本文關(guān)鍵詞：東非魯武馬盆地陸坡深水沉積特征及主控因素　出處：《海洋地質(zhì)與第四紀地質(zhì)》2016年03期 　論文類型：期刊論文

  更多相關(guān)文章： 深水沉積類型 深水沉積主控因素 深水沉積模式 魯武馬盆地

【摘要】：東非魯武馬盆地陸坡深水區(qū)發(fā)育了擠壓沖斷帶和伸展斷陷兩種類型的構(gòu)造,這種特殊構(gòu)造背景下的深水沉積特征尚無研究報道。利用高分辨率三維地震資料,詳細描述了魯武馬盆地陸坡第四系深水沉積特征,并探討其主控因素。結(jié)果表明,魯武馬盆地陸坡深水區(qū)主要發(fā)育5種深水沉積類型:陸坡峽谷-水道充填沉積、正斷層改造的朵體、沉積物波、海底滑坡和等深流沉積。深水沉積主要受構(gòu)造活動和地形地貌控制,西部擠壓剝蝕區(qū)主要發(fā)育帶狀的峽谷-水道體系、丘狀的等深流漂積體以及波狀的沉積物波,東部拉張沉積區(qū)主要發(fā)育海底滑坡沉積及深水朵體。
[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.
【作者單位】： 中國石油杭州地質(zhì)研究院;中國石油勘探開發(fā)研究院;
【基金】：中國石油天然氣集團公司科學研究與技術(shù)開發(fā)項目(2014D-0908)
【分類號】：P618.13;P736.21
【正文快照】： 深水油氣勘探已有近三十年的歷史,前人針對全球不同地區(qū)的深水沉積已開展了大量研究工作,綜合深水沉積露頭、地下測井資料和高品質(zhì)地震資料,識別多種深水沉積類型,并結(jié)合水槽實驗和數(shù)值模擬,建立了不同深水沉積類型的沉積模式[1-4]。利用高分辨率三維地震數(shù)據(jù),對海洋深水盆地，

本文編號：1371987