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Ch4-rich fluid inclusions in the Yushigou mantle peridotite and their implications, North Qilian Mountains, China

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Chinese Science Bulletin

Abstract

Studies were carried out on the early phase of fluid inclusions which occur in residual olivines in harzburgite from the Yushigou ophiolitic mantle peridotite, the North Qilian Mountains. Components of these inclusions, analyzed by micro laser Raman spectroscopy, are dominantly CH, (70%–95%) with minor H2, N2, H2S, CO2,C2H4, C2H6, and C3H6 but there are no H2O,CO and SO2. The highly CH4-rich fluid was probably derived from an ancient deep mantle. This discovery plays an important role in all-round understanding of the fluid property of the upper mantle, especially the ancient oceanic upper mantle.

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Authors and Affiliations

  1. Xi’an Institute of Geology and Mineral Rrsources, CAGS, 710054, Xi’an, China

    Li Su, Shuguang Song & Zhihai Wang

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  1. Li Su
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  2. Shuguang Song
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  3. Zhihai Wang
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Su, L., Song, S. & Wang, Z. Ch4-rich fluid inclusions in the Yushigou mantle peridotite and their implications, North Qilian Mountains, China. Chin.Sci.Bull. 44, 1992–1995 (1999). https://doi.org/10.1007/BF02887126

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  • DOI: https://doi.org/10.1007/BF02887126

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