Middle Jurassic radiolarians and chert geochemistry, Dajiweng ophiolite, SW Tibet: Implications for Neotethyan Ocean evolution

Xiaohui Cui,Hui Luo,Jonathan C. Aitchison,Xin Li

Journal of Asian Earth Sciences（2021）

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摘要

•Sixty-one species of 39 genera are recovered firstly from the Dajiweng ophiolite.•The radiolarian assemblages are assigned to the upper Bajocian to lower Bathonian.•This fauna exhibits highly similar to coeval assemblages along the Yarlung Tsangpo suture zone.•Geochemistry of cherts show high SiO2 contents, lower MnO/TiO2 and LaN/CeN ratios.

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关键词

Radiolarians,Chert geochemistry,Yarlung Tsangpo suture zone,Southern Tibet,Neotethyan Ocean

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