The Mozambique Ocean Suture in Southern India: Age and Significance of Granulites in the Palghat-Cauvery Shear Zone System

Alan S. Collins; M. Santosh; Louise Kropinski; Martin P. Hand; Clark Chris; K. Saieev; Stacey McKenzie; Peter D. Kinny

doi:10.1071/ASEG2006ab027

ISSN: 2202-0586
E-ISSN:

oa The Mozambique Ocean Suture in Southern India: Age and Significance of Granulites in the Palghat-Cauvery Shear Zone System
Authors Alan S. Collins^a, M. Santosh^b, Louise Kropinski^c, Martin P. Hand^d, Clark Chris^e, K. Saieev^f, Stacey McKenzie^g and Peter D. Kinny^h
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^a Continental Evolution Research Group School of Earth and Environmental Sciences, The University of Adelaide University, Australia, Alan. [email protected] ^b Faculty of Science, Kochi University, , Akebono-cho 2-5-1 Kochi 780-8520, Japan, [email protected] ^c continental Evolution Research Group School of Earth and Environmental Sciences, The University of Adelaide University, Australia, [email protected] ^d Continental Evolutbn Research Group School of Earth and Environmental Sciences, The University of Adelaide University, , Australia, [email protected] ^e Continental Evolution Research Group School of Earth and Environmental Sciences, The University of Adelaide University,, Australia, [email protected] ^f Research Institute of Natural Sciences, Okayama University of Science, , 1-1 Ridai-cho, okayama 700-0005,, Japan, [email protected] ^g continental Evolution Research Group School of Earth and Environmental Sciences, The University of Adelaide University, Australia, [email protected] ^h Dept of Applied Geology Curtin University of Technology, , Perth, GPO Box U1987 [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2006, Issue ASEG2006 - 18th Geophysical Conference, Dec 2006, p. 1 - 3
DOI: https://doi.org/10.1071/ASEG2006ab027
- Published online: 01 Dec 2006

Abstract

The Neoproterozoic oceans that closed as Gondwana amalgamated left a cryptic, yet recognisable, record in the resulting orogens. These consist of Neoproterozoic oceanic or ocean-margin protoliths, relatively high-pressure metamorphic belts separating distinct crustal domains, and Neoproterozoic provenance fronts.

The southern Indian Palghat-Cauvery shear zone system, is interpreted as the remains of the Neoproterozoic Mozambique Ocean, because: a) it separates Archaean and Palaeoproterozoic granulites from the extensive Neoproterozoic-Cambrian Southern Granulite Domain; b) it contains mafic gneisses that may have formed within a Neoproterozoic Ocean; c) it preserves distinctive high pressure, ultra-high temperature granulites that were metamorphosed in the Cambrian Malagasy Orogeny, and; d) it isolates southern Indian Proterozoic metasediments that are unlikely to be sourced from north of the shear system.

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Article Type: Research Article

Keyword(s): EPMA monazite; India; metamorphism; SHRIMP; tectonic evolution

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oa The Mozambique Ocean Suture in Southern India: Age and Significance of Granulites in the Palghat-Cauvery Shear Zone System

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