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The bio-barite in witherite deposits from Southern Qinling and its significance
Zhicheng Lü;  Congqiang Liu;  Jiajun Liu;  Fengchang Wu
2004
发表期刊Progress in Natural Science
卷号14期号:10页码:889-895
摘要

Being stratiform or stratoid, the Huangboshuwan witherite deposit at Zhiyang and the Wenyuhe witherite-barite deposit at Zhushan occur in the lower Lower Cambrian siliceous rocks and the orebodies are remarkably controlled by lithological character and petrography. Carbon and oxygen isotopic studies of witherite, barytocalcite and calcite have shown that the carbon, involved in the formation of these minerals, was derived largely from organic carbon resultant from degradation, polycondensation and dehydroxylation of bio-organic matter in sediments at the early stage of diagenesis. Extensive occurrence of bio-barite strongly evidenced that Ba2+ was concentrated and settled down in the form of bio-barite on the seafloor as a result of biological processes, thereafter forming the initially enriched orebodies of barium deposits. The witherite was metasomatic products of bio-barite under the action of sulfate-reducing bacteria and organic and inorganic reduction.

关键词Bio-barite carbon And Oxygen Isotopes early Diagenesis witherite Deposits
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8267
专题环境地球化学国家重点实验室
作者单位1.Development and Research Center , China Geological Survey , Beijing, 100037, China
2.Institute of Geochemistry, Chinese Academy of Sciences , Guiyang, 550002, China
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GB/T 7714
Zhicheng Lü;Congqiang Liu;Jiajun Liu;Fengchang Wu. The bio-barite in witherite deposits from Southern Qinling and its significance[J]. Progress in Natural Science,2004,14(10):889-895.
APA Zhicheng Lü;Congqiang Liu;Jiajun Liu;Fengchang Wu.(2004).The bio-barite in witherite deposits from Southern Qinling and its significance.Progress in Natural Science,14(10),889-895.
MLA Zhicheng Lü;Congqiang Liu;Jiajun Liu;Fengchang Wu."The bio-barite in witherite deposits from Southern Qinling and its significance".Progress in Natural Science 14.10(2004):889-895.
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