上扬子区在加里东运动过程中形成前陆盆地，主要经历了三次挤压、挠曲沉降至松驰、抬升过程。
The tectonic subsidence is the main controlling factor in the foreland basin, which went through three periods, namely press, flexure subsidence to laxitas, uplift.
中生代构造快速沉降的沉积体的楔形展布表明盆地具有前陆岩石圈挠曲成因特征；
The Mesozoic rapid tectonic subsidence and wedge shaped sedimentary bodies indicate the origin of lithospheric flexure in the Chuxiong Basin.
由此，提出了A区带动力层序由前陆挠曲变形体系域(FST)和前陆塑性变形体系域(VST)组成。
It follows that the dynamic sequences in Zone a are made up of the flexural deformation systems tract (FST) and viscoelastic deformation systems tract (VST).
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