摘要
通过对米级旋回成因的讨论,提出了用米级旋回单元厚度比值法进行旋回层序识别和层序划分的方案。在对北京西山张夏组米级旋回详细识别的基础上,采用米级旋回单元厚度法进行了层序划分,划分结果与露头层序地层学的划分结果基本一致。米级旋回单元厚度比值法操作简单,使用方便,结果比较准确,有利于提高三级旋回层序识别及划分的精度,是一种行之有效的层序划分方法。
In this paper we discuss the origin of meter-scale cycles and explore the application of meterscale cyclic unit thickness ratios in cyclostratigraphic and sequende stratigraphic subduvision.A detailed cyclostratigraphic analysis of the Cambrian Changhsia Formation in Xishan of Beijing,using meter-scale cycle unit thickness ratios as a cyclostratigraphic tool,shows that the cyclostratigraphic division is consistent with outcrop sequence stratigraphy.Meter-scale cyclic unit thickness ratios are early to measure and can give accurate results.The method is effective in the analysis of third-order cyclostratigraphic units and sequence stratigraphic studies.
出处
《地层学杂志》
CSCD
北大核心
2017年第4期445-449,共5页
Journal of Stratigraphy
基金
中石化华北地台烃源岩分布及两大裂谷系盆地研究项目
关键词
层序地层
米级旋回
单岩性米级旋回
厚度比值
旋回层序
张夏组
寒武系
西山
北京
sequence stratigraphy
meter-scale cycle
single lithological meter-scale cycle
thickness ratio
cyclic sequence
Changhsia Fm.
Cambrian
Xishan
Beijing
