| Ages of sediment-hosted Himalayan Pb-Zn-Cu-Ag polymetallic deposits in the Lanping basin, China: Re-Os geochronology of molybdenite and Sm-Nd dating of calcite | |
| Zhang Jinrang; Wen Hanjie; Qiu Yuzhuo; Zhang Yuxu; Li Chao | |
| Corresponding Author | Wen Hanjie |
| 2013 | |
| Source Publication | Journal of Asian Earth Sciences
 |
| Volume | 73Issue:5Pages:284-295 |
| Abstract | The Lanping basin is a significant Pb-Zn-Cu-Ag mineralization belt of the Sanjiang Tethyan metallogenic province in China. Over 100 thrust-controlled, sediment-hosted, Himalayan base metal deposits have been discovered in this basin, including the largest sandstone-hosted Pb-Zn deposit in the world (Jinding), and several Cu +/- Ag +/- Co deposits (Baiyangping, Baiyangchang and Jinman). These deposits, with total reserves of over 16.0 Mt Pb + Zn, 0.6 Mt Cu, and 7000 t Ag, are mainly hosted in Meso-Cenozoic mottled clastic rocks, and strictly controlled by two Cenozoic thrust systems developed in the western and eastern segments of the Lanping basin. To define the metallogenic history of the study area, we dated nine calcite samples associated with copper sulfides from the Jinman Cu deposit by the Sm-Nd method and five molybdenite samples from the Liancheng Cu-Mo deposit by the Re-Os method. The calcite Sm-Nd age for the Jinman deposit (58 +/- 5 Ma) and the molybdenite Re-Os age for the Liancheng deposit (48 2 Ma), together with previously published chronological data, demonstrate (1) the Cu-Ag mineralization in the western Lanping basin mainly occurred in three episodes (i.e., similar to 56-54, 51-48, and 31-29 Ma), corresponding to the main- and late-collisional stages of the Indo-Asian orogeny; and (2) the Pb-Zn-Ag (+/- Cu) mineralization in the eastern Lanping basin lacked precise and direct dating, however, the apatite fission track ages of several representative deposits (21 +/- 4 Ma to 32 +/- 5 Ma) may offer some constraints on the mineralization age. |
| Keyword | Mineralization Epoch Calcite Sm–nd Age Molybdenite Re–os Dating Sediment-hosted Pb–zn–cu–ag Deposits Lanping Basin China |
| Subject Area | 矿床地球化学 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/5028 |
| Collection | 矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文 |
| Corresponding Author | Wen Hanjie |
| Recommended Citation GB/T 7714 | Zhang Jinrang,Wen Hanjie,Qiu Yuzhuo,et al. Ages of sediment-hosted Himalayan Pb-Zn-Cu-Ag polymetallic deposits in the Lanping basin, China: Re-Os geochronology of molybdenite and Sm-Nd dating of calcite[J]. Journal of Asian Earth Sciences,2013,73(5):284-295. |
| APA | Zhang Jinrang,Wen Hanjie,Qiu Yuzhuo,Zhang Yuxu,&Li Chao.(2013).Ages of sediment-hosted Himalayan Pb-Zn-Cu-Ag polymetallic deposits in the Lanping basin, China: Re-Os geochronology of molybdenite and Sm-Nd dating of calcite.Journal of Asian Earth Sciences,73(5),284-295. |
| MLA | Zhang Jinrang,et al."Ages of sediment-hosted Himalayan Pb-Zn-Cu-Ag polymetallic deposits in the Lanping basin, China: Re-Os geochronology of molybdenite and Sm-Nd dating of calcite".Journal of Asian Earth Sciences 73.5(2013):284-295. |
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