Annual Report of the Director of the United States Geological Survey to the Secretary of the Interior, Volumes 36-38U.S. Government Printing Office, 1915 - Forest reserves |
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Page 16 - It should also be noted that the periods of aridity and of saline deposition in the southwestern part of this country were essentially contemporaneous with the periods of evaporation and precipitation in the Stassfurt district. Finally, crystals of potash salts were found in the waste from a bore hole near Boden, not far from Amarillo, Tex., by Dr. JA Udden, of the Bureau of Economic Geology and Technology of the University of Texas, and he also found traces of potash in muds or brines from several...
Page 25 - The gold and copper deposits of the Port Valdez district, by BL Johnson. In Bulletin 622, 1915, pp. 140-188.
Page 27 - Ordovician rocks of the Ozark uplift by circulating artesian alkaline-saline sulphureted waters, and his careful observations and cogent reasoning have gone far to establish the general conclusion that ordinary cold artesian water may under some circumstances be a very efficient agent in the solution, transportation, and deposition of the constituents of certain sulphide ores.
Page 25 - Dale. 1914. 67 pages, 2 plates, 11 text figures. A companion report to Bulletin 521, "The commercial marbles of western Vermont," by the same author. The region discussed in the earlier report includes the most extensive marble industry in the United States, whereas Bulletin 589 relates to a virgin field whose development is still a work of the future. The object of this bulletin is twofold — to locate definitely and describe accurately the marbles and dolomites of eastern Vermont with a view to...
Page 26 - ... text figures. Discusses briefly the geology of the Santa Rosa Range, a narrow desert mountain range of northwestern Nevada, in general, and of the National mining district, on the western slope of this range, in particular. Gives detailed descriptions of developments in the district. Special interest attaches to the description of the extraordinary shoot of rich gold ore which brought the district into prominence in 1909 and to the conclusion that the high-grade ores of National, like those of...
Page 20 - ... adopting commercial business methods in handling orders for the maps when once a demand is created must not be overlooked. In informing the public of the existence of authoritative maps published by the Federal Government a special effort is now made to reach the communities in each area covered...
Page 27 - Pack. 1915. 219 pages, 14 plates, 5 text figures. erence to the geologic features which have a bearing on the presence or absence of petroleum In the several areas considered. The writers take this opportunity of presenting also some additional geologic Information, which may be of interest to the geologist if not to the oil prospector. The Illustrations show many interesting geologic features and include a geologic map, with sections, of the valley between the Coalinga oil field and Livermore Pass....
Page 33 - Sevier counties, Utah, by CT Lupton. 1915. 88 pages, 12 plates, 1 text figure. Describes briefly the geography and geology of Castle Valley, in eastcentral Utah, studied in connection -with an Investigation made to determine the quality and quantity of the coal resources of the valley. The age and thickness of the coal-bearing formations and their relations to the underlying and overlying rocks are discussed, as well as the character of the coal and the development of the valley with respect to mines,...
Page 19 - ... importance to warrant a more extended description; (2) preliminary reports on economic investigations, the results of which are to be published later in more detailed form. These papers are such only as have a direct economic bearing, all topics of purely scientific interest being excluded. They have been grouped according to subjects or general regions and.
Page 29 - ... describes In clear, simple language the geography, geology, history, and natural resources of the region visible from the car windows. Geology Is made Interesting to the reader by an avoidance of details and by the selection for treatment of the features that are likely to attract the eye. Care is taken also to point out the connection between the story of the earth and the present human activity in the region. The book is divided into two parts, one dealing with the route from Seattle to San...