| 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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| 引用本文：牛宝贵,富云莲,刘志刚,任纪舜,陈文.1994.桐柏─大别山主要构造热事件及￣（40）Ar／￣（39）Ar地质定年研究[J].地球学报,15(1,2):20-34. |
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| 基金项目:国家自然科学基金 |
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| 中文摘要:桐柏－大别山是一条复合造山带。在其演化过程中曾经历了扬子旋回（1000Ma－761Ma）和加里东旋回（4470Ma－401Ma）两个板块构造旋回的俯冲－碰撞造山作用，之后又经历了早、中华力西（357Ma－314Ma）的平移走滑和晚华力西（286Ma－261Ma）、印支期（224Ma－185Ma）、燕山期（130Ma－111Ma）逆掩或逆冲推覆的陆－陆叠覆造山作用。印支期的高压超高压变质岩系是在陆－陆叠覆造山作用下形成的。燕山期的造山不仅具显著的深层次构造岩浆作用特点，而且还伴随快速的隆升作用。 |
| 中文关键词:构造热事件，￣（40）Ar／￣（39）Ar定年，桐柏－大别山区 |
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| MAIN TECTONOTHERMAL EVENTS AND ￣(40)Ar/￣(39)Ar DATING OF THE TONGBAI-DABIE MTS |
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| Abstract: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. |
| keywords:tectonothermal events ￣(40)Ar/￣(39)Ar dating Tongbai -Dabie Mts. |
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