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Time- and Strata-Bound Ore Deposits (Paperback, Softcover reprint of the original 1st ed. 1977)
Loot Price: R3,092
Discovery Miles 30 920
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Time- and Strata-Bound Ore Deposits (Paperback, Softcover reprint of the original 1st ed. 1977)
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The problem of time-and strata-bound formation of ore deposits has
during the past decade become one of the most debated topics in cur
rent international discussion. Due to the amazing results of modern
mineral exploration and world-wide geophysical research, the mutual
relationship between the complex geological history pf a crustal
seg ment and the development of distinct metallogenic provinces
(ore belts) has received much interest. Reviewing the earth's
history in this light one can now recognize metallogenic epochs
even of global range which document the existence of world-wide
time-bound ore enrich ments. The knowledge of these metallogenetic
processes has been growing step by step for several decades. It
began with simple observations and sceptic interpretations, which
at first threw heretical spot lights on to the edifices of the
prevailing theories on granitic differentiation as the favoured
source of ore deposits. It was obvious that the new ideas at first
referred to ore enrichments in sedimentary sequences, nowadays
summarized under the term strata-bound, and mainly interpreted as
stratiform or sedimentary ore deposits. Moreover, the modern term
"strata-bound" also includes ore mineralizations which are bound to
distinct units of layered (intrusive or extrusive) igneous
complexes as a general descriptive term without genetical
restriction Albert Maucher is one of the representatives of the
initial era who discussed these genetical questions critically in
the decade before the 2nd World War."
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