volume (O. E. Meinzer, Outline of ground-water hydrology, U.S. Geol. Sur. Water-Supply Paper 494, p. 28, 1923). It is...
Further remarks on the Cripple Creek Volcano, Colorado
G. F. Loughlin
1933, Eos, Transactions, American Geophysical Union (14) 243-243
Structural evidence, particularly in the deeper mine‐workings, indicates that the volcano, which is of Tertiary age, was developed by explosive eruptions at a number of points along intersecting fissure‐systems that had been formed in pre‐Cambrian granite by east‐west compression, probably during the Laramide revolution. The volcanic breccia, which consists principally of...
Volcanic history of the Magdalena District, New Mexico
A. H. Koschmann
1933, Eos, Transactions, American Geophysical Union (14) 250-250
The Magdalena District in central New Mexico comprises the Magdalena Range and Granite Mountain which are block mountains of the Basin Range type. They consist of Carboniferous sedimentary formations on a pre-Cambrian basement and are covered by Tertiary volcanic rocks.Volcanism in the District was preceded by considerable faulting, tilting, and...
Geophysical interpretation of ground‐water levels
O. E. Meinzer
1933, Eos, Transactions, American Geophysical Union (14) 36-37
The theory of rock‐pressure as a cause of artesian‐head dates back at least to early Grecian times. Thus the philosopher Thales, about 600 B.C., taught that the springs derive their water from the ocean through subterranean channels and that the water is lifted to the springs by rook‐pressure. The theory of rock‐pressure has had...
Some relations between ground‐water hydrology and oceanography
David G. Thompson
1933, Eos, Transactions, American Geophysical Union (14) 30-33
In many areas along the sea-coasts of the world the water-supply for human use is derived largely, and in some areas wholly, from underground sources. Because of the proximity to the ocean in these areas, in some respects the geologic and hydrologic conditions that govern the occurrence and movement of...
Deep‐well salinity‐exploration
A.G. Fiedler
1933, Eos, Transactions, American Geophysical Union (14) 478-480
One of the outstanding accomplishments of recent years in connection with the study of the geologic source of groundwater and the quality of water yielded by different formations has been the development of methods and equipment for the exploration of wells. The description and use of the deep‐well current‐meter on well‐exploration work in Hawaii and New...