| 大别山碧溪岭榴辉岩激光探针40Ar-39Ar年龄 |
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| 引用本文： | 胡世玲.大别山碧溪岭榴辉岩激光探针40Ar-39Ar年龄[J].地质科学,1999,34(4):427-431. |
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| 作者姓名： | 胡世玲 |
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| 作者单位： | 1. 中国科学院地质研究所, 北京100029;2. 中国科学院广州地球化学所, 广州510640 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用激光探针40Ar-39Ar法对大别山碧溪岭榴辉岩样品中的石榴石和绿辉石单颗粒矿物进行原位测定,获得了两条等时线年龄。结果表明该区榴辉岩经历了两期构造热事件:榴辉岩超高压变质作用发生在加里东期,燕山期年龄为快速抬升折返的热事件年代记录。
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| 关 键 词： | 大别山碧溪岭 榴辉岩 激光探针 40Ar-39Ar年龄 |
| 收稿时间： | 1998-12-09 |
| 修稿时间： | 1998-12-09; |
LASER POROBE ~(40)Ar-~(39)Ar ISOCHRON AGE OF ECLOGITE FROM BIXILING, DABIE UHP OROGENIC BELT |
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| Hu Shiling,Hao Jie,Li Yuejun.LASER POROBE ~(40)Ar-~(39)Ar ISOCHRON AGE OF ECLOGITE FROM BIXILING, DABIE UHP OROGENIC BELT[J].Chinese Journal of Geology,1999,34(4):427-431. |
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| Authors: | Hu Shiling Hao Jie Li Yuejun |
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| Institution: | 1. Institute of Geology, Chinese Academy of Sciences, Beijing 100029;2. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640 |
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| Abstract: | In this paper, 40 Ar- 39 Ar data has been obtained on garnet and omphosite from eclogite samples using laser probe. Two 40 Ar- 39 Ar isochron ages have been determined this way. They are 400 Ma and 164 Ma respectively. The age data show that the Bixiling eclogite subjected to two phases of tectono-thermal events. The ultra-high pressure metamorphism took place in Caledonian, and the rapid uplift occurred during Yanshanian. |
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| Keywords: | Bixiling in Dabie UHP belt Eclogite Laser probe 40 Ar- 39 Ar age |
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