1引言印度洋中部长波长基底波状构造不仅是最大的而且也是最简单的大洋板内岩石圈规模的活动生长变形。这些构造形成年代晚，呈空间上间断的简单形态。本文评述了解释这些构造形成的各种可能机制，论证了这些构造是由不同于弹性板块纵弯精皱过程的塑性岩石圈褶皱作用形成。因而 1 INTRODUCTION The Indian Ocean central longwave basement wavy structure is not only the largest but also the easiest active growth deformation on a lithosphere scale within the oceanic plate. These formations formed in a late-generation, spatially discontinuous simple form. This paper reviews various possible mechanisms for explaining the formation of these structures and demonstrates that these structures are formed by the plastic lithospheric folds that are different from the bending and wrinkling of the flexural plates. thus