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The Gold Placers of the Fortymile, Birch Creek, and Fairbanks Regions, Alaska
No abstract available.
Authors
Louis Marcus Prindle
The hydrology of San Bernardino Valley, California
The San Bernardino basin lies near the eastern end of the valley of southern California. Under the latter term is included that general lowland area which is definitely limited on the north by the San Gabriel and San Bernardino ranges and on the east by the latter range and the San Jacinto group, but whose southern boundary is irregular and difficult to define. In this direction there is an inte
Authors
Walter C. Mendenhall
The lead, zinc, and fluorspar deposits of western Kentucky
Geography and distinctive characters. The fluorspar, lead, and zinc deposits that were the subject of the investigations reported in this paper are situated hi Livings ton, Crittenden, and Caldwell, and adjacent portions of Christian, Trigg, and Lyon counties, in western Kentucky, and in the counties immediately across the Ohio River, in the extreme southern portion of Illinois. This area, constit
Authors
E. O. Ulrich, W.S.T. Smith
The lignite of North Dakota and its relation to irrigation
No abstract available.
Authors
Frank Alonzo Wilder
The normal distribution of chlorine in the natural waters of New York and New England
No abstract available.
Authors
Daniel Dana Jackson
The origin of certain place names in the United States (second edition)
No abstract available.
Authors
Henry Gannett
The petroleum fields of the Pacific coast of Alaska, with an account of the Bering River coal deposits
This report contains the result of a hasty examination of the structural and economic geology of the localities where indications of petroleum have been found. Though only a few wells have been drilled and it is too soon to predict an important future for the region as a petroleum producer, studies have shown that there is ample justification for further prospecting and that the region may yet be
Authors
George Curtis Martin
The southern Appalachian forests
In examining so large an area it was found that the best results could be obtained by traversing the roads and trails and making side trips wherever necessary to cover intermediate territory. Upon the topographic maps of the Geological Survey were drawn the outlines of cleared land and the several classes of forest land as they were passed. At the same time ocular estimates of the average stand an
Authors
H.B. Ayres, W.W. Ashe
The Triassic cephalopod genera of America
The marine Triassic section of .America is unusually complete, and its thickness compares favorably with that of any other region. All three subdivisions-Lower, Middle, and Upper Triassic--are represented by calcareous deposits, aggregating approximately 4,000 feet in thickness. Of this amount, about 800 feet belong to the Lower Triassic, about 1,000 feet to the Middle Triassic, and about 2,000 fe
Authors
Alpheus Hyatt, J.P. Smith