| 摘要: |
| 研究表明,黄河口凹陷沙河街组三段中亚段发育的沉积相类型有辫状河三角洲相、扇三角洲相、湖底扇相和湖泊相。同沉积断裂特征对沉积具有控制作用,陡坡带活动盆缘断裂控制扇三角洲的分布,缓坡带活动盆缘断裂控制辫状河三角洲分布;二级断裂对湖底扇和深水沉积区有明显的控制作用,东部断阶带中部发育的F20东西向同沉积断裂,控制了物源的主要注入通道——沟谷,对东部物源的注入具有长期影响。 |
| 关键词: 黄河口凹陷|沉积特征|同沉积断裂|二级断裂 |
| DOI： |
| 附件 |
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| 基金项目:国家自然科学重点基金“新构造运动对渤中巨型油气系统的控制”(40238059) |
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| Syndepositional fault controls on the distribution of sedimentary facies: An example from the sedimentary facies in the middle submember of the third member of the Shahejie Formation in the Huanghekou depression,Shandong |
| GUO Tao, XIN Ren-chen, LIU Hao, ZHOU Xin-huai |
(1. School of Marine, China University of Geosciences, Beijing, Beijing 100083, China;
2. Tianjin Branch, CNOOC, Tanggu 300452, Tianjin, China) |
| Abstract: |
| Sedimentary facies developed in the middle submember of the third member of the Shahejie Formation in the Huanghekou depression consist of the braided delta,fan delta,sublacustrine fan and lacustrine facies.The controls of the syndepositional faults are manifested in:(1) the controls of the active basin-margin faults in the steep slope zone on the distribution of the fan delta facies;(2) the controls of the active basin-margin faults in the ramp zone on the distribution of the braided delta facies;(3) the controls of the second-order faults on the sublacustrine fan facies and deep-water depositional areas,and(4) the controls of the F20 E-W trending syndepositional faults in the middle part of the eastern fault terraces on gullies and valleys as the main channels for sediment supply. |
| Key words: Huanghekou depression|deposition|syndepositional fault|second-order fault |
