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| 冈底斯斑岩铜矿带冲江及驱龙含矿斑岩体锆石ELA-ICP-MS及SHRIMP定年对比研究 | |
| 引用本文： | 莫济海,梁华英,喻亨祥,谢应雯,张玉泉.冈底斯斑岩铜矿带冲江及驱龙含矿斑岩体锆石ELA-ICP-MS及SHRIMP定年对比研究[J].大地构造与成矿学,2006,30(4):504-509. |
| 作者姓名： | 莫济海 梁华英 喻亨祥 谢应雯 张玉泉 |
| 作者单位： | 1. 中国科学院广州地球化学研究所,广东,广州,510640;中国科学院研究生院,北京,100039 2. 中国科学院广州地球化学研究所,广东,广州,510640 3. 桂林工学院,广西,桂林,541004 |
| 基金项目： | 国家自然科学基金，中国科学院知识创新工程项目 |
| 摘 要： | 利用ELA-ICP-MS分析技术对冈底斯斑岩铜矿带冲江及驱龙含矿斑岩体进行锆石U-Pb年龄测定,所得到的年龄分别为14.0±0.2Ma和17.0±0.2Ma。两个含矿岩体锆石ELA-ICP-MSU-Pb年龄和SHRIMP年龄在误差范围内基本一致。冲江含矿斑岩体成岩成矿可分为两期,每期成岩成矿时间跨度约1Ma;驱龙含矿斑岩体成岩成矿时间跨度约为1Ma。 |
| 关 键 词： | 冈底斯斑岩铜矿带 含矿斑岩 ELA-ICP-MS 锆石年龄 西藏 |
| 文章编号： | 1001-1552(2006)04-0504-06 |
| 收稿时间： | 2005-12-19 |
| 修稿时间： | 2006-03-27 |
COMPARISON OF ELA-ICP-MS AND SHRIMP U-PB ZIRCON AGES OF THE CHONGJIANG AND QULONG ORE-BEARING PORPHYRIES IN THE GANGDESE PORPHYRY COPPER BELT |
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| MO Jihai,LIANG Huaying,YU Hengxiang,XIE Yingwen,ZHANG Yuquan.COMPARISON OF ELA-ICP-MS AND SHRIMP U-PB ZIRCON AGES OF THE CHONGJIANG AND QULONG ORE-BEARING PORPHYRIES IN THE GANGDESE PORPHYRY COPPER BELT[J].Geotectonica et Metallogenia,2006,30(4):504-509. | |
| Authors: | MO Jihai LIANG Huaying YU Hengxiang XIE Yingwen ZHANG Yuquan |
| Abstract: | New zircon U-Pb ages of the Chongjiang and the Qulong ore-bearing porphyries in the Gangdese porphyry copper belt are analyzed by using ELA-ICP-MS dating technique. The ages for the early stages of both Chongjiang and the Qulong ore-bearing porphyries are 14.0±0.2 Ma and 17.0±0.2 Ma, respectively. Here the zircon ELA-ICP-MS U-Pb ages are similar to the SHRIMP U-Pb ages within error, suggesting that the ELA-ICP-MS method can be used to precisely date the ages of young zircon grains. The data also imply that the Chongjiang ore-bearing porphyry may undergo two stages of magma-ore-forming processes and the lifespan of each stage lasts about 1 Ma, and that the lifespan of the Qulong magmatic ore-formation system lasts about 1 Ma. |
| Keywords: | Gangdese porphyry copper belt ore-bearing porphyry ELA-ICP-MS zircon age Tibet |
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