| 巴颜喀拉地体POG型花岗岩同位素年代学研究 |
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| 引用本文：陈文,Arnau,N.1997.巴颜喀拉地体POG型花岗岩同位素年代学研究[J].地球学报,18(3):261-266. |
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| 基金项目:《东昆仑及其邻区岩石圈缩短机制研究》项目,地质行业基金 |
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| 中文摘要:巴颜喀拉地体位于青藏高原北部，昆仑地体和羌塘地体之间，在地体的中－东部有大量花岗岩出露。黑云母＾３９Ａｒ－＾４０Ａｒ和锆石＾２０７Ｐｂ／＾２０６Ｐｂ同位素测年结果，显示侵位年龄在２２０～２１２Ｍａ之间。所经历的两次大的后期动力变质变形作用分别发生在１４８Ｍａ和１１０Ｍａ。 |
| 中文关键词:黑云母39Ar－40Ar年龄 锆石207Pb/206Pb年龄 同位素年代学 巴颜喀拉地体 |
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| Isotope Geochronology Study for “POG Type” Granite in Bayan Har Terrain |
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| Abstract:Bayan Har terrain lies in the northern part of the Tibet plateau, and between the Kunlun terrain and Qiantang terrain. there are many granite outcrops in the eastern part of Bayanhar terrain. The 39 Ar- 40 Ar age of biotite and the 207 Pb/ 206 Pb age of zircon indicate the granite body formed at 220～212 Ma. After that, the granite had undergone two times metamorphism and deformation at 148 Ma and 110Ma。 |
| keywords:Ar- 40 Ar age 207 Pb/ 206 P age isotope geochronolgy Bayan Har terrain |
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