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古地理学报 ›› 2025, Vol. 27 ›› Issue (6): 1485-1499. doi: 10.7605/gdlxb.2025.087

• 岩相古地理及沉积学 • 上一篇    下一篇

鄂尔多斯盆地长城系分布规律及其与燕辽地区长城系对比*

刘刚1(), 陈亮2(), 任军峰1, 白海峰2, 季汉成3,4, 陈发清3,4   

  1. 1 中国石油天然气股份有限公司长庆油田分公司勘探开发研究院, 陕西西安 710018
    2 中国石油大学(北京)理学院, 北京 102249
    3 中国石油大学(北京)地球科学学院, 北京 102249
    4 油气资源与工程全国重点实验室, 中国石油大学(北京), 北京 102249
  • 收稿日期:2024-12-06 修回日期:2025-04-22 出版日期:2025-12-01 发布日期:2025-11-25
  • 通讯作者: 陈亮,男,1987年生,博士,副教授,主要从事沉积学研究。E-mail: georabbit1987@hotmail.com
  • 作者简介:

    刘刚,男,1983年生,工程师,主要研究方向为石油与天然气地质勘探。E-mail:

  • 基金资助:
    *中国石油大学(北京)科研基金(2462023BJR011); 中石油科技创新基金(2021D002-0102); 中国石油长庆油田分公司科研项目(2023DJ0104); 中国石油长庆油田分公司科研项目(2023YQX10105)

Distribution patterns of the Changcheng System in Ordos Basin and their comparison with Yanliao region

LIU Gang1(), CHEN Liang2(), REN Junfeng1, BAI Haifeng2, JI Hancheng3,4, CHEN Faqing3,4   

  1. 1 Exploration and Development Research Institute, Changqing Oilfield Company,PetroChina, Xi’an 710018, China
    2 College of Science, China University of Petroleum(Beijing), Beijing 102249, China
    3 College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China
    4 State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum(Beijing), Beijing 102249, China
  • Received:2024-12-06 Revised:2025-04-22 Online:2025-12-01 Published:2025-11-25
  • Contact: CHEN Liang,born in 1987,is a Ph.D. and an associate professor. He is mainly engaged in sedimentology research. E-mail: georabbit1987@hotmail.com.
  • About author:

    LIU Gang,born in 1983,is an engineer. He is mainly engaged in petroleum and natural gas geological exploration.E-mail: .

  • Supported by:
    Co-funded by Science Foundation of China University of Petroleum(Beijing)(2462023BJR011); CNPC Innovation Fund(2021D002-0102); Research Project of PetroChina Changqing Oilfield Company(2023DJ0104); Research Project of PetroChina Changqing Oilfield Company(2023YQX10105)

摘要: 鄂尔多斯盆地中—新元古代受裂谷活动影响,在汝阳、鄂尔多斯及燕辽地区分别沉积长城系熊耳群和常州沟组—大红峪组,尽管前人已建立统一地层框架,但受早期复杂裂谷作用影响,区域间地层对比及内部演化规律仍存争议。通过测—录井、区域二维地震反射剖面、岩性以及年龄测试数据,对比了鄂尔多斯地区长城系内部地层关系。结果表明,中元古代的裂陷活动在汝阳地区熊耳盆地于1800 Ma开始,鄂尔多斯地区裂陷活动在其西南缘华亭地区最早开始(结束时间>1759 Ma),时间与熊耳盆地大致相当,之后裂陷活动逐渐向东迁移; 熊耳群沉积之后,裂陷活动在鄂尔多斯地区停止进入拗陷期,沉积了汝阳群白草坪组,而熊耳盆地的裂陷活动与沉积中心向东北方向迁移; 至北大尖组沉积时期,燕辽裂谷形成,开始在燕辽地区沉积常州沟组,而鄂尔多斯地区长城系沉积范围达到最广; 之后,在鄂尔多斯地区存在短期的沉积间断,在地震反射剖面中可见不整合界面; 在崔庄组与洛峪口组沉积时期开始广泛海退,沉积范围减小。结合年代地层学与地层沉积中心的演化情况,认为华北板块的地层演化受裂陷活动影响,整体上存在由华北板块南缘向太行山地区—燕辽地区的迁移过程。

关键词: 地层格架, 裂陷演化, 长城系, 燕辽地区, 鄂尔多斯盆地

Abstract:

During the Meso- to Neoproterozoic,the Ordos Basin was influenced by rifting activities,leading to the deposition of the Changcheng System’s Xiong'er Group in the Ruyang and Ordos regions,and the Changzhougou to Dahongyu Formations in the Yanliao area. Although previous studies established a unified stratigraphic framework,regional stratigraphic correlations and internal evolutionary patterns remain debated due to early complex rifting. By integrating logging and coring data,regional 2D seismic reflection profiles,lithological analyses,and geochronological tests,this study clarifies the internal stratigraphic correlations of the Changcheng System in the Ordos Basin. Results show that Mesoproterozoic rifting in the Ruyang region’s Xiong'er Basin initiated at~1800 Ma,while rifting in the Ordos Basin’s southwestern Huating area began slightly later(>1759 Ma),with subsequent eastward migration of tectonic activity. After Xiong'er Group deposition,rifting ceased in the Ordos Basin,transitioning to a subsidence phase marked by the Baiyucao Formation of the Ruyang Group,whereas the Xiong'er Basin’s rifting center shifted northeastward. During Beidajian Formation deposition,the Yanliao Rift formed,initiating Changzhougou Formation sedimentation in Yanliao,while the Ordos Basin’s Changcheng System reached its maximum extent. A brief depositional hiatus,evidenced by an unconformity in seismic profiles,followed in the Ordos Basin. Widespread regression occurred during Cuizhuang and Luoyukou Formation deposition,reducing sedimentary coverage. Integrated chronostratigraphic and depositional center analyses suggest that the North China Craton’s stratigraphic evolution,driven by rifting,migrated southward from the craton’s southern margin toward the Taihang-Yanliao regions.

Key words: stratigraphic framework, rift evolution, Changcheng System, Yanliao region, Ordos Basin

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