Introduction: Some problems relating to fluctuations of ground‐water level
D. G. Thompson
1936, Eos, Transactions, American Geophysical Union (17) 337-341
When the program for the meeting of the Section of Hydrology a year ago was in preparation, it was suggested that a symposium be presented on the subject of the effects of the recent drought on ground‐water levels. The proposal was not carried out largely because at that time not...
Mode of intrusion of pre‐Cambrian granites in Central Boulder County, Colorado
Edwin N. Goddard
1936, Eos, Transactions, American Geophysical Union (17) 257-257
No abstract available....
Suspended matter in several small streams
Samuel K. Love
1936, Eos, Transactions, American Geophysical Union (17) 447-452
The measurement of the loads of suspended matter carried past 34 gaging‐stations located on streams in eight regional projects of the Soil Conservation Service has required greater precision in the measurement of discharge and a more intensive program for the collection of samples of suspended matter than has been found...
A source of heat‐energy in crystallization of granodiorite magma, and some related problems of volcanism
W. S. Burbank
1936, Eos, Transactions, American Geophysical Union (17) 236-255
Evidence obtained from thin sections, polished sections, and chemical analyses of granodiorite porphyries from the Ouray District of Colorado show that during crystallization of the granodiorite magma a number of shifts occurred in the equilibrium between the oxides of iron. These changes are reflected in processes of mineralization associated with...
Fluctuations of ground‐water levels in Utah
G.H. Taylor
1936, Eos, Transactions, American Geophysical Union (17) 378-382
Long‐time continuous records of the fluctuations of ground‐water levels have been obtained at relatively few locations in the United States. Among the few available records for Utah that extend continuously over a period of a year or more are those made in the Jordan River and Ogden valleys by the...
Movement of ground‐water
O. E. Meinzer
1936, Eos, Transactions, American Geophysical Union (17) 478-479
The movement of water through formations having capillary openings is generally laminar and obeys Darcy's law, at least down to very low gradients. About 1000 samples tested in the laboratory of the United States Geological Survey have coefficients of permeability ranging from 0.001 to 90,000, indicating probable velocities ranging from...
Review of the work of W. J. McGee on ground‐water levels
O. E. Meinzer
1936, Eos, Earth and Space Science News (17) 386-390
W J McGee was a scientist of broad‐interests, large vision, and unbounded enthusiasm for science and its application to human welfare. He was one of the earliest champions of the conservation of our natural resources. He rose from humble origin, by rigorous self‐discipline, to outstanding national leadership. He was absorbed...
Long‐time records of ground‐water levels on Long Island, New York
R.M. Leggette
1936, Eos, Transactions, American Geophysical Union (17) 341-344
As early at 1851 the need for information as to the position of the water‐table was recognized by workers on Long Island. In that year water‐level measurements were made in about 32 domestic wells in the southern part of Kings and Queens counties, New York (W. J. McAlpine, Report made...
Report of the committee on chemistry of natural waters, 1935–36
C. S. Howard
1936, Eos, Transactions, American Geophysical Union (17) 335-336
The membership of this Committee was not changed during the past year.A publication has appeared during the year giving the analytical data assembled for and used as a basis for Bulletin 40 of the Department of Public Works, California. This new publication, printed as 40‐A, is entitled “Detailed analyses showing...
Report of Committee on Glaciers, 1935–36
Francois E. Matthes
1936, Eos, Transactions, American Geophysical Union (17) 286-294
The membership of the Committee remains the same as stated in the Transactions of the 15th Annual Meeting, except that Kenneth N. Phillips has taken the place of Carl P. Richards, as representative of the Mazamas, of Portland, Oregon.The Committee submits the following report on the variations of glaciers in the continental...
Report of the Committee on Underground Waters, 1935–36
David G. Thompson
1936, Eos, Transactions, American Geophysical Union (17) 326-329
Interest in problems of ground‐water hydrology continues unabated. As proof of this statement it is only necessary to state that of 57 papers listed for presentation at the present annual meeting of the Section of Hydrology and of the Pacific Coast meeting of the Section on January 31 and February...
The relation of the drought of 1934 to ground‐water supplies in the James and Sheyenne River‐Basins of North And South Dakota
A.N. Sayre
1936, Eos, Transactions, American Geophysical Union (17) 366-370
The water‐shortage caused by the drought of 1934 in the Middle West drew nation‐wide attention to the lack of adequate information on the relation of precipitation to water‐supplies. The shortage was especially severe in the Dakotas because precipitation had been below normal in North Dakota since 1930 and in South...
Volcanological boron compounds
1936, Eos, Transactions, American Geophysical Union (17) 234-235
I wish to present what evidence we have as to the geochemistry of boron minerals as related to volcanological processes, or, in other words, what are the volcanological boron compounds?Volcanological processes, considered only as they apply to this question, may be grouped for present convenience as follows: (1) Extrusion of...
Decline of artesian head in west‐central South Dakota
Thomas William Robinson
1936, Eos, Transactions, American Geophysical Union (17) 363-366
During the summer of 1935 the United States Geological Survey, in cooperation with the South Dakota Geological Survey, made a field‐study and report of the artesian conditions in the west‐central part of South Dakota. This study covered the semiarid plains‐region between the Black Hills uplift and the Missouri River, in...
United States Geological Survey records of suspended and dissolved matter in surface‐waters
N.C. Grover
1936, Eos, Transactions, American Geophysical Union (17) 444-446
Although the widest‐known and most conspicuous task of the United States Geological Survey with reference to surface‐waters has been the measurement of discharge, attention has always been given to the suspended and dissolved matter carried in them. From 1902 to 1909 the Survey published about 20 reports on the quality...
Suspended matter in the Colorado River, 1925–1935
C. S. Howard
1936, Eos, Transactions, American Geophysical Union (17) 446-447
The rugged topography of a great part of the Colorado River Basin is a significant factor in determining the quantity of water and suspended matter carried by the River. The mountainous regions of Colorado and Wyoming contribute a large part of the flow of the River, whereas the central part...
An interpretation of water‐table fluctuations at four wells in Southern California
Fred Charles Ebert
1936, Eos, Transactions, American Geophysical Union (17) 371-378
The urban and agricultural development in most areas of southern California have depended on the underground water‐resources of which more and more use has been made. It has been estimated that in the South Coastal Basin during the summer 90 per cent of the water‐supply for irrigation and other purposes...
Extension of normals by precipitation‐data and by comparison with another stream
G. L. Parker
1936, Eos, Transactions, American Geophysical Union (17) 542-543
The factors affecting relationship between precipitation and consequent runoff are multitudinous and their interrelation is exceedingly complex. They vary widely from time to time and place to place. Basic data are meager and the weight to be given to any single factor is usually uncertain. Runoff‐characteristics of drainage‐areas within the...
The recovery of ground‐water levels in Nebraska in 1935
Leland K. Wenzel
1936, Eos, Transactions, American Geophysical Union (17) 370-371
A program of water‐level measurements in about 350 wells scattered throughout Nebraska was begun in 1934 by the United States Geological Survey in cooperation with the Conservation and Survey Division of the University of Nebraska (see L. K. Wenzel, A state‐wide program of periodic measurements of ground‐water level in Nebraska,...
Dissolved mineral matter in surface‐waters
W. D. Collins
1936, Eos, Transactions, American Geophysical Union (17) 252-253
The only unpublished comprehensive Geological Survey records of dissolved matter in surface‐waters are the results obtained in the study of the Colorado River and its tributaries since 1930. The records are mainly analyses of 10‐day composites of daily samples, although there are several analyses of spot‐samples from some streams in...
Hydrothermal leaching in the Virginia mining district, New Mexico
Samuel Grossman Lasky
1936, Economic Geology (31) 156-169
The tourmaline-copper deposits of the Virginia mining district, New Mexico, lie along veins that were plugged and reopened repeatedly during the process of mineral deposition. At some time between the second and third stages of deposition the solutions removed calcite, sericite, and chlorite from interstitial and included fragments of altered...
Cinnabar deposits in southwestern Arkansas
John Calvin Reed
1936, Economic Geology (31) 314-317
No abstract available. ...
Nodular, orbicular, and banded chromite in northern California
W. D. Johnston Jr.
1936, Economic Geology (31) 417-427
IN I930 Mr. A. F. Duggleby gave me a specimen of orbicular chromite from the Octopus claim, in Siskiyou County, Calif., showing two generations of chromite, one older than the associated olivine and one younger. In November, I93I, I examined briefly a number of deposits in northern California, in search...
Suggestions on trapping coyotes and wolves in Alaska
Harlan H. Gubser
1936, Wildlife Leaflet 62
No abstract available....
Copper deposits of the southern Appalachian region; discussion
Clarence Samuel Ross
1936, Economic Geology (31) 428-432
No abstract available....
