塔里木盆地一级演化周期的识别及其意义

应用沉积盆地波动过程分析方法对塔里木盆地塔北隆起、北部坳陷和中央隆起３０余口井所作研究结果表明，塔里木盆地自震旦纪以来经历了震旦纪、寒武纪—中泥盆世、晚泥盆世—侏罗纪和白垩纪—现今四个一级周期沉积波动的演化历程。它们持续的时间分别为２３０，２０３，２２１４，１４５６Ｍａ，其中白垩纪至今盆地演化过程大致经历了一个完整周期的３／４。每一个演化周期对应于一个大的盆地演化阶段，并对应于一个大的成藏旋回。

IDENTIFICATION OF THE FIRST ORDER EVOLUTIONARY CYCLES OF TARIM BASIN AND ITS SIGNIFICANCE

By using the analysis method of wave processes in sedimentary basin, the sectional evolutions of more than 30 wells in the Tabei uplift, the North depression and the Central uplift of the Tarim basin were studied. The results reveal that there are four first order cycles for the Tarim basin since the Sinian, i.e.Sinian, Cambrian middle Devonian, late Devonian Jurassic and Cretaceous Present. The durations of them are 230Ma, 203Ma, 221.4Ma and 145.6Ma respectively. The process from Cretaceous to Present passed only 3/4 of a complete cycle. Each of the above cycles corresponds not only to the stages of the basin evolution but also to the reservoir formation cycle.