遗迹学研究现状及其在层序地层学中的应用潜力

简要回顾了遗迹学发展历史和当前国内外研究的最新进展,根据遗迹化石在沉积环境解释方面的特殊作用,对遗迹化石在层序地层学中的应用作了剖析,初步认为遗迹学研究在以下五个方面具应用潜力 :1.旋回层序的确定和分析;2.层序界面的认别及成因解释;3.凝缩层分析;4.相序分析;5.海 (湖 )岸带的确定等。

Advances in Ichnology and Its Potential for Sequence Stratigraphy

The devlopment history of ichnology and its current advances are briefly reviewed in this paper,and the measurement of ichnofabric indices is introduced.It is agreed that the ichnological suites and their variation could reflect changes in substrate consistency,physical environmental energy,sedimentation rate, bottom current,oxygen content,water chemistry and water depth, all these are consistent with both phases and magnitudes of the associated sea-level cycles.Based on the analysis above,it has been pointed out that the ichnofossils are sensitive to paleoenvironmental changes as a result of sea level dynamics,the potential of ichnology for the sequence stratigaphy could be indicated by at least the following five aspects:1.determination and analysis of cyclic sequences;2.recognition and interpreation of sequence stratigaphic boundaries;3.analysis of condensed section;4.facies succession analysis;5.definition of marine or lacustrine shore zones.