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| 桂中坳陷北部河池—宜山褶皱—冲断带分析 | |
| 引用本文： | 侯宇光,汪新文,吴立群,樊浩.桂中坳陷北部河池—宜山褶皱—冲断带分析[J].现代地质,2009,23(3). |
| 作者姓名： | 侯宇光 汪新文 吴立群 樊浩 |
| 作者单位： | 1. 中国地质大学,资源学院,湖北,武汉,430074;中国地质大学,构造与油气教育部重点实验室,湖北,武汉,430074 2. 中国地质大学,地球科学与资源学院,北京,100083 3. 中国地质大学,资源学院,湖北,武汉,430074 4. 中国石油,辽河油田分公司,辽宁,盘锦,124010 |
| 基金项目： | 国家青年自然科学基金，中国石油化工股份有限公司重点科技工程项目，中国地质大学地质过程与矿产资源国家重点实验室开放基金，中国地质大学(武汉)资源学院优秀青年教师资助计划项目 |
| 摘 要： | 通过对典型实测地质剖面的综合构造解释和变形缩短量的估算,发现河池—宜山褶皱—冲断带在逆冲方向、构造样式和变形缩短强度上具有明显的分段性:河池段和宜山段变形强度中等,变形样式分别为由北向南逆冲的逆冲—推覆构造和叠瓦状构造;柳城段变形强度最大,为由南向北逆冲的叠瓦状构造;英山段变形最弱,为由北向南逆冲兼有走滑性质的正花状构造。河池—宜山褶皱—冲断带内部发育的横向调节带和纵向传递带对不同区段构造样式和变形强度具有调节作用。最后,结合区域变形特征,探讨了河池—宜山褶皱—冲断带差异变形的成因机制。 |
| 关 键 词： | 构造样式 调节带 褶皱—冲断带 分段性 河池—宜山 |
Analysis of the Hechi-Yishan Fold-thrust Zone in North of Guizhong Depression |
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| HOU Yu-guang,WANG Xin-wen,WU Li-qun,FAN Hao.Analysis of the Hechi-Yishan Fold-thrust Zone in North of Guizhong Depression[J].Geoscience——Journal of Graduate School,China University of Geosciences,2009,23(3). | |
| Authors: | HOU Yu-guang WANG Xin-wen WU Li-qun FAN Hao |
| Abstract: | Obvious differences in thrust directions,structural styles,and deformation levels are observed at different structural segments of the Hechi-Yishan fold-thrust zone as indicated by the results of geological cross-sections structural explanations and the calculated amounts of structural deformation.In Hechi and Yishan sections,with a middle tectonic deformation intensity,thrust-nappe structure and imbricate structure thrusting from north to south develop respectively.In Liucheng section,the largest structural deformation quantity,and imbricate structures thrusting from south to north are discovered.In Yingshan structural segment,a gentle deformation and normal strike-slip flower-shaped structures with thrusting from north to south are observed.Lateral and vertical transform zones in the Hechi-Yishan fold-thrust belt are assumed to have regulative effects on these differences.On the basis of deformation characteristics in different segments and the tectonic setting,deformation mechanism of the fold-thrust zone was discussed. |
| Keywords: | structural style accommodation zone fold-thrust zone segmentation Hechi-Yishan |
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