Skip to main content

Mineralization episode of porphyry copper deposits in the Jinshajiang-Red River mineralization belt: Re-Os dating

Abstract

Re-Os isotopic dating for the molybdenites from the porphyry copper deposits of the Jinshajiang-Red River mineralization belt in Yunnan Province yields isochron ages of 33.9±1.1 Ma for the Machangqing deposit and 34.4±0.5 Ma for the Tongchang deposit. This result shows that both the Machangqing and the Tongchang porphyry Cu-Mo deposits from two different ore-fields formed simultaneously. This new data and the published Re-Os model ages of molybdenite (35.4 Ma, 35.9 Ma, 36.2 Ma) of the Yulong porphyry copper deposit in Tibet, which is located in the same Jinshajiang-Red River mineralization belt as the Machangqing deposit and the Tongchang deposit, suggest that these three Cenozoic porphyry copper deposits in the Jin-shajiang-Red River mineralization belt were contemporary for their mineralization episode. That is to say, even their present locality is far away and nearly iso-distantly distributed, these three porphyry Cu(Mo) deposits belong to the same mineralization episode at the end of Eocene.

This is a preview of subscription content, access via your institution.

References

  1. Tang Renli, Luo Huaisong, Geology of the Yulong Porphyry Cu(Mo) Belt in Tibet (in Chinese), Beijing: Geological Publishing House, 1995, 320.

    Google Scholar 

  2. Du Andao, He Hongliao, Yin Ningwan et al., A study on the rheniumosmium geochronometry of molybdenites, Acta Geologica Sinica (in Chinese with English abstract), 1994, 68: 339–346.

    Google Scholar 

  3. Ma Hongwen, Granitoids and Mineralization in the Yulong Porphyry Copper Belt in Eastern Xizang (in Chinese), Beijing: Press of Chinese University of Geosciences, 1990, 157.

    Google Scholar 

  4. Rui Zongyao, Huang Zongke, Qi Guoming et al., Porphyry Cu(Mo) Deposits in China (in Chinese), Beijing: Geological Publishing House, 1984, 340.

    Google Scholar 

  5. Hu Xiangzao, Huang Zeng, Features of the alkalic-rich granitic porphyry in the western margin of the Yangtz Platform and discussion on its genesis, Geotectonica et Metallogenica (in Chinese with English abstract), 1997, 21(2): 173–180.

    Google Scholar 

  6. Zhang Yuquan, Xie Yingwen, Tu Guangchi, Preliminary study on the alkalic-rich intrusive rocks and their relationship with rift in the Ailaoshan-Jinshajiang belt, Acta Petrologica Sinica (in Chinese with English abstract), 1987, (1): 17–25.

  7. Zhang Yuquan, Xie Yingwen, Geochronology and Nd, Sr isotopic features of alkalic-rich intrusive rocks along the Ailaoshan-Jinshajiang belt, Science in China, Ser. D, 1997, 27(4): 289–293.

    Google Scholar 

  8. Fu Deming, Minerogenic series and metallogenic regularity of nonferrous, rare and precious metallic deposits in post-Indosinian intracontinental orogenic belt on southwestern margin of Yangtze Plateform (ed. Luo Yaonan), Contributions to Geology and Mineral Resources in Intracontinental Orogenic belt on Southwestern Margin of Yangtze Platform (in Chinese with English abstract), Chengdu: Sichuan Science and Technology Press, 1996, 120–128.

    Google Scholar 

  9. Zhao Zhun, Metallogenetic models of Pb-Cu-Mo-Au deposits related to Himalayan porphyry in Zhongdian-Dali-Jinping area, Yunnan Geology (in Chinese), 1995, 14(4): 333–341.

    Google Scholar 

  10. Luo Junlie, Yang Youhua, Zhao Zhun et al., Tethys Evolution of Western Yunnan and Mineralization of Major Metal Deposits (in Chinese), Beijing: Geological Publishing House, 1994.

    Google Scholar 

  11. Marsh, T. M., Einaudi, M. T., McWilliams, M., 40Ar/39Ar geochronology of Cu-Au and Au-Ag mineralization in the Potrerillos district, Chile, Economic Geology, 1997, 92: 784–806.

    Article  Google Scholar 

  12. Hou Zengqian, Qu Xiaoming, Wang Shuxian et al., Re-Os dating of molybdenites from the Gangdisi porphyry copper belt in Xizang Plateau: age limiting on mineralization and application to geodynamics, Science in China, Ser. D (in Chinese), 2003, 33(7): 609–618.

    Google Scholar 

  13. Wang Denghong, Yang Jianmin, Xue Chunji et al., Isotopic geochronology constraint on the gold mineralization of Himalayan in the Laicangjiang-Nujiang-Jinshajiang-Daduhe River Region, Southwestern China ((eds. Chen Yuchuan, Wang Denghong), Study on Himalayan Endogenic Mineralization (in Chinese with English abstract), Beijing: Seismic Press, 2001, 84–87.

    Google Scholar 

  14. Zhong Dalai, Tapponnier, P., Wu, Haiwei et al., Large-scale slide faults- important type of intracontinental deformation after collision, Chinese Science Bulletin, 1989, 34(7): 526–529.

    Google Scholar 

  15. Tapponnier, P., Lacassin, R., Leloup, P. H. et al., The Ailao Shan/Red River metamorphic belt Tertiary left-lateral shear between Indochina and South China, Nature, 1990, 343: 431–437.

    Article  Google Scholar 

  16. Leloup, P. H., Lacassin, R., Tapponnier, P. et al., The Ailao Shan-Red River shear zone (Yunnan, China), Tertiary transform boundary of Indochina, Tectonophysics, 1995, 251: 3–84.

    Article  Google Scholar 

  17. Yang Zhenyu, Sun Zhiming, Ma Xinghua et al., Palaeomagnetism study of Eogene along the Red River and its geological significance, Acta Geologica Sinica (in Chinese with English abstract), 2001, 75(1): 35–44.

    Google Scholar 

  18. Deng Wanming, Huang Xuan, Zhong Dalai, Alkalic-rich porphyry in the north sector of the Jinshajiang belt in western Yunnan and their relationship with inland deformation, Science in China, Ser. D (in Chinese), 1998, 28(2): 111–117.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Wang Denghong.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Wang, D., Qu, W., Li, Z. et al. Mineralization episode of porphyry copper deposits in the Jinshajiang-Red River mineralization belt: Re-Os dating. Sci. China Ser. D-Earth Sci. 48, 192 (2005). https://doi.org/10.1360/03yd0200

Download citation

  • Received:

  • DOI: https://doi.org/10.1360/03yd0200

Keywords

  • Re-Os isotopic dating
  • porphyry Cu deposits
  • Cenozoic
  • mineralization episode