Developments in Precambrian Geology, Volume 10: Proterozoic Crustal Evolution Kent C. Condie

ISBN: 9780080869094

Published: February 3rd 1993

ebook

553 pages


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Developments in Precambrian Geology, Volume 10: Proterozoic Crustal Evolution  by  Kent C. Condie

Developments in Precambrian Geology, Volume 10: Proterozoic Crustal Evolution by Kent C. Condie
February 3rd 1993 | ebook | PDF, EPUB, FB2, DjVu, AUDIO, mp3, RTF | 553 pages | ISBN: 9780080869094 | 5.76 Mb

As a final product of the International Geological Correlation Program (IGCP) Project 217, this volume brings together significant advances in the understanding of Proterozoic crustal evolution. This IGCP Project focussed on nine research objectives:MoreAs a final product of the International Geological Correlation Program (IGCP) Project 217, this volume brings together significant advances in the understanding of Proterozoic crustal evolution. This IGCP Project focussed on nine research objectives: 1) Comparison of Archean and Proterozoic supracrustal assemblages to more fully understand differences between Archean and post-Archean tectonic regimes- 2) To more fully understand the geochemical differences between Archean and post-Archean sediments and to evaluate the various factors that control sediment composition- 3) From combined U/Pb zircon and whole-rock Sm/Nd studies, to see if the apparent 2.4-2.0 continental crust generation gap is real- 4) To employ new techniques in the dating of individual zircons to more fully understand Proterozoic tectonic history and the role of crustal reworking- 5) From trace element ratios and Nd isotopic data from basalts, to better understand Proterozoic mantle evolution- 6) To encourage more detailed studies of the anorogenic granite-anorthosite association to better understand its origin and significance in terms of crustal evolution- 7) From combined Nd, Pb, and Sr isotopic data, to more precisely estimate the amount of new continental crust formed during the Proterozoic- 8) To encourage joint P-T and geochronological studies of Proterozoic and high-grade terranes to better understand Proterozoic orogenesis: and 9) To try and understand why hydrothermal precious metal deposits are relatively rare in the Proterozoic compared to both the Archean and the Phanerozoic.

The book should be of interest to professionals in the geosciences (especially geochemists, petrologists and structural geologists) and graduate students in the same fields.



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