中国石油大学学报（自然科学版）2016，Vol.40Issue(5)：10-21,12.DOI:10.3969/j.issn.1673-5005.2016.05.002
东营凹陷东部始新世三角洲供给型重力流沉积特征与模式
Sedimentary characteristics and model of delta-fed turbidites in Eocene eastern Dongying Depression
摘要
Abstract
Based on lithofacies analysis, original interpretation and mapping of sedimentary facies and growth faults, the dom-inating sedimentary process and depositional model of delta-fed turbidites are studied for the Eocene Dongying Depression, Bohai Bay Basin. The results show that there are four deep-water sedimentary processes in the study area: slide, slump, debris flow and turbidity current, which can be further subdivided into nine deposition types. Slide and slump are generally restricted to the foot of delta front and the down-wall side of growing faults with strong activities, while debrites usually depos-it at low-lying areas with weak fault activity and far from foot of delta front. Transportation distance of gravity flow in the study area is short due to restriction by small-scale deep water area and local landform controlled by activities of fault, which lead to incomplete development of gravity flow from slide, slump to turbidity current. As a result, there is a possible lack of con-tinuous sandstone in gravity flow channels caused by"hydroplaning" of debris flows. These findings are helpful to understand sedimentary characteristics of turbidites fed by lacustrine delta, and have significant applications in prediction of turbidites sandstone reservoir.关键词
重力流/碎屑流/沉积特征/沉积模式/三角洲供给型浊积体系/东营凹陷Key words
gravity flow/debris flow/sedimentary characteristics/depositional model/turbidite system fed by delta/Dongy-ing Depression分类
能源科技引用本文复制引用
鲜本忠,王璐,刘建平,路智勇,李宇志,牛栓文,朱永飞,洪方浩..东营凹陷东部始新世三角洲供给型重力流沉积特征与模式[J].中国石油大学学报（自然科学版）,2016,40(5):10-21,12.基金项目
国家自然科学基金项目(41172104,41272133,41372117) （41172104,41272133,41372117）
国家油气重大专项(2011ZX05009-002,2011ZX05014-001) （2011ZX05009-002,2011ZX05014-001）
中国石油大学(北京)科研基金项目(KYJJ2012-01-06) （北京）
