Proterozoic crustal evolution
著者
書誌事項
Proterozoic crustal evolution
(Developments in Precambrian geology, 10)
Elsevier, 1992
大学図書館所蔵 全22件
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  和歌山
  鳥取
  島根
  岡山
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  山口
  徳島
  香川
  愛媛
  高知
  福岡
  佐賀
  長崎
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注記
Includes bibliographical references and indexes
内容説明・目次
内容説明
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: comparison of Archean and Proterozoic supracrustal assemblages to more fully understand differences between Archean and post-Archean tectonic regimes; to more fully understand the geochemical differences between Archean and post-Archean sediments and to evaluate the various factors that control sediment composition; 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; to employ new techniques in the dating of individual zircons to more fully understand Proterozoic tectonic history and the role of crustal reworking; and, from trace element ratios and Nd isotopic data from basalts, to better understand Proterozoic mantle evolution.Other objectives were: to encourage more detailed studies of the anorogenic granite-anorthosite association to better understand its origin and significance in terms of crustal evolution; from combined Nd, Pb, and Sr isotopic data, to more precisely estimate the amount of new continental crust formed during the Proterozoic; to encourage joint P-T and geochronological studies of Proterozoic and high-grade terranes to better understand Proterozoic orogenesis; and, 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.
目次
- Volcanic rocks of early Proterozoic greenstone belts, T.E. Smith
- the Proterozoic ophiolite problem, H.H. Helmstaedt and D.J. Scott
- Proterozoic rifts, J.C. Green
- geochemistry and significance of mafic dyke swarms in the Proterozoic, J. Tarney
- tectonic setting of Proterozoic layered intrusions with special reference to the bushveld complex, G. von Gruenewaldt and R.E. Harmer
- Proterozoic anorthosite complexes, R.A. Wiebe
- the role of anorogenic granites in the Proterozoic crustal development of North America, J. Lawford Anderson and J. Morrison
- Proterozoic granulite terranes, S.L. Harley
- xenoliths in Proterozoic crust - evidence for reworking of the lower crust, J. ruiz
- Proterozoic iron formations, C. Klein and N.J. Beukes
- Proterozoic collisional and accretionary orogens, B.F. Windley
- Proterozoic terranes and continental accretion in southwestern North America, K.C. Condie
- isotopic studies of Protozoic crustal growth and evolution, P.J. Patchett.
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