The Elements of economic geology

Bibliographic data

Monograph

Identifikator:: 1773832379

URN:: urn:nbn:de:zbw-retromon-172798

Document type:: Monograph

Author:: Gregory, John W. http://d-nb.info/gnd/11683014X

Title:: The Elements of economic geology

Place of publication:: London

Publisher:: Methuen

Year of publication:: 1928

Scope:: XIV, 312 S.; graph. Darst.

Digitisation:: 2021

Collection:: Economics Books

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PREFACE HE different sections of Economic Geology are intimately connected. Thus some ore deposits are dependent on deep-seated solutions and others On coastal action, the characteristics of soils illustrate tock decay and the circulation of underground water, tarthquakes connect superficial and plutonic action as they arise from faulting at the depth of hundreds of miles, and the problems of water supply show that the surface is nourished by new material from the interior. Hence it is convenient to consider together the various branches of civil and mining engineering and of agricul- tural geology. To cover so varied a field in a short book renders necessary omission of reference to some metals that throw no special light on general principles, and to Some agencies and processes that are adequately dealt with in geological text-books. The examples chosen illustrate various principles and processes, the selection being often determined by my having had the privilege of examining them personally. The literature of the Economic Geology is now so overwhelming, that reference to it has had to be sternly limited, or it would have taken an undue share of the Space; no reference has been given to much of the better- known literature, the references given being to those that would be useful to students, or to the authorities for evidence relied on in the conclusions adopted, I may refer here to a few convenient sources of infor. mation, such as the monographs on useful minerals and ores by the Imperial Institute, to the statistics in the annual volumes of Mineral Industry ; for the original literature on the ores of North America, which are often mentioned in the text, to W. Lindgren’s Mineral

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