南盘江盆地中三叠统复理石韵律的马尔科夫链特征及其地质意义

本文利用南盘江盆地中三叠统复理石韵律的野外测量数据,从马尔柯夫链原理出发,对其进行了频数转移矩阵、概率转移矩阵、极限概率矩阵和环流矩阵等沉积旋回最优分解综合分析.分析过程中发现并命名了循环链和二级循环链,并对循环链进行了特殊处理.通过分析模拟获得的状态循环模式图,建立了不同地点实测段的代表性韵律结构模式并绘制了韵律结构...

Markov Chain Simulation on the Rhythmic Sequences of Middle Triassic Flysch in Nanpanjing Basin, SW China

The authors of this paper processed the rhythmic sequence data of the Middle Triassic Flysch attained in the field in the Nanpanjiang Basin, southwest of China. The Markov chain simulation method is mainly used to create transition probability matrices, limit probability matrices and circulation matrices. The authors found and named the cyclic chain and the secondary cyclic chain and gave a solution for these cyclic chains. Based on the simulation, 20 cycle models with sketch profile diagrams of rock type units for the flysch rhythmic sequences are given, being correlated respectively to the outcrop sections of flysch strata measured in the Nanpanjiang area. The authors analyzed the relationship between the rhythmic models derived from the simulation and the sedimentary environments in different locations of the Nanpanjiang Basin during the Middle Triassic. The rhythmic models show that north parts (e.g. Bianyang and Lanmu) of the basin belonged to littoral areas with tidal facies while the southern parts (such as Tianlin and Xilin) were the basin axis with strong event deposits of turbidities. All the facies distribution model shows that Nanpanjiang Basin was a remnant basin during the Middle Triassic.