Sm-Nd and Ar-Ar Isotopic Dating of the Nuri Cu-W-Mo Deposit in the Southern Gangdese, Tibet: Implications for the Porphyry-Skarn Metallogenic System and Metallogenetic Epochs of the Eastern Gangdese
文献类型：期刊论文
| 作者 | Chen, Lei1,2; Qin, Kezhang1; Li, Guangming1; Li, Jinxiang1; Xiao, Bo1; Zhao, Junxing1; Fan, Xin1 |
| 刊名 | RESOURCE GEOLOGY
 |
| 出版日期 | 2016-07-01 |
| 卷号 | 66期号:3页码:259-273 |
| 关键词 | metallogenetic epochs of eastern Gangdese Nuri Cu-W-Mo Deposit skarn-porphyry magmatic hydrothermal system Sm-Nd and Ar-Ar dating Tibet |
| DOI | 10.1111/rge.12099 |
| 文献子类 | Article |
| 英文摘要 | The Nuri Cu-W-Mo deposit is a large newly explored deposit located at the southern margin of the Gangdese metallogenic belt. There are skarn and porphyry mineralizations in the deposit, but the formation age of the skarn and the relationship between the skarn and porphyry mineralizations are controversial. Constraints on the precise chronology are of fundamental importance for understanding the ore genesis of the Nuri deposit. To determine the formation age of the skarn, we chose garnets and whole rock skarn samples for Sm-Nd dating. We also selected biotite associated with potassic alteration for Ar-Ar dating to confirm the ore formation age of the porphyry mineralizations. The Sm-Nd ages of the skarn are 25.73 +/- 0.92 - 25.2 +/- 3.9Ma, and the age of the potassic alteration is 24.37 +/- 0.32Ma. The results indicate that the skarn and porphyry mineralization are coeval and belong to a unified magmatic hydrothermal system. Combined with a previous molybdenite Re-Os age, we think that the hydrothermal activity of the Nuri deposit lasted for 1.2 - 2.1 Myr, which indicates that the mineralization formed rapidly. The chronologic results indicate that the Nuri deposit formed in the period of transformation from compression to extension in the late collisional stage of the collision between the Indian and Eurasian continents. |
| WOS关键词 | RE-OS AGES ; U-PB ; INTRUSIVE ROCKS ; GARNET AGES ; EVOLUTION ; MINERALIZATION ; CONSTRAINTS ; MAGMATISM ; NEODYMIUM ; BELT |
| WOS研究方向 | Geology ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000379774100003 |
| 资助机构 | NSFC(41202056 ; NSFC(41202056 ; China Metallurgical Geology Bureau ; China Metallurgical Geology Bureau ; 40772066 ; 40772066 ; 41072059) ; 41072059) ; NSFC(41202056 ; NSFC(41202056 ; China Metallurgical Geology Bureau ; China Metallurgical Geology Bureau ; 40772066 ; 40772066 ; 41072059) ; 41072059) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53394]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Lei,Qin, Kezhang,Li, Guangming,et al. Sm-Nd and Ar-Ar Isotopic Dating of the Nuri Cu-W-Mo Deposit in the Southern Gangdese, Tibet: Implications for the Porphyry-Skarn Metallogenic System and Metallogenetic Epochs of the Eastern Gangdese[J]. RESOURCE GEOLOGY,2016,66(3):259-273. |
| APA | Chen, Lei.,Qin, Kezhang.,Li, Guangming.,Li, Jinxiang.,Xiao, Bo.,...&Fan, Xin.(2016).Sm-Nd and Ar-Ar Isotopic Dating of the Nuri Cu-W-Mo Deposit in the Southern Gangdese, Tibet: Implications for the Porphyry-Skarn Metallogenic System and Metallogenetic Epochs of the Eastern Gangdese.RESOURCE GEOLOGY,66(3),259-273. |
| MLA | Chen, Lei,et al."Sm-Nd and Ar-Ar Isotopic Dating of the Nuri Cu-W-Mo Deposit in the Southern Gangdese, Tibet: Implications for the Porphyry-Skarn Metallogenic System and Metallogenetic Epochs of the Eastern Gangdese".RESOURCE GEOLOGY 66.3(2016):259-273. |
入库方式： OAI收割
来源：地质与地球物理研究所
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