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The Apparent Types of Sequence Bottom Boundary Surface--Taking marine Sinian System to Middle Triassic Series in South China as an example
Author(s): 
Pages: 675-682
Year: Issue:  4
Journal: ACTA SEDIMENTOLOGICA SINICA

Keyword:  层序层序界面表现形式;
Abstract: 众所周知,在层序地层学研究中最关键的是层序划分,而层序划分的关键是有关界面的识别,可用于确定层序的界面包括层序的底界面,初始海泛面和最大海泛面,其中最为重要的是层序底界面的识别,这是层序划分的基础和前提.以中国南方海相震旦系-中三叠统为例,在大量野外剖面详细观测的基础上,识别出了层序底界面的物质表现形式有9种类型,它们分别是:①古风化壳,②渣状层,③河流回春作用面,④古喀斯特作用面,⑤斜坡重力流冲刷侵蚀面,⑥盆地内浊流侵蚀面,⑦火山事件作用面,⑧岩性、岩相转换面,⑨上超面.详细讨论了各类型界面的特征,这对于正确识别和划分层序具有重要的意义.
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