四川盆地拉张-挤压构造环境探讨

从全球构造着眼，动态地从时间－空间四维阐述了拉－挤压构造动力学环境的辩证关系，指出了不同构造动力学环境对应不同的构造变形系统。结合四川盆地地质演化历程，从9个方面论证了四川盆地自其形成以来，构造动力学环境曾经历了早期拉张、中期过渡、晚期挤压的过程，相应地在对四川盆地进行构造分析时，要注意早期伸展构造、中期反转构造、晚期挤压构造的识别和综合研究。

Studies of Extension-compression Tectonic Dynamic Setting in Sichuan Basin

Viewing from the global tectonics,the authors dynamically described the dialectical relationships between extensions and compressions in time-special 4-D,and pointed out the different tectonic deformation systems corresponding to different tectonic dynamical environments.Considering the geological evolution of Sichuan Basin,from nine aspects,the authors proved that the tectonic dynamical environments of Sichuan Basin,after its formation,has experienced the early extension,middle transition and late compression environments.Correspondingly,as the paper suggests,a considerable attention need to be paid to the comprehensive studies of the early extensional structures、middle inversion structures and the late compression structures of Sichuan Basin when analyzing its tectonics.