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
Precambrian Research – Elsevier
Published: May 1, 2018
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