| 西藏定结地区变质核杂岩研究 |
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| 引用本文： | 刘德民.西藏定结地区变质核杂岩研究[J].地质找矿论丛,2003,18(1):1-5. |
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| 作者姓名： | 刘德民 |
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| 作者单位： | 中国地质大学,地球科学学院,湖北,武汉,430074 |
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| 基金项目： | 国土资源部1:25万定结幅(H45C004003)，区域地质调查项目(200013000145)资助。 |
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| 摘 要： | 喜马拉雅造山带定结地区近EW向展布两条变质核杂岩带：高喜马拉雅变质核杂岩带和拉轨岗日－孜松变质核杂岩带，在研究区以拉轨岗日－孜松变质核杂岩为典型代表。该变质核杂岩带由多个变质核杂岩体组成，各变质核杂岩体具典型的三层结构。核部由两期（加里东期和喜山期）花岗岩和拉轨岗日群变质岩组成；拆离断层、韧性剪切带及糜梭岩带组成滑脱层；盖层由二叠系、三叠系浅变质岩或未变质的沉积岩系组成。
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| 关 键 词： | 喜马拉雅造山带 伸展构造 变质核杂岩 定结地区 西藏 韧性剪切带 拆离断层 |
| 文章编号： | 1001-1412(2003)01-0001-05 |
| 收稿时间： | 2002/6/9 0:00:00 |
| 修稿时间： | 2002年6月9日 |
THE RESEARCH ABOUT EXTENSIONAL METAMOPHIC CORE COMPLEXES IN DINGJIE, XIZANG |
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| LIU De-min.THE RESEARCH ABOUT EXTENSIONAL METAMOPHIC CORE COMPLEXES IN DINGJIE, XIZANG[J].Contributions to Geology and Mineral Resources Research,2003,18(1):1-5. |
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| Authors: | LIU De-min |
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| Institution: | China University of Geosciences, Wuhan 430074, China |
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| Abstract: | Two metamorphic core complexes zones exhibit rough East-West trending in Dingjie district in Himalayan orogen belt, i.e. the High Himalayan metamorphic core complex zone and Laguigangri-Zisong metamorphic core complex zone. The latter consists of two metamorphic core complex bodies characterized by typical three-layer framework.The nucleus is made up of twice periods of granite and Laguigangri Group''s metamorphic rocks;and detachment zone, ductile shear zone and mylonite zone form the decollement zone;the caprock is constituted by sedimentary rock series of Permian and Triassic. |
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| Keywords: | Himalayan orogen belt stretching structure metamorphic core complex Tibet Dingjie area Xizang |
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