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Author : I. M. Varentsov,Gyula Grasselly
Publisher : E. Schweizerbartsche Verlagsbuchhandlung
Page : 368 pages
File Size : 46,7 Mb
Release : 1980
Category : Geochemie
ISBN : UCAL:B4452149
Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 52,6 Mb
Release : 1976
Category : Electronic
ISBN : OCLC:163432690
Author : I.M. Varentsov,Gy Grasselly
Publisher : Unknown
Page : 513 pages
File Size : 55,6 Mb
Release : 1980
Category : Electronic
ISBN : 3510650980
Author : G.N. Baturin
Publisher : Springer Science & Business Media
Page : 349 pages
File Size : 55,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400937314
Manganese nodules were first discovered on the ocean floor 160 miles south-west of the Canary Islands on February 18, 1803, during the first complex oceano logical cruise of the Challenger. They surprised researchers by their unusual shape and also by their unusual chemical composition; nevertheless for many years after wards, they were considered merely as one of Nature's exotic marine tricks. After the Secpnd World War, a comprehensive investigation of the World Ocean started, and new data were obtained on a wide distribution of manganese nodules and their polymetallic composition, that made scientists consider nodules as one of the major characteristics of the deep oceanic zone. Recently, meaning since the 1960's, nodules have been recognized as a potential ore source, investigation of which is stimulated by the progressive depletion of land-based mineral resources. Several generations of scientists from various countries have contributed to the problem of exploration of manganese nodules on the ocean floor. Though the problem has been posed, it has not been solved yet because it required, in its turn, a scrutiny of some fundamental aspects such as composition, nature, accretion r'ate of nodules and retrieval of nodule fields. These problems have been discussed in thousands of papers and larger publications; see, in particulare, Mero, 1965; Horn, 1972; Morgenstein, 1973; Bezrukov, 1976; Glasby, 1977; Bischoff and Piper, 1979; Lalou, 1979; Manganese nodules, 1979; Varentsov, 1980; Cronan, 1980; Manganese nodules . . . , 1984, 1986.
Author : Igor' Michajlovič Varencov,Gyula Grasselly
Publisher : Unknown
Page : 357 pages
File Size : 40,9 Mb
Release : 1980
Category : Electronic
ISBN : 9630516683
Author : I.M. Varentsov
Publisher : Springer Science & Business Media
Page : 355 pages
File Size : 41,6 Mb
Release : 2013-03-09
Category : Science
ISBN : 9789401721745
The major part of the world's high grade industrial manganese ore is being mined in supergene deposits. This book represents the first attempt to bring together not only academic but also commercial data on all aspects of the geochemistry of formation of supergene manganese ores. It is a distinctive account of the geology, geochemistry, mineralogy, experimental modelling studies, mechanisms of formation processes and geochemical evolution through geological time of manganese ores for all types of supergene deposits. Special emphasis is placed on the general geochemical model of supergene manganese ore formation, which can be applied in geochemical exploration. Despite the fact that supergene manganese ores have been used by mankind since the early centuries, it is only during the last decade that a comprehensive understanding of the nature of geochemical processes of formation of these deposits has become available and their potential as an economic resource has been recognized against other genetical types of manganese accumulations. Audience: This substantial and comprehensive volume is of interest to economic geologists, mining engineers, geochemists, mineralogists and other specialized geoscientists.
Author : Jin Yu Gan,David L. Dineley
Publisher : VSP
Page : 210 pages
File Size : 41,7 Mb
Release : 1997-08
Category : Science
ISBN : 9067642576
This book is a collection of papers presented in the symposia, held in Beijing, on palaeontology and historical geology. The papers deal with different topics, providing information on Palaeobiogeography and Palaeoecology of Asian countries, their faunal content, and fossil preservation.
Author : Pei Rongfu
Publisher : VSP
Page : 528 pages
File Size : 51,5 Mb
Release : 1997
Category : Science
ISBN : 9067642649
Author : Anonim
Publisher : Unknown
Page : 888 pages
File Size : 54,9 Mb
Release : 1991
Category : Limnology
ISBN : UOM:39015027733297
Author : J. M. Botbol
Publisher : DIANE Publishing
Page : 60 pages
File Size : 50,9 Mb
Release : 1993-05
Category : Science
ISBN : 156806358X
Author : Anonim
Publisher : Unknown
Page : 352 pages
File Size : 53,6 Mb
Release : 1983
Category : Geology
ISBN : WISC:89054716980
Author : International Geological Correlation Programme
Publisher : Unknown
Page : 172 pages
File Size : 41,8 Mb
Release : 1983
Category : Geology
ISBN : PSU:000061128187
Author : Supriya Roy
Publisher : Unknown
Page : 476 pages
File Size : 52,7 Mb
Release : 1981
Category : Nature
ISBN : UCAL:B4513444
Author : Geological Survey (U.S.)
Publisher : Unknown
Page : 746 pages
File Size : 54,8 Mb
Release : 1991
Category : Geology
ISBN : UOM:39015023891792
Author : International Geological Correlation Programme
Publisher : Unknown
Page : 178 pages
File Size : 40,8 Mb
Release : 1983
Category : Geology
ISBN : STANFORD:36105017490660
