| Isotope Geochemistry of the Dongchuan Copper Deposit,Yunnan,SW China： Stratigraphic Chronology and Application of Lead Isotopes in Geochemical Exploration |
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| 引用本文： | 常向阳,朱炳泉.Isotope Geochemistry of the Dongchuan Copper Deposit,Yunnan,SW China： Stratigraphic Chronology and Application of Lead Isotopes in Geochemical Exploration[J].中国地球化学学报,2002,21(1):65-72. |
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| 作者姓名： | 常向阳 朱炳泉 |
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| 作者单位： | 常向阳(Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 519640, China;The State Key Lab. of Environmental Geochemistry, Institute of Geochemistry, Guiyang 550002, China);朱炳泉(Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 519640, China) |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划) |
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| 摘 要： |
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| 关 键 词： | 铜矿床 同位素地球化学 铅同位素 云南 指示同位素 地层年代学 调查 |
| 收稿时间： | 26 May 2010 |
Isotope geochemistry of the Dongchuan copper deposit, Yunnan, SW China: Stratigraphic chronology and application of lead isotopes in geochemical exploration |
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| Chang Xiangyang,Zhu Bingquan.Isotope geochemistry of the Dongchuan copper deposit, Yunnan, SW China: Stratigraphic chronology and application of lead isotopes in geochemical exploration[J].Chinese Journal of Geochemistry,2002,21(1):65-72. |
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| Authors: | Chang Xiangyang Zhu Bingquan |
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| Institution: | (1) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 519640 Guangzhou, China;(2) The State Key Lab. of Environmental Geochemistry, Institute of Geochemistry, 550002 Guiyang, China |
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| Abstract: | In this paper the Pb-Pb isochron method was used to determine the isotopic ages of the Luoxue Formation dolomites (1716 ±56
Ma), the Heishan Formation carbonaceous slates ( 1607 ±128 Ma) of the middle sub-group of the Kunyang Group and the Dayingpan
Formation carbonaceous slates (1258 ±70Ma) of the upper sub-group of the Kunyang Group. The age of the middle sub-group of
the Kunyang Group is about 1800 – 1600 Ma, belonging to the Late Paleo-Proterozoic, and that of the Dayingpan Formation in
the upper sub-group of the Kunyang Group is about 1200 – 1300 Ma, belonging to the Middle Proterozoic. In addition, the Pb
isotope chemical exploration techniques were used to study systematically the Pb isotopic compositions of rocks and ores across
the No. 14 vein in the middle segment of the No. 1 pit of the Tangdan copper deposit and the result showed that the Pb isotope
V1 values are negatively correlated with the copper contents. It is the first trial to use the systematic section method to
conduct Pb isotope chemical exploration.
This research project was financially supported jointly by the National Natural Science Foundation of China (Grant Nos. 49702022,
40073001) and the State 973 Program (No.G1999043215). |
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| Keywords: | Dongchuan copper deposit Pb-Pb isochron stratigraphic chronology Pb isotope chemical exploration |
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