东濮凹陷碎屑岩沉积充填特征及变化对构造活动的响应
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摘要
东濮凹陷为渤海湾盆地西南端的一陆相断陷湖盆,具有砂层薄、粒度细和非均质性显著的沉积特征。盆地在古近系的沉积演化受频繁构造活动影响显著。通过研究古近系沙河街组碎屑岩尤其是盆缘的砾岩特征,分析不同构造变革期沉积物组成类型特征及变化,明确不同时期沉积充填对断裂活动的响应:盆地形成初期兰聊断裂的活动,东西两侧物源类型差异小,组成相对单一,均以中生界碎屑岩为主;随着构造活动频发和流域面积的增加,在沙三下文西、卫西、观城、马寨、马厂和三春集等断裂活动,湖盆水体加深,并出现多个沉降中心,东西两侧沉积体系和物源组成发生变化,砾石成分显示西侧物源中上古生界碎屑岩和下古生界碳酸盐岩、中生界火山岩和太古界基底变质岩逐渐增加,东侧上古生界物质比例增加;沙三中长垣断层和黄河断层活动造成南北差异显著,出现多源混合,砾石成分复杂度最高;至沙二期北部文东、卫东、文明寨等断层活动,东部洼陷沉降幅度增加,东侧近源物质大量充填砾石成分以上古生界碎屑岩和下古生界碳酸盐岩为主。沉积物的变化直接反映了各时期构造活动的强弱记录了盆地的演化历史,对认识同沉积断裂活动影响下储层砂体的发育及烃源岩的展布具有重要意义。
Dongpu sag is a continental faulted lake basin in the southwest of Bohai Bay basin. The sedimentary evolution of the basin in the Paleogene is significantly affected by frequent tectonic activities. The ancient Shahejie formation conglomerate characteristics of clastic rock,especially the basin edge was studied,and the characteristic of the different tectonic transformation time of sediment type change was analyzed,the sedimentary response of faulting in different periods was cleared. Basin formed Lanliao fracture activity,small things on both sides of the content source type difference,form is relatively single,give priority to with Mesozoic clastic rock; With the increase of frequent tectonic activity and the basin area,Wenxi,Guancheng,Mazhai,Machang and Sanchunji fault activities in the Shasanxia,such as lake basin water deepened,and multiple settlement center,things on both sides of the change of sedimentary system and material sources,gravel composition displayed on the provenance of clastic rocks,upper palaeozoic carbonate rocks and lower palaeozoic era,the Mesozoic volcanic rocks and the archean erathem basement metamorphic rocks increases gradually,on the east side of material proportion,upper palaeozoic increases; The activities of the placanticline fault and the Yellow River fault in the middle of Shasan resulted in significant north-south differences,multi-source mixing and the highest complexity of gravel composition. Due to the fault activities in the northern part of the second Shahe period,such as Wendong,Weidong and Wenmingzhai,the subsidence range of the eastern sag increased,and the Paleozoic clastic rocks and lower Paleozoic carbonate rocks above the gravel composition of the near-source materials in the east side were mainly Paleozoic clastic rocks and lower Paleozoic carbonate rocks. The change of sediments directly reflects the strength of tectonic activities in each period,and records the evolution history of the basin,which is of great significance for understanding the development of reservoir sand bodies and the distribution of hydrocarbon source rocks under the influence of synsedimentary fault activities.
Dongpu sag is a continental faulted lake basin in the southwest of Bohai Bay basin. The sedimentary evolution of the basin in the Paleogene is significantly affected by frequent tectonic activities. The ancient Shahejie formation conglomerate characteristics of clastic rock,especially the basin edge was studied,and the characteristic of the different tectonic transformation time of sediment type change was analyzed,the sedimentary response of faulting in different periods was cleared. Basin formed Lanliao fracture activity,small things on both sides of the content source type difference,form is relatively single,give priority to with Mesozoic clastic rock; With the increase of frequent tectonic activity and the basin area,Wenxi,Guancheng,Mazhai,Machang and Sanchunji fault activities in the Shasanxia,such as lake basin water deepened,and multiple settlement center,things on both sides of the change of sedimentary system and material sources,gravel composition displayed on the provenance of clastic rocks,upper palaeozoic carbonate rocks and lower palaeozoic era,the Mesozoic volcanic rocks and the archean erathem basement metamorphic rocks increases gradually,on the east side of material proportion,upper palaeozoic increases; The activities of the placanticline fault and the Yellow River fault in the middle of Shasan resulted in significant north-south differences,multi-source mixing and the highest complexity of gravel composition. Due to the fault activities in the northern part of the second Shahe period,such as Wendong,Weidong and Wenmingzhai,the subsidence range of the eastern sag increased,and the Paleozoic clastic rocks and lower Paleozoic carbonate rocks above the gravel composition of the near-source materials in the east side were mainly Paleozoic clastic rocks and lower Paleozoic carbonate rocks. The change of sediments directly reflects the strength of tectonic activities in each period,and records the evolution history of the basin,which is of great significance for understanding the development of reservoir sand bodies and the distribution of hydrocarbon source rocks under the influence of synsedimentary fault activities.
引文
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15 齐仁理，陈开远．歧口凹陷沙南低凸起的幕式构造活动及对沉积过程的控制[J]．科学技术与工程，2015,15(9):68-75Qi Renli,Chen Kaiyuan. The tectonic movement of Shanan low salient and its influence to sedimentary process in the north Qikou depression of Bohai Bay Basin[J]. Science Technology and Engineering,2015,15(9):68-75
2 程剑波，邹雨，周瑞．山西宁武-静乐盆地侏罗系砂岩碎屑组分及物源分析[J]．科学技术与工程，2018,18(6):31-38Cheng Jianbo,Zou Yu,Zhou Rui. Characteristic and provenance analysis of Jurassic sandstone in Ningwu-Jingle Basin[J]. Science Technology and Engineering,2018,18(6):31-38
3 王建强，贾楠，刘池洋，等．鄂尔多斯盆地西南部下白垩统宜君组砾岩砾组分析其意义[J]．沉积学报，2011,29(2):226-234Wang Jianqiang,Jia Nan,Liu Chiyang,et al. Fabric analysis of Yijun Gravels of Lower Cretaceous in the southwestern Ordos Basin[J].Acta Sedimentologica Sinica,2011,29(2):226-234
4 钱程，韩建恩，余佳，等．山西榆社盆地新近系马会组砾岩层砾组特征及其地质意义[J]．现代地质，2011,25(4):778-788Qian Cheng,Han Jianen,Yu Jia,et al. Gravel fabric characteristics of the Neocene Mahui formation in Yushe basin,Shanxi and its geological significance[J]. Geoscience,2011,25(4):778-788
5 雷涛，唐文斌，徐胜林，等．川北地区千佛崖组物源及岩相古地理特征[J]．科学技术与工程，2015,15(16):149-155Lei Tao,Tang Wenbin,Xu Shenglin,et al. Provenance and lithofacies paleogeographic characteristics of Qianfoya formation in northern Sichuan Basin[J]. Science Technology and Engineering,2015,15(16):149-155
6 漆家福，王德仁，陈书平，等．兰聊断层的几何学、运动学特征对东濮凹陷构造样式的影响[J]．石油与天然气地质，2006,27(4):451-459Qi Jiafu,Wang Deren,Chen Shuping,et al. Impact of geometry and kinematics of Lanliao fault on structural styles in Dongpu sag[J]. Oil&Gas Geology,2006,27(4):451-459
7 周安朝．华北地块北缘晚古生代盆地演化及盆山耦合关系[M]．北京:煤炭工业出版社，2002Zhou Anchao. Late paleozoic basin evolution in northern margin of north China and the coupling relationship between the basin and themauntain[J]. Beijing:Coal Industry Press,2002
8 周立宏，李三忠，刘建忠，等．渤海湾盆地区燕山期构造特征与原型盆地[J]．地球物理学进展，2003,18(4):692-699Zhou Lihong,Li Sanzhong,Liu Jianzhong,et al. The Yanshanian structural style and basin prototypes of the mesozoic Bohai Bay basin[J]. Progress in Geophysics,2003,18(4):692-699
9 纪友亮，冯建辉，王声朗，等．东濮凹陷古近系沙河街组沙三段沉积期湖岸线的变化及岩相古地理特征[J]．古地理学报，2005,7(2):145-156Ji Youliang,Feng Jianhui,Wang Shenglang,et al. Shifting of lake shoreline and lithofacies palaeogeographic characters during sedimentary period of the member 3 of Shahejie formation of Paleogene in Dongpu sag[J]. Journal of Palaeogeography,2005,7(2):145-156
10 蒋飞虎，张洪安，靳亚勤，等．东濮凹陷古近系沉积体系与砂体分布研究:2017KT01[R]．濮阳:中原油田，2017Jiang Feihu,Zhang Hong'an,Jin Yaqin,et al. Study on paleogene sedimentary system and sand body distribution in Dongpu depression:2017KT01[R]. Puyang:Zhongyuan Oilfield,2017
11 王琳霖，王振奇，李强，等．断陷湖盆细粒沉积区砂体分布控制因素[J]．科学技术与工程，2016,16(10):17-22Wang Linlin,Wang Zhenqi,Li Qiang,et al. Controlling factors of sandbody distribution on the fine-grained sedimentary area in lacustrine fault basins[J]. Science Technology and Engineering,2016,16(10):17-22
12 赵红格，刘池洋．物源分析方法及研究进展[J]．沉积学报，2003,21(3):409-415Zhao Hongge,Liu Chiyang. Approaches and prospects of provenance analysis[J]. Acta Sedimentologica Sinica,2003,21(3):409-415
13 杨仁超，李进步，樊爱萍，等．陆源沉积岩物源分析研究进展与发展趋势[J]．沉积学报，2013,31(1):99-107Yang Renchao,Li Jinbu,Fan Aiping,et al. Research progress and development tendency of provenance analysis on terrigenous sedimentary rocks[J]. Acta Sedimentologica Sinica,2013,31(1):99-107
14 陈书平，漆家福，王德仁，等．东濮凹陷断裂系统及变换构造[J]．石油学报，2007,28(1):43-49Chen Shuping,Qi Jiafu,Wang Deren,et al. Fault systems and transfer structures in Dongpu sag[J]. Acta Petrolei Sinica,2007,28(1):43-49
15 齐仁理，陈开远．歧口凹陷沙南低凸起的幕式构造活动及对沉积过程的控制[J]．科学技术与工程，2015,15(9):68-75Qi Renli,Chen Kaiyuan. The tectonic movement of Shanan low salient and its influence to sedimentary process in the north Qikou depression of Bohai Bay Basin[J]. Science Technology and Engineering,2015,15(9):68-75
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