Re-Os Molybdenite Ages of the Shenduolong Skarn Mo-Pb-Zn Deposit and Geodynamic Framework, Qinghai Province
The Shiduolong skarn Mo-Pb-Zn deposit is located in the multi-metal metallogenic belt of E'lashan. The precise age of the ore deposit limits our understanding of the ore-forming processes and geodynamical setting. In spite of the K-Ar methods of analysis and testing in the Shiduolong mining are...
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| Format: | Article |
| Language: | English |
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Science Press, PR China
2014-11-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/id/797bbc61-2642-40cf-affb-a5bc0b9cfdcd |
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| author | LI Wen-liang XIA Rui QING Min LI Chao ZHANG Dong SUN Hao LU Ying-chuan LIU Peng ZHOU Ao-bo |
| author_facet | LI Wen-liang XIA Rui QING Min LI Chao ZHANG Dong SUN Hao LU Ying-chuan LIU Peng ZHOU Ao-bo |
| author_sort | LI Wen-liang |
| collection | DOAJ |
| description | The Shiduolong skarn Mo-Pb-Zn deposit is located in the multi-metal metallogenic belt of E'lashan. The precise age of the ore deposit limits our understanding of the ore-forming processes and geodynamical setting. In spite of the K-Ar methods of analysis and testing in the Shiduolong mining area and the periphery of intrusives (188-208 Ma and 368 Ma), whether or not thest ages can represent real mineralization times requires to be tested further. In this study, we carried out a Re-Os study of molybdenite from the Shuangqing deposit, providing fundamental data to build the mineral deposit model and reflect the geodynamical setting in this area. 6 molybdenite samples of the deposit yield Re-Os isotopic model ages ranging from 234.2 Ma to 240.1 Ma, with a weighted mean age of (236.1±2.1) Ma. A similar isochron age of (233.4±9.6) Ma is also obtained by the isochron regression. This result suggests that the Mo mineralization occurred in last Triassic. The Re contents of molybdenite indicate that ore-forming materials are derived from crust and aqueous fluids involved in the ore-forming stage. Based on the same of rock-forming in E'lashan and mineralization in Shiduolong Mo-Pb-Zn deposit, rock-forming and ore-forming were regarded as the same geodynamic background of India-Eurasia collision. The tectonic regime changing from developing oceanic rift to collision-extension make the thickened lower crust melt partially in the Indosinian magmatic-tectonic-metallogenic event. |
| first_indexed | 2024-04-10T16:10:41Z |
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| id | doaj.art-a3befe5ec11a4a3fa72f6c06e0ba66b9 |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T16:10:41Z |
| publishDate | 2014-11-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-a3befe5ec11a4a3fa72f6c06e0ba66b92023-02-10T00:59:56ZengScience Press, PR ChinaYankuang ceshi0254-53572014-11-01336900907ykcs-33-6-900Re-Os Molybdenite Ages of the Shenduolong Skarn Mo-Pb-Zn Deposit and Geodynamic Framework, Qinghai ProvinceLI Wen-liang0XIA Rui1QING Min2LI Chao3ZHANG Dong4SUN Hao5LU Ying-chuan6LIU Peng7ZHOU Ao-bo8Institute of Gold Geology, Chinese Armed Police Force, Langfang 065000, ChinaInstitute of Gold Geology, Chinese Armed Police Force, Langfang 065000, ChinaInstitute of Gold Geology, Chinese Armed Police Force, Langfang 065000, ChinaNational Research Center for Geoanalysis, Beijing 100037, ChinaInstitute of Gold Geology, Chinese Armed Police Force, Langfang 065000, ChinaInstitute of Gold Geology, Chinese Armed Police Force, Langfang 065000, ChinaInstitute of Gold Geology, Chinese Armed Police Force, Langfang 065000, ChinaInstitute of Gold Geology, Chinese Armed Police Force, Langfang 065000, ChinaInstitute of Gold Geology, Chinese Armed Police Force, Langfang 065000, ChinaThe Shiduolong skarn Mo-Pb-Zn deposit is located in the multi-metal metallogenic belt of E'lashan. The precise age of the ore deposit limits our understanding of the ore-forming processes and geodynamical setting. In spite of the K-Ar methods of analysis and testing in the Shiduolong mining area and the periphery of intrusives (188-208 Ma and 368 Ma), whether or not thest ages can represent real mineralization times requires to be tested further. In this study, we carried out a Re-Os study of molybdenite from the Shuangqing deposit, providing fundamental data to build the mineral deposit model and reflect the geodynamical setting in this area. 6 molybdenite samples of the deposit yield Re-Os isotopic model ages ranging from 234.2 Ma to 240.1 Ma, with a weighted mean age of (236.1±2.1) Ma. A similar isochron age of (233.4±9.6) Ma is also obtained by the isochron regression. This result suggests that the Mo mineralization occurred in last Triassic. The Re contents of molybdenite indicate that ore-forming materials are derived from crust and aqueous fluids involved in the ore-forming stage. Based on the same of rock-forming in E'lashan and mineralization in Shiduolong Mo-Pb-Zn deposit, rock-forming and ore-forming were regarded as the same geodynamic background of India-Eurasia collision. The tectonic regime changing from developing oceanic rift to collision-extension make the thickened lower crust melt partially in the Indosinian magmatic-tectonic-metallogenic event.http://www.ykcs.ac.cn/en/article/id/797bbc61-2642-40cf-affb-a5bc0b9cfdcdmolybdenitere-os agingskarn depositrock-forming timegeodynamic frameworkshiduolong in qinghai province |
| spellingShingle | LI Wen-liang XIA Rui QING Min LI Chao ZHANG Dong SUN Hao LU Ying-chuan LIU Peng ZHOU Ao-bo Re-Os Molybdenite Ages of the Shenduolong Skarn Mo-Pb-Zn Deposit and Geodynamic Framework, Qinghai Province Yankuang ceshi molybdenite re-os aging skarn deposit rock-forming time geodynamic framework shiduolong in qinghai province |
| title | Re-Os Molybdenite Ages of the Shenduolong Skarn Mo-Pb-Zn Deposit and Geodynamic Framework, Qinghai Province |
| title_full | Re-Os Molybdenite Ages of the Shenduolong Skarn Mo-Pb-Zn Deposit and Geodynamic Framework, Qinghai Province |
| title_fullStr | Re-Os Molybdenite Ages of the Shenduolong Skarn Mo-Pb-Zn Deposit and Geodynamic Framework, Qinghai Province |
| title_full_unstemmed | Re-Os Molybdenite Ages of the Shenduolong Skarn Mo-Pb-Zn Deposit and Geodynamic Framework, Qinghai Province |
| title_short | Re-Os Molybdenite Ages of the Shenduolong Skarn Mo-Pb-Zn Deposit and Geodynamic Framework, Qinghai Province |
| title_sort | re os molybdenite ages of the shenduolong skarn mo pb zn deposit and geodynamic framework qinghai province |
| topic | molybdenite re-os aging skarn deposit rock-forming time geodynamic framework shiduolong in qinghai province |
| url | http://www.ykcs.ac.cn/en/article/id/797bbc61-2642-40cf-affb-a5bc0b9cfdcd |
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