EVOLUTION ORE-BEARING PRECAMBRIAN STR

This book evolved from two projects of the International Geological Correlation Programme: N 91 "Metallogeny of the Precambrian" (1974-1985) and N 247 "Precambrian ore deposits related to tectonic styles" (1986-1991). To avoid some premature generalisations and to provide readers with factual data for their own conclusions the author focuses on comprehensive descriptions of the best studied regional and local ore-bearing structures. Representative examples are found both in classical Precambrian provinces of Australia, Canada, India, Africa, and in the Aldan, Anabar, Baltic, Sino-Korean and Ukrainian shields thoroughly studied in recent years. Ore-bearing structures are classified and related to the consecutive consolidation of ancient continental crust and its destruction by superposed tectonic and magmatic processes. Particular attention is given to the marginal structures in the context of plate tectonics and to the striking results of superdeep continental drilling. Researchers, students and exploration experts may find this volume useful in theoretical and practical aspects.