沉积学报2011，Vol.29Issue(4)：704-711,8.
鄂西地区茅口组重力流沉积特征及古地理意义
Gravity Flow Sedimentary Characteristics and Environmental Significance in Maokou Formation,Western Hubei Area
摘要
Abstract
By use of strata study on the field outcrops and microfacies analysis indoor,types of gravity-flow deposits have been found in Maokou Formation Middle Permian,western Hubei province,which developed in carbonate slope depositional environment,from top to bottom slump deposits,debris flow deposits,particle flow deposits have been regonized,slump deposits developed in the Cili Jiang Ya section,Hunan province,particle flow and debris flow developed in the Ziqiu section Changyang country.Slump sediments is composed of the clutter angular-subangular calcirudite,poor sorting,grain-supported,short-range slump slided off from the platform margin;debris flow deposits formed of the calcirudite,gravel limestone,bioclastic micritic limestone,gravel is slightly alignment and sub-angular,sub rounded,gravel gradually reduced from bottom to top;particle flow is composed of the gravel limestone sediments,wackstone with miliolids,which developed 2 to 3 cycles and graded layer and wavy bedding.Gravity flow deposits in the study area controlled by the tectonic evolution,the characteristics of its spatial and temporal distribution of the area in the middle Permian is consistent with platform-basin deposition pattern,and it has certain significance for the Permian sedimentary evolution in the study area.关键词
重力流沉积/沉积演化/茅口组/鄂西地区Key words
gravity flow deposits/sedimentary evolution/Maokou Formation/western Hubei分类
天文与地球科学引用本文复制引用
万秋,李双应,王松,孔为伦..鄂西地区茅口组重力流沉积特征及古地理意义[J].沉积学报,2011,29(4):704-711,8.基金项目
中国石化总公司海相前瞻性课题《中上扬子及邻区古生代古沉积环境演化研究》生物地质与环境地质教育部重点实验室课题 （）
国家自然科学基金项目 （）
安徽省基金（070415205）联合资助 （）
