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The Central Ailaoshan ophiolite and modern analogs

Citation

Lai, C-K and Meffre, S and Crawford, AJ and Zaw, K and Halpin, JA and Xue, C-D and Salam, A, The Central Ailaoshan ophiolite and modern analogs, Gondwana Research, 26, (1) pp. 75-88. ISSN 1342-937X (2014) [Refereed Article]

Copyright Statement

Copyright 2013 Elsevier

DOI: doi:10.1016/j.gr.2013.03.004

Abstract

The Central Ailaoshan (CAL) ophiolite represents an important tectonic component of the Jinshajiang-Ailaoshan-Song Ma suture zone separating the South China and Indochina blocks in the mainland SE Asia. The CAL ophiolite occurs as a complex tectonic mélange, and preserves the history of the opening and closure of the once vast Jinshajiang-Ailaoshan-Song Ma branch of the Paleotethys. New and existing geological data indicate that the CAL ophiolite contains magmatic rocks generated by: (1) L. Devonian-E. Carboniferous (ca. 380-330 Ma) volcanic passive margin-breakup development in the NW Gondwana margin; (2) L. Permian (ca. 258 Ma) Emeishan large igneous province-related continental rift magmatism, together with (and intruded by) (3) earliest M. Triassic (ca. 244 Ma) continent-continent syn-collisional S-type granitoids. The Devono-Carboniferous suites of the CAL ophiolite are highly comparable with many continental margin-type Alpine Tethyan ophiolites. In addition, the various CAL magmatic suites have strong South China block-affinities with coeval magmatism particularly in the western South China block, Jinshajiang-, Song Ma-, and Song Da terranes.

Item Details

Item Type:Refereed Article
Keywords:Jinshajiang–Ailaoshan–Song Ma suture, ophiolite, paleotethys, Gondwana volcanic passive margin, South China–Indochina collision
Research Division:Earth Sciences
Research Group:Geology
Research Field:Tectonics
Objective Division:Mineral Resources (excl. Energy Resources)
Objective Group:Mineral Exploration
Objective Field:Mineral Exploration not elsewhere classified
Author:Lai, C-K (Dr Chun Lai)
Author:Meffre, S (Dr Sebastien Meffre)
Author:Crawford, AJ (Professor Anthony Crawford)
Author:Zaw, K (Professor Khin Zaw)
Author:Halpin, JA (Dr Jacqueline Halpin)
Author:Salam, A (Mr Masoe Salam)
ID Code:91783
Year Published:2014 (online first 2013)
Web of Science® Times Cited:27
Deposited By:Centre for Ore Deposit Research - CODES CoE
Deposited On:2014-05-29
Last Modified:2017-10-30
Downloads:0

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