塔里木盆地非构造圈闭特征

塔里木盆地非构造圈闭十分发育。有与不整合有关的起覆圈闭和削截圈闭;有与古隆起有关的潜山圈闭;有与河流、三角洲、滨浅湖等沉积作用有关的岩性圈闭。这些非构造圈闭的形成主控于古构造格局,主要分布于古隆起及古斜坡地带。海西期、印支-燕山期是塔里木盆地非构造同闭的主要形成期,构成以古隆起-潜山-岩性为主体的圈闭系列。

CHARACTERISTICS OF NON-STRUCTURAL TRAPS IN TARIM BASIN

Non-structural traps are well developed in Tarim Basin and the types are various. The traps include: overlap traps and cut-blocking traps relating to unconformity;buried-hill traps relating to paleo-uplift; lithologic traps relating to the sedimentation of river, delta and shallow lake. The formation of the non-stractural traps was controlled by paleostructural framework. The traps formed primarily in the Hercynian, Indo-China and Yenshan Periods and were distributed in paleouplift and paleoslope belts,thus constituting a paleouplift-buried hill-lithologic trap series.