| 琼中高级变质杂岩中单颗粒锆石Pb-Pb年龄及其地质意义 |
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| 关键词:high grade metamorphic complexes gneisses granulites charnockites single zircon Pb-Pb dating middle Hainan Island |
| 基金项目:国家自然基金 |
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| High Grade Metamorphic Complexes in Middle Hainan Island: Ages of the Pb-Pb Single Zircons and Their Geological Significance |
| The high grade metamorphic complexes in middle Hainan Island are composed of gneisses, migmatites, granulites and charnockites.Having Studied Pb_Pb dating of single zircons from gneisses and granulites,the authors hold that the complexes were transfomed by two Mesoproterozoic and Caledonian tectonic events.Based on geological analysis,it is suggested that the basement in middle Hainan Island has experienced three important evolutional stages, i.e.the formation of Neoarchean supercrust rocks, the Mesoproterozoic metamorphic_magmatic reformation and the transformation by the Caledonian tectonic event. |
| ZHANG Ye-ming,ZHANG Ren-jie,HU Ning,ZHANG Shu-huai,DUAN Qi-fa.1999.High Grade Metamorphic Complexes in Middle Hainan Island: Ages of the Pb-Pb Single Zircons and Their Geological Significance[J].Acta Geoscientica Sinica,20(3):284-288. |
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