灰岩及白云岩中的风暴作用新标志

本文报道并详细论证了华北地区广泛分布的石炭二叠纪灰岩及奥陶纪白云岩中发现的风暴作用新标志,包括瘤块状灰岩、灰岩及白云岩丘凹状层面构造、丘凹状层面构造上的灰岩——泥岩对偶层,并对公认的风暴作用标志(介壳层)补充了一些新的特征。在论证中采用了生物碎屑定量统计、灰岩酸不溶残渣分析、模拟水槽试验等方法。

New characteristics for storm processes identification in limestones and dolomites

In this paper, it is reported for the first time and proved in detail that the new-discovered characteristics of storm processes, which were widespread in the Permo-Carboniferous limestones and the Ordovician dolomites in North China, include the tumorous limestones, the hummockyform strctures on the bedding plane of lime stones and dolomites, the limestone-shale couple on the hummockyform structures and some other new characteristics are added to the generally-accepted once of storm processes the shell bed on the hummockyform structures. In the course of demonstration, the methods such as quantitative statistics of different bioclasts, the acid-unsolvable residue analysis of limestones and the simulated experiments in the water flute were used.