Anorthosites from an Archean continental arc in the Dharwar Craton, southern India: Implications for terrane assembly and cratonization

Anorthosites from an Archean continental arc in the Dharwar Craton, southern India: Implications... Precambrian Research 308 (2018) 126–147 Contents lists available at ScienceDirect Precambrian Research journal homepage: www.elsevier.com/locate/precamres Anorthosites from an Archean continental arc in the Dharwar Craton, southern India: Implications for terrane assembly and cratonization a,b,c,d, a M. Santosh , Shan-Shan Li School of Earth Sciences and Resources, China University of Geosciences Beijing, 29 Xueyuan Road, Beijing 100083, China Centre for Tectonics, Exploration and Research, University of Adelaide, Adelaide SA 5005, Australia Department of Geology, Northwest University, Xi’an 710069, China Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education; College of Marine Geosciences, Ocean University of China, Qingdao 266100, China ARTICLE I NFO ABSTRACT Keywords: Anorthositic rocks have attracted attention in terms of their possible role as the primordial crust of our planet, Gabbro-anorthosite suite and also as markers of Archean-Paleoproterozoic plate tectonic regimes. Here we investigate the Konkanhundi Geochemistry gabbro-anorthosite suite from Peninsular India, adjacent to the major collisional suture between the Western and Zircon U-Pb geochronology and Lu-Hf isotopes Eastern Dharwar cratonic blocks. The anorthosites display high Al O contents with negative correlation against 2 3 Archean plate tectonics MgO, high CaO and Sr contents, and positive Eu anomalies indicating plagioclase flotation in the magma Dharwar Craton http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Precambrian Research Elsevier

Anorthosites from an Archean continental arc in the Dharwar Craton, southern India: Implications for terrane assembly and cratonization

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier B.V.
ISSN
0301-9268
eISSN
1872-7433
D.O.I.
10.1016/j.precamres.2018.02.011
Publisher site
See Article on Publisher Site

Abstract

Precambrian Research 308 (2018) 126–147 Contents lists available at ScienceDirect Precambrian Research journal homepage: www.elsevier.com/locate/precamres Anorthosites from an Archean continental arc in the Dharwar Craton, southern India: Implications for terrane assembly and cratonization a,b,c,d, a M. Santosh , Shan-Shan Li School of Earth Sciences and Resources, China University of Geosciences Beijing, 29 Xueyuan Road, Beijing 100083, China Centre for Tectonics, Exploration and Research, University of Adelaide, Adelaide SA 5005, Australia Department of Geology, Northwest University, Xi’an 710069, China Key Laboratory of Submarine Geosciences and Prospecting Techniques, Ministry of Education; College of Marine Geosciences, Ocean University of China, Qingdao 266100, China ARTICLE I NFO ABSTRACT Keywords: Anorthositic rocks have attracted attention in terms of their possible role as the primordial crust of our planet, Gabbro-anorthosite suite and also as markers of Archean-Paleoproterozoic plate tectonic regimes. Here we investigate the Konkanhundi Geochemistry gabbro-anorthosite suite from Peninsular India, adjacent to the major collisional suture between the Western and Zircon U-Pb geochronology and Lu-Hf isotopes Eastern Dharwar cratonic blocks. The anorthosites display high Al O contents with negative correlation against 2 3 Archean plate tectonics MgO, high CaO and Sr contents, and positive Eu anomalies indicating plagioclase flotation in the magma Dharwar Craton

Journal

Precambrian ResearchElsevier

Published: May 1, 2018

References

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