Sm-Nd isotope study and dating on Honguleleng ophiolite in Xinjiang, China

descriptionPublicationkeyboard_double_arrow_right Article 01 Oct 1999 English Publisher:Springer Science and Business Media LLCJournal:Chinese Science Bulletin, volume 44, pages 1,914-1,917 (issn: 1001-6538, eissn: 1861-9541,

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Authors: Zhangdong Jin; Jianhua Huang; Fuchun Li;

doi: 10.1007/bf02886353

Sm-Nd isotope study and dating on Honguleleng ophiolite in Xinjiang, China

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Abstract

A study of the Sm-Nd isotope composition of Honguleleng ophiolite in Xinjiang, China, isochron age ((626±25)Ma),eNd(t) =8.40,and its model age (T DM Nd ) in the range of 1 180–1 208 Ma, indicates that the ophiolite was formed in the late stage of the Upper Sinian. In combination with its facies association, petrochemistry, REE patterns, trace elements and associated chromites orebodies, it is believed that the Honguleleng ophiolitic magma derived from the LREE-enriched, self-depleted mantle source and formed at paleo-ocean ridge. This ophiolite is a relic of an oceanic crust within the collision zone.

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