石油学报 ›› 2016, Vol. 37 ›› Issue (4): 474-482.DOI: 10.7623/syxb201604006

• 地质勘探 • 上一篇    下一篇

南海边缘海构造旋回对沉积充填的控制——以礼乐盆地新生代沉积为例

王一博, 张功成, 赵志刚, 谢晓军, 刘世翔, 管红, 董伟, 宋双   

  1. 中海油研究总院 北京 100028
  • 收稿日期:2015-09-30 修回日期:2016-03-12 出版日期:2016-04-25 发布日期:2016-05-06
  • 通讯作者: 王一博,女,1978年11月生,2001年获大庆石油学院学士学位,2008年获中国石油大学(北京)博士学位,现为中海油研究总院地质工程师,主要从事石油地质研究工作。Email:wangyb5@cnooc.com.cn
  • 作者简介:王一博,女,1978年11月生,2001年获大庆石油学院学士学位,2008年获中国石油大学(北京)博士学位,现为中海油研究总院地质工程师,主要从事石油地质研究工作。Email:wangyb5@cnooc.com.cn
  • 基金资助:

    国家重大科技专项(2008ZX05025,2011ZX05025)、国家自然科学基金重大研究计划项目(No.91528303)和中海石油(中国)有限公司科技项目"南海新生代盆地构造沉积演化及资源潜力分析"资助。

The control for tectonic cycle of marginal sea on sedimentary fill in South China Sea:a case study of Cenozoic sediment in Lile Basin

Wang Yibo, Zhang Gongcheng, Zhao Zhigang, Xie Xiaojun, Liu Shixiang, Guan Hong, Dong Wei, Song Shuang   

  1. CNOOC Research Institute, Beijing 100028, China
  • Received:2015-09-30 Revised:2016-03-12 Online:2016-04-25 Published:2016-05-06

摘要:

礼乐盆地是在南海边缘海构造旋回控制下形成的沉积盆地,受古南海消亡与新南海扩张影响,盆地自晚白垩世以来经历了晚白垩世-早渐新世漂移前、晚渐新世-中中新世漂移和晚中新世-现今漂移后共3期区域演化阶段。古新世-早渐新世,礼乐盆地以滨浅海沉积为主,主要发育三角洲-扇三角洲-水下扇-盆底扇-滨海-浅海沉积体系;晚渐新世-中中新世,沉积物源供给缺乏,以滨浅海和半深海沉积为主,盆地北部发育大型碳酸盐台地;晚中新世以来,沉积物源主要来自盆地东南侧及内部火山,发育水下扇-浅海-半深海-碳酸盐台地沉积体系,以浅海和半深海沉积为主。礼乐盆地具有相对较好的烃源岩、有利的储集相带和良好的区域盖层,油气资源勘探潜力较大。

关键词: 边缘海构造旋回, 礼乐盆地, 新生代, 区域演化, 沉积充填

Abstract:

Lile Basin is a sedimentary basin formed under the control of the tectonic cycle of marginal sea in South China Sea. Influenced by the disappearance of Paleo-South China Sea and the expansion of New South China Sea, Lile Basin has undergone three regional evolution since the Late Cretaceous, i.e., the stage prior to Late Cretaceous-Early Oligocene drifting, the Late Oligocene-Middle Miocene drifting stage, and the stage posterior to Late Miocene-current drifting stage. In the Paleocene-Early Oligocene, Lile Basin was dominated by littoral-neritic sediments, where the delta-fan delta-submarine fan-basin floor fan-littoral-neritic sedimentary system was mainly developed. In the Late Oligocene-Middle Miocene, due to lack of sediment provenance, Lile Basin was dominated by littoral-neritic and bathyal sediments, where a large-scale carbonate platform was developed in the northern basin. Since the Late Miocene, sedimentary provenances were mainly sourced from the southeastern basin and internal volcanoes, where the submarine fan-neritic-bathyal-carbonate platform sedimentary system was developed and mainly made up of neritic-bathyal sediments. Lile Basin has relatively good source rocks, favorable reservoir facies belts and regional caps, indicating a huge hydrocarbon resource potential.

Key words: tectonic cycle of marginal sea, Lile Basin, Cenozoic, regional evolution, sedimentary filling

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