广西平果地区二叠纪、早三叠世沉积体系研究

本文对平果地区二叠纪、早三叠世孤立碳酸盐台地沉积体系做了详细研究,将二叠纪古台地沉积相分为台地中心相、台地边缘相、斜坡-槽盆相。早三叠世分为碳酸盐台地相、碎屑岩槽盆相。它论述了各相的岩石学特征、古生物学特征,并对其成因进行了探讨。指出了平果古台地二叠纪、早三叠世各相带的展布,并对构造控制、沉积作用的一些问题进行了讨论。文中以系统论的观点总结了台地相与槽盆相的差别及各相之间的关系,建立了二叠纪至早三叠世平果台地沉积体系之演化模式。

STUDY OF PERMIAN TO LOWER TRIASSIC DEPOSITIONAL SYSTEMS IN PINGGUO AREA,GUANXI

Permian to lower Triassic isolated carbonate platform depositional systems in Pingguo area is studed in detail in this thesis. Permian sedimentary facies of Pingguo ancient carbonate platform can be divided into carbonate platform center facies; platform margin facies and platform slop-trough facies, and lower Triassic sedimentary facies can be divided into carbonate platform facies area and classic trough facies area. Petrological and paleobiological characteristics of these facies are described and the original of various scdiments is analysed.Some problems about their distribution,tectonic control and sedimentation are discussed.According to the viewpoint of system theory,the difference between platform facies and trough facies,and the influence among them are summerized,and their evolution model is found in this paper.