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Ref ID: 28382
Ref Type: Journal Article
Authors: Qi, Zhang
Dejin, Zhou
Dasheng, Zhao
Zhongxiang, Huang
Song, Han
Xiuqin, Jia
Jinquan, Dong
Title: Ophiolites of the Hengduan Mountains, China: characteristics and tectonic settings
Date: 1994
Source: Journal of Southeast Asian Earth Sciences
DOI: 10.1016/0743-9547(94)90044-2
Abstract: The Hengduan Mountains contain Neotethyan and Palaeotethyan ophiolites. Dengqen ophiolite is representative of Neotethyan ophiolite. Its extrusive series are typical fore-arc boninite and are considered to have formed in a fore-arc basin setting. It was emplaced at the end of the Jurassic. The Palaeotethyan ophiolite is widely distributed over the Hengduan Mountains. It is composed mainly of metamorphic periootite (mainly lherzolite), gabbro and basalt. Cumulative ultramafic rocks and sheeted dike complex are rarely exposed. Basalt in most of Palaeotethyan ophiolites have geochemical features similar to MORBs. Basalts in most associated sedimentological evidence, most of the Paleotethyan ophiolites (except Changning-Menglian ophiolite in big ocean basins) were formed in small ocean basins.
Date Created: 2/24/2012
Volume: 9
Number: 4
Page Start: 335
Page End: 344