| 渤海湾盆地黄河口凹陷东洼断裂体系发育特征及其变形过程的构造物理模拟 |
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| 引用本文： | 杨海风,吕丁友,孙永河,赵野,张志强,赵梦. 渤海湾盆地黄河口凹陷东洼断裂体系发育特征及其变形过程的构造物理模拟[J]. 地球科学, 2021, 46(7): 2391-2402. DOI: 10.3799/dqkx.2020.189 |
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| 作者姓名： | 杨海风 吕丁友 孙永河 赵野 张志强 赵梦 |
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| 作者单位： | 中海石油(中国)有限公司天津分公司,天津 300459;东北石油大学地球科学学院,黑龙江大庆 163318 |
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| 基金项目： | “十三五”国家科技重大专项2016ZX05024-003黑龙江省优秀青年人才支持项目140119002龙江学者青年学者支持计划项目Q201803 |
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| 摘 要： | 黄河口凹陷东洼是渤海盆地典型的盆缘洼陷,基于新一轮区域三维地震精细解释资料,采用构造解析与构造物理模拟技术相结合的方式,对黄河口凹陷东洼的断裂体系特征与构造演化过程进行研究.研究表明,受走滑和伸展变形的共同作用,研究了发育了以NNE-NE走向为主的走滑断裂体系和以EW-NEE走向为主的伸展断裂体系,断裂构造演化经历了孔...
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| 关 键 词： | 走滑-伸展断裂体系 断裂分区 构造物理模拟 构造演化阶段 黄河口凹陷东洼 构造地质 |
| 收稿时间： | 2020-07-02 |
The Fault System and Its Tectonophysics Simulation in the Eastern Huanghekou Sag in Bohai Bay Basin |
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| Yang Haifeng,Lü Dingyou,Sun Yonghe,Zhao Ye,Zhang Zhiqiang,Zhao Meng. The Fault System and Its Tectonophysics Simulation in the Eastern Huanghekou Sag in Bohai Bay Basin[J]. Earth Science-Journal of China University of Geosciences, 2021, 46(7): 2391-2402. DOI: 10.3799/dqkx.2020.189 |
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| Authors: | Yang Haifeng Lü Dingyou Sun Yonghe Zhao Ye Zhang Zhiqiang Zhao Meng |
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| Abstract: | The eastern Huanghekou Sag was a typical hydrocarbon-rich sag in Bohai Bay Basin. The fault system of the sag were studied based on new 3D seismic interpretation. A combination of structure interpretation and tectonophisics simulation were applied to reconstruct the tectonic evolution. The results showed that controlled by strike slip and extensional stress, the studied area developed NNE-NE strike slip fault system and EW-NEE extensional fault system, experiencing four stages: the Ek-Es4 (the Kongdian Formation: The 4th member of the Shahejie Formation) initial extension-twist rifting stage, the Es3 (the 3rd member of the Shahejie Formation) strike slip extension rifting stage, the Es1-2-Ed (the 1st and 2nd member of the Shahejie Formation-the Dongying Formation) strike slip stage, and the Ng-Nm (the Guantao Formation-the Minghuazhen Formation) extension twisting stage. The major strike slip fault developed by activating the NE extensional faults formed during the initial stage. The major extensional fault developed on the basis of SN extensional stress during the strike slip extension rifting stage. During the strike slip stage, extension weakened, the faults of all directions activated due to SN extensional stress and showed strike slip-extension complex deformation. During the extension-twisting stage, some of the earlier major faults activated and in the meanwhile, many new secondary faults formed in Neogene. |
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