论塔里木盆地构造反转的周期性

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。

/ PERIODITY OF INVERSION TECTONICS IN TARIM BASIN

The periodicities for the typical wells in Tarim basin are analyzed with the wave analysis method. The period of 100Ma can be observed obviously. Since Cambrian, there have been four complete periods, and each of them is composed of half period of positive phase and negative phase. Tertiary was the positive phase of the fifth period. A good correspondent relationship between the period and tectonic evolution stage of the basin were discovered, which was shown by that the positive phases belonged to extensional tectonic regime, and negative phases belonged to compressional tectonic regime. The formation of the period inversion relied on the subduction of old Tianshan ocean, old Kunlun ocean and Tertis ocean, and also relied on movement of mentel plume. The mentel plume stopped changing with the change of tectonic regime and period.