广西上二叠统层序地层格架

Sequence Stratigraphy of Upper Permian in Guangxi

在详细研究广西上二叠统碳酸盐岩、硅质岩和陆源碎屑岩沉积体系的基础上,通过高分辨等时地层界面的追踪和层序地层对比,建立了不同相区沉积体系在等时地层格架内的空间配置.进而识别出1个二级层序和5个三级层序.每个层序的形成都同时受到全球海平面升降、盆地基底沉降、沉积物充填的控制,在层序发展的不同阶段,受控的主导因素有别,从而形成不同样式的层序构成.

Based on the detailed study of depositional systems in carbonates, siliceous rocks as well as terrigenous sediments and high resolution isotime surfaces, the stacking patterns of depositional systems in different petrographic regions are established for the Upper Permian of Guangxi. And the one second-order and five third-order sequences, have been recognized. Each of the sequences results from the eustatic change of sea level, basinal subsidence and terrigenous influx. However, the critical factors vary in the development of sequences, leading to the differenation of sequence architecture.