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| 秦岭勉县—略阳地区的构造混杂岩及其意义 | |
| 引用本文： | 李亚林,张国伟,等.秦岭勉县—略阳地区的构造混杂岩及其意义[J].岩石学报,2001,17(3):476-482. |
| 作者姓名： | 李亚林 张国伟 |
| 作者单位： | 1. 成都理工学院沉积地质研究所, 2. 西北大学地质学系, 3. 青岛海洋大学, |
| 基金项目： | 本文为国家自然科学基金重点项目(49732082)资助成果. |
| 摘 要： | 秦岭造山带勉县长坝和略阳横现河地区发现的混杂岩均由不同性质的构造岩块和基质组成，混杂岩基质为受到不同变质作用的泥质岩或砂岩，属泥沙质混杂岩；构造岩块包括原地岩块和外来岩块两种基本类型，岩块大小不一，成分和形态复杂，在混杂岩中分布无序，两地区混杂岩普遍受到不同程度的褶皱变形和剪切作用，并且与两侧岩层以剪切带接触，综合研究表明长坝，横现河混杂岩明显区别于沉积成因的滑塌堆积，具典型构造混杂岩的性质特点，是勉略板块缝合带的重要标志。 |
| 关 键 词： | 秦岭造山带 勉略缝合带 混杂岩 构造变形 变质作用 泥质岩 砂岩 |
| 修稿时间： | 2000年1月10日 |
Characteristics and implication of the tectonic melanges in Mianxian-Lueyang area, Qinling orogenic belt |
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| LI YaLin,ZHANG GuoWei,WANG ChengShan,LI SanZhong,FANG WeiXuan and YI HaiSheng.Characteristics and implication of the tectonic melanges in Mianxian-Lueyang area, Qinling orogenic belt[J].Acta Petrologica Sinica,2001,17(3):476-482. | |
| Authors: | LI YaLin ZHANG GuoWei WANG ChengShan LI SanZhong FANG WeiXuan and YI HaiSheng |
| Institution: | LI YaLin,ZHANG GuoWei,WANG ChengShan,LI SanZhong,FANG WeiXuan and YI HaiSheng . Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu,Chin,. Department of Geology,Northwest University,Xi'an |
| Abstract: | The Changba and Hengxianhe melange distributed in Mianlue area are both composed of matrix and various blocks. The matrix is composed of sandstones and mudstones that underwent different metamorphism. The blocks in two melanges can be subdivided into local and exotic blocks, They are different in size, lithological composition and distributed disorderly in melange. The boundary of the two melanges with surrounding stratigraphic units are shear zones. That's distingushed tectonic melange from deformed conglomerates. The identification of Changba and Hengxianhe melanges is one of important evidences for the Mianlue suture zone. |
| Keywords: | Qinling orogenic belt Mianlue suture zone Melange Deformation |
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