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吉林省磐石县杨木顶子石灰石矿床产于中石炭统磨磐山组地层中。该组主要由不同粒级的碎屑灰岩及页岩组成。碎屑灰岩按粒度大小及含量划分为:含砾屑砂屑灰岩、含砾屑砂屑粉屑灰岩、含砂屑粉屑灰岩和粉屑灰岩。不同粒度级别与化学组份有一定关系,其各层界线一般呈渐变过渡。单凭肉眼观察,难以确切地划分各层界线,又因不同地质人员对粒级及含量的多少认识不一,在岩性定名上往往因人而异。给地质资料的统一对比利用带来了困难。因此,应用马尔柯大链方法对地层沉积序列进行分析,了解不同粒度碎屑灰岩各层相互依存的规律,掌握其沉积韵律特征就显得必要了。
The Yangmutouzi limestone deposit in Panshi County of Jilin Province is produced in the Mopan Mountain formation of the Carboniferous. The group consists of clastic limestone and shale with different grain sizes. According to the size and content of clastic limestone, gravel-bearing ash-bearing limestone, gravel-bearing litter-bearing limestone, sandy-bearing litosestone and litterstone are classified. Different levels of granularity and chemical composition have a certain relationship, the boundaries of each layer is generally a gradual transition. Based on the naked eye observation alone, it is difficult to define the boundaries of each layer accurately. Because different geologists have different understandings on the grain size and content, the naming of lithology often varies from person to person. The unified use of geological data has brought difficulties. Therefore, it is necessary to analyze the sequence of sedimentary sequence using the Markov chain method to understand the interdependence of different layers of clastic limestone with different granularities and to grasp the sedimentary rhythm characteristics.