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运用沉积盆地波动分析方法,对塔里木盆地典型井的构造周期波进行了分析。塔里木盆地在其地质历史时期100Ma的周期是很明显的,自寒武纪以来共经历了4个完整的周期,每一完整周期都由正相位和负相位两个半周期所组成,而第三纪为第5个周期的正相位阶段。研究发现,该周期与盆地构造演化阶段有较好的对应关系,表现在周期正相位为伸展构造体制,周期负相位为挤压构造体制。塔里木盆地发生周期性构造反转,与古天山洋、古昆仑洋及特提斯洋的俯冲、地幔羽的活动及不同地块、不同时期的拼贴而导致的地幔羽“休眠”状态紧密相关。
Using the sedimentary basin fluctuation analysis method, the tectonic periodic waves of the typical wells in Tarim Basin are analyzed. The Tarim Basin has obvious periods of 100Ma during its geological history and has undergone 4 complete cycles since the Cambrian. Each complete cycle consists of two half cycles of positive phase and negative phase, while the third Ji is the positive phase of the 5th cycle. The study shows that this period has a good correspondence with the tectonic evolution stage of the basin, showing that the periodic positive phase is an extensional tectonic regime and the periodic negative phase is a squeezed tectonic regime. The periodic tectonic inversion occurs in the Tarim Basin, which is closely related to the “dormancy” state of mantle plumes caused by subduction and mantle plume activity of the ancient Tianshan Ocean, the ancient Kunlun Ocean and the Tethys Ocean and the collage at different periods and periods .