| 渤海南部新生代构造发育与演化特征 |
| |
| 引用本文： | 张晓庆,吴智平,周心怀,牛成民,李伟,任健,张婧.渤海南部新生代构造发育与演化特征[J].大地构造与成矿学,2017,41(1):50-60. |
| |
| 作者姓名： | 张晓庆 吴智平 周心怀 牛成民 李伟 任健 张婧 |
| |
| 作者单位： | 1. 中国石油大学(华东)地球科学与技术学院,山东青岛,266580;2. 中国石油大学(华东)地球科学与技术学院,山东青岛266580;青岛海洋科学与技术国家实验室,山东青岛266235;3. 中海石油(中国)有限公司天津分公司,天津,300452 |
| |
| 基金项目： | 国家科技重大专项，中央高校基本科研业务费专项资金 |
| |
| 摘 要： | 利用三维地震资料及钻井资料,在对断裂体系精细刻画的基础上,结合区域地球动力学背景,就渤海湾盆地渤海海域南部地区(包括渤南低凸起、黄河口凹陷、莱北低凸起、莱州湾凹陷)新生代的构造发育演化特征及沉积–沉降中心迁移规律进行了详细分析。研究结果表明:断裂体系存在三组优势发育方向,NNE向断裂属郯庐断裂带渤南段,可分为西、中、东三个分支带,走滑特征明显;近EW向及NE向为伸展性质的控凹、控带断裂;三组断裂相互切割,形成了渤海南部地区"东西分带、南北分块"的构造格局;古近纪具有两个沉积–沉降中心,黄河口凹陷中心受控于近EW向断裂,莱州湾凹陷的沉积中心受近EW向和NNE向断裂共同控制,至新近纪,沉积中心呈由南向北迁移的规律;渤海南部地区构造演化体现了断–拗与走滑的叠加效应,可以划分为孔店组–沙四段沉积期的初始裂陷、沙三段沉积期的伸展裂陷、沙二段–东营组沉积期的走滑–伸展和馆陶组沉积期以来的走滑–裂后拗陷四个阶段。
|
| 关 键 词： | 构造特征 渤海南部 郯庐断裂带 新生代 渤海湾盆地 |
Cenozoic Tectonic Characteristics and Evolution of the Southern Bohai Sea |
| |
| ZHANG Xiaoqing,WU Zhiping,ZHOU Xinhuai,NIU Chengmin,LI Wei,REN Jian,ZHANG Jing.Cenozoic Tectonic Characteristics and Evolution of the Southern Bohai Sea[J].Geotectonica et Metallogenia,2017,41(1):50-60. |
| |
| Authors: | ZHANG Xiaoqing WU Zhiping ZHOU Xinhuai NIU Chengmin LI Wei REN Jian ZHANG Jing |
| |
| Abstract: | Based on the interpretation of well logging and 3D seismic data,this paper meticulously depicted the fault characteristics and identified the evolution of the subsidence and sediment center of the southern Bohai Sea area (the Bonan Low Uplift,Huanghekou Sag,Laibei Low Uplift and Laizhouwan Sag) in Cenozoic.The results show that the faults in the study area are predominantly NNE trending,subparallel-EW trending and NE trending.Being part of the Tan-Lu Fault,the NNE trending faults are characterized by strike-slipping and can be divided into west,middle and east branches.Subparallel-EW trending and NE trending faults are extensional faults and control the formation of the sags and structural belts of the study area.The cross-cutting of above three group faults led to E-W directional zonation and S-N directional blocking in the southern Bohai Sea area.In Paleogene,there were two subsidence and sediment centers located in the Huanghekou Sag and Laizhouwan Sag respectively.The former was controlled by EW trending fault,while the latter was controlled by both subparallel-EW trending and NNE trending faults.In Neogene,the latter migrated northward and merged with the former.The tectonic evolution of the southern Bohai Sea area embodies the superimposition effect of rifting-depression and strike-slipping and can be divided into the following four stages,the initial rifling stage in Ek-Es4 sedimentary period,the rifling extensional stage in Es3 sedimentary period,the strike-slip extensional stage in Es2-Ed sedimentary period and the strike-slip depression stage from Ng sedimentary period to now. |
| |
| Keywords: | structural characteristics southern Bohai Sea area Tan-Lu Fault Zone Cenozoic Bohai Bay Basin |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
