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笔者在对华北地区中寒武统鲕滩碳酸盐建造露头层序地层学研究工作中首次识别出层序中最基本的地层单元——米级旋回层序,它是露头层序分析最基本的工作单元。本文总结概括出不同体系域内米级旋回层序类型和特征。这些米级旋回层序在垂向上叠加构成高级(五级、四级、三级)旋回层序时表现出周期性和规律性。这种不同级次的旋回层序的形成受不同动力成因引起的具不同周期和频率复合海平面变化的控制。米级旋回层序的识别与复合海平面变化的研究得出中寒武世鲕滩层序的形成经历了若干次周期性的淹没—间断—均衡堆积—加积进积事件,这为盆地充填史的恢复提供了新途径。
The author first identified the most basic stratigraphic unit in the study of carbonate outcrop sequence stratigraphy in the Middle Cambrian oolitic beach in North China - the Mi-level cycle sequence, which is the most basic sequence of outcrop sequence analysis Work unit. This paper summarizes the types and features of the Mi-scale cycles in different systems. These meters-level cycles show periodicity and regularity when vertically superimposed to form the advanced (five, four, three) cycles. The formation of these different levels of cycles is controlled by complex dynamic sea-level changes with different periods and frequencies. The study of the identification of the Mi-level cycles and the change of the composite sea level shows that the formation of the Middle Cambrian oolitic beach has undergone several cycles of submergence-discontinuity-equilibrium accumulation-sedimentary events, Recovery provides a new way.