单岩性米级旋回在旋回地层划分中识别——以北京西山张夏组为例SINGLE-LITHOLOGY METER-SCALE CYCLES IN CYCLIC STRATIGRAPHY:A CASE STUDY OF THE CAMBRIAN CHANGHIA FORMATION IN XISHAN,BEIJING
杨俊才,马飞宙
摘要(Abstract)：
通过对传统米级旋回成因的讨论,提出了在传统的四种米级旋回之间存在米级旋回的过渡类型,即单岩性米级旋回的观点,并从米级旋回的成因及层序—岩相古地理方面对单岩性米级旋回的形成模式进行了分析,在野外露头对北京西山张夏组碳酸盐岩进行了旋回地层划分,就沉积间断面不易识别的旋回地层进行了讨论,并识别出了单岩性米级旋回。层序—岩相古地理背景下的米级旋回模式,可对米级旋回的平面展布进行预测;单岩性米级旋回的发现,有利于提高三级旋回层序识别及划分的精度。
关键词(KeyWords)： 旋回地层;层序地层学;单岩性米级旋回;成因模型;张夏组;寒武系;西山;北京
基金项目(Foundation): 中石化华北地台烃源岩分布及两大裂谷系盆地研究项目资助
作者(Author): 杨俊才,马飞宙
DOI: 10.19839/j.cnki.dcxzz.2014.03.007
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