中南大学学报（自然科学版）2017，Vol.48Issue(1)：239-246,8.DOI:10.11817/j.issn.1672-7207.2017.01.032
水体环境对成化湖盆沉积物分布的定量控制:以渤南洼陷沙四上亚段为例
Quantitative controls in water environment to distribution of sediments in saline lacustrine basin: a case of Es41 in Bonan sag
摘要
Abstract
Though clastic rock,carbonate,sulfate and chloride co-exist in saline lacustrine basin,the mechanism that multiple types of sediments are distributed orderly is not clear.Bonan sag is a saline lacustrine basin in the sedimentary period of Es41.Through quantized characterization of the paleosalinity arid palaeobathymetric,distribution law of multiple types of sediments was studied.The control pattern about stratified water was established in saline lacustrine basin eventually.The results show that the coupling of paleosalinity and palaeobathymetric jointly controls the distribution of chemical sedimentary rock,and the distribution of carbonate and sulfate is divided by an oblique line coupled by paleosalinity and palaeobathymetric.The distribution area of carbonate is above this line and sulfate is mainly developed below it.With the increase of the palaeobathymetric,the chloride deposites in deep water.Water depth has effect on distribution of different types of carbonate and clastic rock.The water depth of 15 m is the dividing line between biogenic carbonate and chemical carbonate,and sand beach bar is also developed above it.Beside this,the water depth of 30 m is the dividing line between fan delta and near-shore subaqueous fan.The control pattern about stratified water has reference to verifying sedimentary phenomenon and predict sedimentary body.关键词
水体分异/咸化湖盆/沉积分布/定量控制/渤南洼陷Key words
delamination of water body/saline lacustrine basin/sedimentary distribution/quantitative control/Bonan sag分类
天文与地球科学引用本文复制引用
刘雅利,刘鹏..水体环境对成化湖盆沉积物分布的定量控制:以渤南洼陷沙四上亚段为例[J].中南大学学报（自然科学版）,2017,48(1):239-246,8.基金项目
国家重大专项资助项目(2011ZX05006) (Project(2011ZX05006) supported by the Important National Science and Technology Specific Project) （2011ZX05006）
