Abundances and isotopic compositions of rhenium and osmium in pyrite samples from the Huaibei coalfield, Anhui, China
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- 作者：Guijian Liu ; Chen-Lin Chou ; Zicheng Peng and Gang Yang
- 关键词：Isotopic Composition ; Rhenium and Osmium ; Pyrite ; Huaibei coalfield
- 刊名：International Journal of Earth Sciences
- 出版年：2008
- 出版时间：May, 2008
- 年：2008
- 卷：97
- 期：3
- 页码：617-621
- 全文大小：301.9 KB
文摘
Two pyrite samples from the Shihezi Formation (Lower Permian), Huaibei coalfield, Anhui, China, have been analyzed for abundances and isotopic compositions of rhenium and osmium using negative thermal ion mass spectrometry. The Re–Os ages of the pyrites are 64.4 and 226 Ma, which are younger than the formation age of the coal seam. The pyrite samples may consist of pyrite formed at various stages during the history of coal formation. The γOs values of the two pyrite samples are + 17 and + 18, respectively. Such high γOs values are reported for the first time for recycles crustal materials from a sedimentary basin.