| 孙建东.江西省船坑铜矿成矿岩体地球化学特征、锆石U-Pb定年及地质意义[J].地质与勘探,2016,52(3):506-517 |
| 江西省船坑铜矿成矿岩体地球化学特征、锆石U-Pb定年及地质意义 |
| Geochemical characteristics of metallogenetic rock and zircon U-Pb dating in the Chuankeng Cu deposit of Jiangxi Province and geological implications |
| 投稿时间：2015-04-14 修订日期：2016-03-08 |
| DOI： |
| 中文关键词: 船坑铜矿 地球化学 U-Pb定年 稀土元素 |
| 英文关键词: Chuankeng Cu deposit, geochemical, U-Pb dating, rare earth elements |
| 基金项目:中国地质调查局项目（编码：12120113065500）资助 |
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| 中文摘要: |
| 分析了船坑铜矿成矿岩体石英闪长玢岩主微量、稀土元素特征及锆石U-Pb测年数据，表明岩石具高钾偏铝质I型花岗岩特征，及岛弧成因岩浆特点；锆石稀土元素表明有地壳物质的加入，属壳幔混源。锆石U-Pb年龄162.9±3.6Ma，大致代表含矿岩体成岩年龄。该矿床形成于钦杭成矿带铜矿主成矿期，处于岩石圈拆沉或伸展-减薄的构造环境，受太平洋板块往欧亚大陆的俯冲的影响。 |
| 英文摘要: |
| This work analyzed features of main and trace, and rare earth elements and zircon U-Pb dating of the metallogenic rock, quartz diorite porphyrite, in the Chuanhang Cu deposit of Jiangxi Province. The results show that the rocks is characterized by high potassium aluminum type I granite and magma of island-arc genesis. The existence of Nb negative anomalies and rare earth elements implies the addition of crustal material into zircon, forming a crust-mantle mixed source. Zircon U-Pb age 162.9±3.6 Ma can largely represent the diagenetic time of ore-bearing rock. This deposit formed in the primary mineralization period of the Qinhang metallogenic zone, in a lithospheric delamination or extension - thinning tectonic environment, probably affected by the subduction of the Pacific plate beneath the Eurasia continent. |
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