东非鲁武马盆地陆坡深水沉积特征及主控因素

发布时间：2018-01-03 02:29

  本文关键词：东非鲁武马盆地陆坡深水沉积特征及主控因素　出处：《海洋地质与第四纪地质》2016年03期 　论文类型：期刊论文

  更多相关文章： 深水沉积类型 深水沉积主控因素 深水沉积模式 鲁武马盆地

【摘要】：东非鲁武马盆地陆坡深水区发育了挤压冲断带和伸展断陷两种类型的构造,这种特殊构造背景下的深水沉积特征尚无研究报道。利用高分辨率三维地震资料,详细描述了鲁武马盆地陆坡第四系深水沉积特征,并探讨其主控因素。结果表明,鲁武马盆地陆坡深水区主要发育5种深水沉积类型:陆坡峡谷-水道充填沉积、正断层改造的朵体、沉积物波、海底滑坡和等深流沉积。深水沉积主要受构造活动和地形地貌控制,西部挤压剥蚀区主要发育带状的峡谷-水道体系、丘状的等深流漂积体以及波状的沉积物波,东部拉张沉积区主要发育海底滑坡沉积及深水朵体。
[Abstract]:There are two types of structures in the deep water area on the continental slope of the Luwu Ma Basin in East Africa, which are compressional thrust zone and extensional fault depression. The characteristics of deep-water sediments in this special tectonic background have not been reported. The high-resolution three-dimensional seismic data are used. The characteristics of the Quaternary deep-water sediments on the continental slope of the Luwu Ma Basin are described in detail, and the main controlling factors are discussed. There are five types of deep-water sediments in the deep water area on the continental slope of the Luwu Ma Basin: the filling deposits of the canyons and waterways on the continental slopes, the retrofitting of the normal faults and the sediment waves. Deepwater sediments are mainly controlled by tectonic activities and topography and landforms, and zonal canyon-waterway systems are mainly developed in the western compressional denudation area. In the eastern extensional sedimentary area, submarine landslide deposits and deep water sprouts are mainly developed in the hilly isdepth drift bodies and wave-like sediment waves.
【作者单位】： 中国石油杭州地质研究院;中国石油勘探开发研究院;
【基金】：中国石油天然气集团公司科学研究与技术开发项目(2014D-0908)
【分类号】：P618.13;P736.21
【正文快照】： 深水油气勘探已有近三十年的历史,前人针对全球不同地区的深水沉积已开展了大量研究工作,综合深水沉积露头、地下测井资料和高品质地震资料,识别多种深水沉积类型,并结合水槽实验和数值模拟,建立了不同深水沉积类型的沉积模式[1-4]。利用高分辨率三维地震数据,对海洋深水盆地，

本文编号：1371987