| 桐柏─大别山主要构造热事件及￣（40）Ar／￣（39）Ar地质定年研究 |
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| 关键词:tectonothermal events ￣(40)Ar/￣(39)Ar dating Tongbai -Dabie Mts. |
| 基金项目:国家自然科学基金 |
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| MAIN TECTONOTHERMAL EVENTS AND ￣(40)Ar/￣(39)Ar DATING OF THE TONGBAI-DABIE MTS |
| The Tongbai-Dabie Mts.is a composite orogenic belt,which has been subjected to episodes ofmountain-building movement throughout its whole history,In the Yangtze cycle(1000-761Ma)andthe Caledonian cycle(470-401Ma)it was involved in the collision orogeny between the Sino- Koreanand Yangtze blocks, followed by the strike-slipping in the early-middle Variscan cycle(357-31 4Ma),Its continent-continent imbrication orogeny occurred in the late Variscan(286-26 1Ma),Indosinian(244-185Ma)and Yanshanian(130-111Ma)stages. The Indosinian high-pressure andsuperhigh-pressure metamorphic rocks would be formed as a result of the imbrication orogeny. TheYanshanian mountain-building event was characterized by deep-seated tectono-magmatic activity ac-companied by rapid uplift. |
| NIU Bao-gui,FU Yun-lian,LIU Zhi-gang,REN Ji-shun,CHEN Wen.1994.MAIN TECTONOTHERMAL EVENTS AND ￣(40)Ar/￣(39)Ar DATING OF THE TONGBAI-DABIE MTS[J].Acta Geoscientica Sinica,15(1,2):20-34. |
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