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Formation and evolution of Precambrian granulite terranes: A gravitational redistribution model

Author(s)
Leonid L. Perchuk
Leonid L. Perchuk
Department of Petrology, Geological Faculty, Moscow State University, Vorobievy Gory, Moscow, 119899, Russia; Institute of Experimental Mineralogy, Russian Academy of Sciences, Chernogolovka, Moscow District, 142432, Russia; and Department of Geology, Rand Afrikaans University, Auckland Park, South Africa
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Taras V. Gerya
Taras V. Gerya
Department of Earth Sciences, Swiss Federal Institute of Technology (ETH-Zurich), CH-8092 Zurich, Switzerland, and Adjunct Professor of Geological Faculty, Moscow State University, Vorobievy Gory, Moscow, 119899, Russia
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Doi:
https://doi.org/10.1130/2011.1207(15)
  • Published:
    February 01, 2011

This paper proposes a revision of the gravitational redistribution model suggested by Leonid Perchuk for the formation, evolution, and exhumation of Precambrian high-grade terranes (HGTs) located between granite-greenstone cratons. Such HGTs are separated from greenstone belts by crustal-scale shear zones up to 10 km wide and several hundred kilometers long. Pelite samples far (>~50 km) from the bounding shear zones show coronitic and symplectitic textures that reflect a decompression-cooling (DC) pressure-temperature (P-T) path. On the other hand, samples from within ~50 km of the bounding shear zones are characterized by textures that reflect an isobaric or near-isobaric cooling (IC) path....

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Origin and Evolution of Precambrian High-Grade Gneiss Terranes, with Special Emphasis on the Limpopo Complex of Southern Africa
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Origin and Evolution of Precambrian High-Grade Gneiss Terranes, with Special Emphasis on the Limpopo Complex of Southern Africa

Author(s)
Dirk D. van Reenen
Dirk D. van Reenen
Department of Geology, University of Johannesburg, Auckland Park, South Africa
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Jan D. Kramers
Jan D. Kramers
Department of Geology, University of Johannesburg, and School of Geosciences, University of the Witwatersrand, Johannesburg, South Africa
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Stephen McCourt
Stephen McCourt
School of Geological Sciences, University of KwaZulu Natal, Durban, South Africa
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Leonid L. Perchuk
Leonid L. Perchuk
Department of Petrology, Moscow State University, and the Institute of Experimental Mineralogy, Russian Academy of Sciences, Chernogolovka, Moscow District, Russia
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Geological Society of America
Volume
207
DOI:
https://doi.org/10.1130/MEM207
Copyright:
© 2011 Geological Society of America
Attribution: You must attribute the work in the manner specified by the author or licensor (but no in any way that suggests that they endorse you or your use of the work). Noncommercial - you may not use this work for commercial purpose. No Derivative works - You may not alter, transform, or build upon this work. Sharing - Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in other subsequent works and to make unlimited photocopies of items in this journal for noncommercial use in classrooms to further education and science.
ISBN print:
9780813712079
Publication date:
February 01, 2011

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