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Geology and ore deposits of the Breckenridge mining district, Colorado
No abstract available.
Authors
T. S. Lovering
Geology and ore deposits of the Casto quadrangle, Idaho
The study of the Casto quadrangle was undertaken as the first item in a project to obtain more thorough knowledge of the general geology of southcentral Idaho on which to base study of the ore deposits of t he region. The quadrangle conta ins fragmentary exposures of Algonkian and Paleozoic sedimentary rocks, extensive deposits of old volcanic strata, presumably Permian, not heretofore recognized
Authors
Clyde P. Ross
Geology and ore deposits of the Elk City, Orogrande, Buffalo Hump, and Tenmile Districts, Idaho County, Idaho
This report presents the preliminary results of the authors' field work in 1931 and 1932 in the drainage basin of the South Fork of Clearwater River and just south of the divide between that stream and Salmon River.
Authors
P. J. Shenon, J. C. Reed
Geology of the North and South McCallum anticlines, Jackson County, Colorado, with special reference to petroleum and carbon dioxide
The McCallum anticlines, embracing an area about 2 miles wide and 12 miles long, are about 6 miles east of the town of Walden, Jackson County, Colo., on the east side of the Continental Divide. A cover of flat-lying Quaternary gravel obscures the outcrop of Pierre shale at many points on the two anticlines. Wells start in the upper part of the Pierre and penetrate all of the underlying Upper Creta
Authors
John Charles Miller
Gold-quartz veins south of Libby, Montana
The area described in this paper is one of rugged mountains, composed chiefly of folded and faulted sedimentary rocks of the Belt series. In the nearby region the beds are intruded by diorite sills and granitic stocks. Glacial drift, including silt deposited in a lake, covers much of the lower slopes of the mountains and partly fills the valleys. Incomplete records show a production of $200,000 in
Authors
Russell Gibson
Ground-water supplies and irrigation in San Pedro Valley, Arizona
The San Pedro Valley in southeastern Arizona extends from the International Boundary northward about 120 miles to the junction of the San Pedro River with the Gila River. The river basin also extends about 75 miles into Mexico. The valley varies in width from 5 to 20 miles, being widest in its middle portion, in the vicinity of Benson. The area of the portion of the basin within the United Stat
Authors
Kirk Bryan, G. E. P. Smith, Gerald A. Waring
Growth of the whitefish, Coregonus clupeaformis(Mitchill), in Trout Lake, northeastern highlands, Wisconsin
No abstract available.
Authors
Ralph Hile, Hilary J. Deason
Mineral and fuel resources, report on progress of investigations in 1933. Mineral industry of Alaska in 1933
No abstract available.
Authors
Philip Sidney Smith
Mineral deposits of the Rampart and Hot Springs districts. Placer concentrates of the Rampart and Hot Springs districts
No abstract available.
Authors
John Beaver Mertie, Arnold Elzey Waters
Mineral resources of Alaska : report on progress of investigation in 1931
No abstract available.
Authors
Philip Sidney Smith
Mineral resources of Alaska, report on progress of investigations in 1931. Reconnaissance of the northern Koyukuk Valley, Alaska
No abstract available.
Authors
Robert Marshall