| 桐柏——大别山主要构造热事件及40Ar/39Ar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40Ar/39Ar地质定年研究[J].地球学报,15(z1):20-34. |
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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（470Ma-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 40Ar/39Ar定年 桐柏——大别山区 |
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| Main tectonothermal events and 40Ar/39Ar 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 of mountain-building movement througbout its whole history.In the Yangtze cycle(1000-761Ma)and the Caledonian cycle (470-401Ma)it was involved in the collision orogeny between the Sino-Korean and Yangtze blocks,followed by the strike-slipping in the early-middle Variscan cycle (357-314Ma).Its continent-continent imbrication orogeny occurred in the late Variscan (286-216Ma),Indosinian (224-185Ma) and Yanshanian (130-111Ma) stages.The Indosinian high-pressure and superhigh-pressure metamorphic rocks would be formed as a result of the imbrication orogeny.The Yanshanian mountain-building event was characterized by deep-seated tectono-magmatic activity accompanied rapid uplift. |
| keywords:tectonothermal events 40Ar/39Ar dating Tongbai-Dabie Mts. |
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