| 豫西东秦岭造山带低压变质带的变质变形和变质反应 |
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| 引用本文： | 周汉文,陈能松.豫西东秦岭造山带低压变质带的变质变形和变质反应[J].地球科学,1994,19(1):9-18. |
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| 作者姓名： | 周汉文 陈能松 |
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| 作者单位： | 中国地质大学地质系 武汉430074 |
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| 基金项目： | 国家自然科学基金（48900015）资助项目 |
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| 摘 要： | 豫西西峡北部低压变质带受到４次变形改造。低压变质作用主要发生在Ｄ１和Ｄ２变形间期，形成黑云母－红柱石、石榴石－红柱石、十字石－红柱石和堇青石－红柱石４个递增变质带。由矿物变质反应识别出堇青石－红柱石带ｐ－Ｔ趋势具有减压增温特点，这一演化特征可能反映变质作用具有地壳拉张的地球动力学特点。
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| 关 键 词： | 低压 变质作用 变质反应 秦岭 矿物 |
Metamorphism, Deformation and Metamorphic Reactions of Low-Pressure Metamorphic Belt in East Qiriling Orogenic Belt, Western Henan |
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| Zhou Hanwen,Chen Nengsong.Metamorphism, Deformation and Metamorphic Reactions of Low-Pressure Metamorphic Belt in East Qiriling Orogenic Belt, Western Henan[J].Earth Science-Journal of China University of Geosciences,1994,19(1):9-18. |
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| Authors: | Zhou Hanwen Chen Nengsong |
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| Abstract: | Low-pressure metamorphic belt (LPB)in northern Xixia of Western Henan were affected by four major deformation events. The low-pressure metamorphism took place mainly during the intermittence of D, and D2 deformation phases, forming four prograde metamorphic zones:biotite-andalusite zone, garnet-andalusite zone, staurolite-andalusite zone and cordierite-andalusite zone. The p-T trajectory constrained by mineral metamorphic reaction in cordierite-andalusite zone is characterized by increas-ing in temperature and decreasing in pressure. which reflects the crust extension geodynamics during metamorphism. |
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| Keywords: | low-pressure metamorphism relationship between metamorphism and deformation metamorphic reaction p-T trajectory crust extension Qinling Western Henan |
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