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桑园营子露头剖面具有同沉积断层控制的近源、粗粒、陡坡型浅水扇三角洲体系的沉积特征。根据 Markov过程的基本原理 ,认识到桑园营子剖面出露完整的扇三角洲前缘沉积组合( C — C 旋回 )各岩性相之间的转移具有 Markov性质 ,利用转移概率矩阵法及差值矩阵法对该沉积组合进行 Markov链模拟 ,得出了理想的垂向沉积层序模式图。该模式图与实际地层层序吻合较好 ,反映了各岩性相的空间展布特征 ,建立了沉积环境的演化序列。
Sedimentary Characteristics of Triassic System of Near Source, Coarse Grains and Steep Shallow Shallow Fans Controlled by Synsedimentary Faults in Sanyuanyingzi Outcrop Section. According to the basic principle of Markov process, it is recognized that the transition between various lithologic facies in the complete fan delta frontal depositional assemblage (C - C cycle) of the Sangyuanyingzi profile has the Markov property. The transition probability matrix method and the difference Matrix method Markov chain simulation of the sedimentary assemblage, the ideal vertical sedimentary sequence pattern diagram. The model map is in good agreement with the actual stratigraphic sequence, reflecting the spatial distribution characteristics of lithologic facies and establishing the evolutionary sequence of sedimentary environment.