摘要
近些年来，随着沉积学的新理论和新概念越来越多地渗入到地层学领域，岩石地层学也有了很大的进展。本文旨在从地层的沉积作用入手，讨论了地层的结构类型、分类及其地层的有序性。地层的沉积作用由垂向加积和侧向加积形成，并细分为４种类型的旋回沉积作用。现代岩石地层学的基本内容包括：（１）岩石地层单位的建立或厘定，（２）地层的成因，（３）地层的时代；（４）地层格架（岩石地层格架、年代地展格架和生物地层格架）等．岩石地层单位的确立是岩石地层学研究的基础，是建立在对地层的五个基本属性深入研究的基础上的：（１）岩石学特征，（２）生物学特征；（３）结构特征；（４）厚度和体态；（５）接触关系（地层单位顶、底和内部接触关系）。
The last few years have seen considerable advances in lithostratigraphy as new theories and concepts of sedimentology were introduced into the stratigraphic field. In this paper,the stratigraphic architecture,classification and ordering are discussed on the basis of the analysis of sedimentation of the strata which are formed by vertical and lateral accumulation.The main contents of modern lithostratigraphy include:(1) the establishment of lithostratigraphic units ;(2)the genesis of strata ;(3)the geological ages of strata, and (4)the stratigraphic framework (lithostratigraphic,chronostratigraphic and biostratigraphic frameworks etc. )The establishment of lithostratigraphic units is the basis for lithostratigraphic research,and should be accomplished in terms of five basic characteristics: (1 )lithological,(2)biological, (3 )structural characteristics,(4)the thickness and shape,and (5 )the contact relations (between the top and bottom,and the interior of units).
基金
地矿部行业科学技术基金
关键词
地层组成
结构
体态
格架
有序性
stratigraphic composition
stratigraphic architecture
shape of stratigraphic units
stratigraphic framework
stratigraphic ordering
