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| 阿尔金-西昆仑加里东中晚期构造作用在塔里木盆地塘古兹巴斯凹陷中的响应 | |
| 引用本文： | 何碧竹,焦存礼,许志琴,蔡志慧,刘士林,张英利.阿尔金-西昆仑加里东中晚期构造作用在塔里木盆地塘古兹巴斯凹陷中的响应[J].岩石学报,2011,27(11):3435-3448. |
| 作者姓名： | 何碧竹 焦存礼 许志琴 蔡志慧 刘士林 张英利 |
| 作者单位： | 1. 大陆构造与动力学国家重点实验室,中国地质科学院地质研究所,北京100037 2. 中国石油化工股份有限公司石油勘探开发研究院,北京,100083 3. 中国地质科学院矿产资源研究所,北京,100037 |
| 基金项目： | 本文受国土资源部行业基金项目(201011034)、中国石化股份有限公司科技开发部项目(YPH08110)、中国地质调查局基础研究项目(1212011121275)、国家自然科学基金创新群体项目(40921001)和国家重大专项(2011ZX05005-002)联合资助. |
| 摘 要： | 对塔里木盆地塘古兹巴斯凹陷志留系与奥陶系(S/O3)、上泥盆统与志留系(D3d/S)2个区域角度不整合的三层结构特征及属性进行详细研究,分析了不整合面下构造变形特征、不整合面结构类型分布、不整合面上初始沉积砾岩成分及其物源.发现加里东中期该区形成了塔里木盆地独特的不整合结构,构造不整合(S/O3)明显地受北东东-南西西走向逆冲断裂系控制,在凹陷北部逆冲断裂系上盘发育中等角度单斜不整合和褶皱不整合,沿断裂带形成了多个角度不整合带；加里东晚期不整合(D3 d/S)区域上呈现由南向北的剥蚀特征,局部受继承性再活动的断裂控制存在北东东向的中角度单斜不整合带,且构成了加里东中期及晚期的叠合不整合.两期不整合面上的初始沉积砂砾岩有明显差异,加里东中期不整合面上初始沉积以近源的沉积岩为主、物源来自被动大陆边缘；晚期不整合面上的初始沉积砾岩主要为硅质岩和变质岩,物源主要来自较远的被动大陆边缘及大陆岛弧.综合分析表明,晚奥陶世末塘古兹巴斯凹陷主要受到阿尔金、西昆仑的构造作用；中志留世-晚泥盆世主要受到西昆仑及阿尔金碰撞造山活动共同作用.在加里东构造运动中晚期,凹陷中控制不整合发育的NEE向逆冲断裂系与南阿尔金断裂在活动时限、强度、区域应力场上具有可比性.加里东中、晚期不整合的三层结构及其属性是反映阿尔金-西昆仑早古生代构造运动发生、发展、终结动态演化过程的良好证据. |
| 关 键 词： | 不整合三层结构 构造运动及过程 加里东中晚期 塘古兹巴斯凹陷 塔里木盆地 |
| 收稿时间： | 2011/8/16 0:00:00 |
| 修稿时间： | 2011/9/26 0:00:00 |
Manifestation of the Middle-Late Caledonian tectonic movement along the Altun-West Kunlun orogenic belt in the Tangguzibas depression, Tarim basin. |
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| HE BiZhu,JIAO CunLi,XU ZhiQin,CAI ZhiHui,LIU ShiLin and Zhang YingLi.Manifestation of the Middle-Late Caledonian tectonic movement along the Altun-West Kunlun orogenic belt in the Tangguzibas depression, Tarim basin.[J].Acta Petrologica Sinica,2011,27(11):3435-3448. | |
| Authors: | HE BiZhu JIAO CunLi XU ZhiQin CAI ZhiHui LIU ShiLin and Zhang YingLi |
| Institution: | State Key Laboratory for Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;Exploration and Production Research Institute of Sinopec, Beijing 100083, China;State Key Laboratory for Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;State Key Laboratory for Continental Tectonics and Dynamics, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;Exploration and Production Research Institute of Sinopec, Beijing 100083, China;Institute of Mineral Resource, Academy of Geological Sciences, Beijing 100037, China |
| Abstract: | Based on regional seismic profiles,core and drill data of well in Tangguzibas depression,Tarim basin,we research the three-layer configuration of two unconformities,the one occurred between Early Silurian to Late Ordovician(S/O3,T70 seismic reflection horizon),the others emerged between Late Devonian to Silurian(D3d/S,T60 seismic reflection horizon).The structure deformation underlying unconformities,the distribution of configuration type of unconformities,the compositions and provenance of elementary sedim... |
| Keywords: | Three-layer configuration of unconformity Tectonic movements and evolutions Middle and Late of Caledonian Tangguzibas depression Tarim basin |
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