安徽贵池地区二叠系孤峰组露头层序地层  

CHARACTERISTICS OF OUTCROP SEQUENCE STRATIGRAPHY OF THE PERMIAN GUFENG FORMATION IN THE GUICHI AREA, ANHUI

作　　者：许卫[1] 岳书仓[2] 杜建国[1] 杜森官[1] 孙乘云[1] 

机构地区：[1]安徽省地质调查院,安徽合肥230001 [2]合肥工业大学,安徽合肥230009

出　　处：《地层学杂志》2004年第2期137-141,147,共6页Journal of Stratigraphy

基　　金：国土资源大调查项目1/25万<安庆幅>(编号:200113000009)资助

摘　　要：依据实测地层剖面的详细研究,将二叠系孤峰组分为四个三级层序,每个三级层序跨时平均约1.25Ma,其高频变化表现为:海侵体系域的粒序变化主要表现为下粗上细的正粒序组构特征,总体表现为自下而上沉积水体由浅变深的退积型旋回;高位体系域的粒序变化主要表现为下粗上细的正粒序组构特征,总体表现为自下而上沉积水体由深变浅的进积型旋回。The Permian Gufeng Formation strata in the Guichi area of Anhui Province may be divided into 4 third order sequence,and each may be about 1.75Ma,usually having TST,CS and HST,but same se- quence no CS,the high-frequency sequences in the study area are of two types:the normal grading succes- sion being coarse in grain size below and fine above in HST,and the retrograding sequence of being from shallow to deep in water depth; the inverse grading succession being coarse in grain below and fine above in TST,and the prograding sequence being from deep to shallow.

关 键 词：层序地层 三级层序 孤峰组 二叠系 贵池地区 安徽 

分 类 号：P534.46[天文地球—古生物学与地层学]