| 陕西勉略宁三角区基本地质组成及演化 |
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| 引用本文： | 王根宝,崔继岗.陕西勉略宁三角区基本地质组成及演化[J].西北地质科学,1996,17(2):11-17. |
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| 作者姓名： | 王根宝 崔继岗 |
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| 作者单位： | 陕西地质矿产勘查开发局综合研究队 |
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| 摘 要： | 陕西勉略宁三角区发育４大套不同构造背景下所形成的岩石组合，表明区内经历了晚太古结晶基底与早中元古浅变质火山岩过渡基底形成、晚元古一早古生代扬子大陆边缘演化、勉略海槽演化及陆内造山４个大的复杂演化阶段，最终形成今日之基本构造格局与地质面貌．
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| 关 键 词： | 结晶基底，过渡基底，大陆边缘，勉略海槽，俯冲碰撞，陆内造山 |
BASIC GEOLOGICAL COMPOSITION AND EUOLUTION OF THE MIANLUENIN, SHAANXI |
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| Wang Genbao, Cui Jigang, Zhang Shengquan and Yue Kangmao.BASIC GEOLOGICAL COMPOSITION AND EUOLUTION OF THE MIANLUENIN, SHAANXI[J].Northwest Geoscience,1996,17(2):11-17. |
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| Authors: | Wang Genbao Cui Jigang Zhang Shengquan and Yue Kangmao |
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| Affiliation: | Research Team of Shaanxi Bureau of Exploration and Development of Geology and Mineral Resources |
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| Abstract: | From the different tectonic environments, four large sets of rock assemblages were developed in the Mianluenin trigonal area of Shaanxi. It shows that this area underwent four major and complex stages of evolution marked respectively by the formation of the LateArcheozoic crystalline basement and shallow-metamorphic volcanic transisent basement, the evolution of Yargtse continental margin in the Late Proterozoic-Early Palaeozoic, the evolution of Mianlu trench and the intracontinental orogeny. Finally, today' s geological struture and geomophic features came into being. |
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| Keywords: | Crystalline basement Transisent basemtnt Continental margin Mianlue Trench Subduction collision Intracontinental orogeny |
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