Time- And Strata-Bound Ore Deposits

ISBN-13: 9783642668081 / Angielski / Miękka / 2011 / 446 str.

D. D. Klemm; H. -J Schneider

Opis

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."

Spis treści

General Topics.- Factor of Time in Formation of Strata-Bound Ore Deposits..- Plate Tectonics and Mineralization in China..- Phase Boundaries as an Instrument for Metal Concentration in Geological Systems..- The Syngenetic-epigenetic Transition. An Australian Example..- Exploration Practice for Strata-Bound Volcanogenic Sulphide Deposits in the Spanish-Portuguese Pyrite Belt: Geology, Geophysics, and Geochemistry..- On the Formation of Lower Cretaceous Potassium Salts and Tachhydrite in the Sergipe Basin (Brazil) with Some Remarks on Similar Occurrences in West Africa (Gabon, Angola etc.)..- Precambrian Deposits.- Timing Aspects of the Manganese Deposits of the Northern Cape Province (South Africa)..- Time- and Strata-Bound Features of the Michigan Copper Deposits (USA)..- Strata-Bound Scheelite Deposits in the Precambrian Basement of San Luis (Argentina)..- Paleozoic Deposits.- Contribution to a New Genetical Concept on the Bolivian Tin Province..- Early Paleozoic Ore Deposits of the Sb-W-Hg Formation in the Eastern Alps and Their Genetic Interpretation..- Genesis of the King Island (Tasmania) Scheelite Mine..- Geological Investigations on the Genesis of the Cinnabar Deposit of Kalecik/Karaburun (Turkey)..- The Strata-Bound Lead-Zinc Deposits from Menderes Massif in Bay?nd?r (West-Anatolia)..- Hydrothermal-Sedimentary Iron Ores Related to Submarine Volcanic Rises: the Teliuc-Ghelar Type as a Carbonatic Equivalent of the Lahn-Dill Type..- The Strata-Bound Magnesite Deposit of Eugui-Asturreta in the Spanish Pyrenees..- Sedimentary Magnesite Fabrics Within the Sparry Magnesite Deposit Hochfilzen (Tyrol)..- Mesozoic Deposits.- Comparative Reflections on Four Alpine Pb-Zn Deposits.- Pb-Zn-Ores of the Westcarpathian Triassic and the Distribution of Their Sulphur Isotopes..- Strata-Bound Kies-Ore Deposits in Ophiolitic Rocks of the “Tauernfenster” (Eastern Alps, Austria/Italy)..- Ore/Mineral Deposits Related to the Mesozoic Ophiolites in Italy..- Strata-Bound Intrusive Deposits.- Genesis of Chromite in Yugoslavian Peridotite..- Oxygen Fugacity and Its Bearing on the Origin Chromitite Layers in the Bushveld Complex..- Geochemical and Minerogenetical Problems.- Einige überraschende Beobachtungen zum Problem der Entmischung der ”Titanomagnetite“.- Isotopic Composition of Sulphur and the Genesis of Hydrothermal Sulphates..- Carbon and Oxygen Isotope Studies in Rocks of the Vicinity of the Almadén Mercury Deposit (Province of Ciudad Real, Spain).- Origin of Amphibolite and Associated Magnetite Ore from the Pocheon Iron Mine (Korea)..- Geochemistry and Diagenesis of Recent Heavy Metal Ore Deposits at the Atlantis-II-Deep (Red Sea)..- Subject and Locality Index.