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The genetic relationship between Habo alkaline intrusion and its surrounding deposits, Yunnan Province, China: geological and S-Pb isotopic evidences
Zhongneng Meng;  Qian Zhang;  Lin Ye;  Yupin Liu;  Jiangbo Lan;  Dapeng Wang
2016
发表期刊Acta Geochimica
卷号35期号:4页码:391-407
摘要

The Habo alkaline intrusion, which is located in the south of the Sanjiang area, Yunnan Province, China, is a typical Cenozoic alkaline intrusion. There are a series of small to medium-sized Au and Pb–(Zn) deposits around this intrusion. Those deposits are spatially associated with the Habo alkaline intrusion. (1) The δ34S values of sulfides from Au deposits range from −1.91 ‰ to 2.69 ‰, which are similar to those of Pb–(Zn) deposits (−3.82 ‰ to −0.05 ‰) and both indicate a much greater contribution from magma. (2) The Habo alkaline intrusion has relatively homogeneous Pb isotopic compositions with 206Pb/204Pb ranging from 18.608 to 18.761, 207Pb/204Pb from 15.572 to 15.722 and 208Pb/204Pb from 38.599 to 39.110. These Pb isotope ratios are similar to those of Au deposits, whose 206Pb/204Pb range from 18.564 to 18.734, 207Pb/204Pb from 15.582 to 15.738 and 208Pb/204Pb from 38.592 to 39.319. Pb ratios in both the intrusion and Au deposits suggest that Pb mainly derived from the depth, probably represents a mixture of mantle and crust. Pb–(Zn) deposits, however, show a decentralized trait, and most of them are similar to that of the alkaline intrusion with 206Pb/204Pb ranging from 18.523 to 18.648, 207Pb/204Pb from 15.599 to 15.802, and 208Pb/204Pb from 38.659 to 39.206. (3) In the plumbotectonic diagram 207Pb/204Pb versus 206Pb/204Pb, almost all of Au and Pb–(Zn) deposits have the same projection area with the Habo alkaline intrusion, which indicates that those deposits almost share the same source with the alkaline intrusion. (4) Isotopic age of the Habo alkaline intrusion is 36–33 Ma, which is similar to that of Beiya, whose ore-related alkaline porphyries age is 38–31 Ma and molybdenite Re–Os age is 36.9 Ma. Therefore, along with S–Pb isotope traits, we suggest that the Habo Au and Pb–(Zn) deposits should be typically Ailaoshan-Red RiverCenozoicalkaline-related deposits and ore-forming ages of these deposits should be later than that of the Habo alkaline intrusion.

关键词The Habo Au And Pb–(Zn) Deposits Alkaline Intrusion Ore Genesis S–pb Isotope Analyses Source Materials
收录类别EI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/7703
专题矿床地球化学国家重点实验室
作者单位State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences
第一作者单位中国科学院地球化学研究所
推荐引用方式
GB/T 7714
Zhongneng Meng;Qian Zhang;Lin Ye;Yupin Liu;Jiangbo Lan;Dapeng Wang. The genetic relationship between Habo alkaline intrusion and its surrounding deposits, Yunnan Province, China: geological and S-Pb isotopic evidences[J]. Acta Geochimica,2016,35(4):391-407.
APA Zhongneng Meng;Qian Zhang;Lin Ye;Yupin Liu;Jiangbo Lan;Dapeng Wang.(2016).The genetic relationship between Habo alkaline intrusion and its surrounding deposits, Yunnan Province, China: geological and S-Pb isotopic evidences.Acta Geochimica,35(4),391-407.
MLA Zhongneng Meng;Qian Zhang;Lin Ye;Yupin Liu;Jiangbo Lan;Dapeng Wang."The genetic relationship between Habo alkaline intrusion and its surrounding deposits, Yunnan Province, China: geological and S-Pb isotopic evidences".Acta Geochimica 35.4(2016):391-407.
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