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层序充填和层序发育受一系列相互作用地质变量的控制。提出了层序地层控制因素多变量系统的观点,指出该系统具有层序控制因素的多变性、不确定性和层序发育过程的复杂性特征。层序地层控制因素分为综合变量和独立变量,假设综合变量为独立变量,可以简化层序模拟,假设越多,模拟越简单,但模拟结果越粗略。目前研究层序控制因素的手段主要依靠计算机模拟技术、沉积充填物理模拟技术以及多场景技术。借助SEDPAK二维地层模拟软件,模拟了断层活动对层序展布的影响。
Sequence filling and sequence development are controlled by a series of interacting geological variables. The viewpoint of multivariable system of controlling factors of sequence stratigraphy is put forward. It is pointed out that the system has the characteristics of variability, uncertainty and complexity of sequence control. Sequence stratigraphic controlling factors are divided into comprehensive variables and independent variables. Assuming that the integrated variables are independent variables, the sequence simulation can be simplified. The more hypotheses, the easier the simulation, but the more rough the simulation results. At present, the means to study the sequence control factors rely mainly on computer simulation technology, physical simulation of depositional filling and multi-scene technology. Using SEDPAK 2D modeling software, the effect of fault activity on the distribution of sequences is simulated.