应用粒度成因单元划分高分辨率层序地层基准面旋回

Application of Grain-size Genetic Unit to the Division of Baselevel Cycles in High-resolution Isochronous Sequence

在Goodwin和Anderson于1985提出的PAC假说基础上,针对目前基准面旋回级别划分较为混乱的状况,将基准面旋回赋予了自旋回和异旋回的涵义,探索性地提出了粒度成因单元的概念和研究方法,并将其应用到柴窝堡盆地中二叠统芦草沟组高分辨率层序地层的研究中,建立了该区中二叠统芦草沟组高分辨率层序地层格架,划分出了2个长期基准面旋回6个中期粒度成因单元以及和体系域相似的5个层段。

On the basis of the hypothesis of PAC which was presented by Goodwin and Anderson in 1985, considering the division of base-level cycles was extremely indefinite, this paper attached the autocyclicity and allocyclicity to the concepts of base-level cycle. The concept of the grain-size genetic unit and its research methods were put forward, and applied to establish high-resolution isochronous sequence framework of Loucaogou Formation of Middle Permian in Chaiwopu basin. There totally 2 long base-level cycle sequence, 6 middle-term grain-size genetic units, 5 members which similar to 5 system tracts , were distinguished from Loucaogou Formation of Middle Permian in Chaiwopu basin.