论文部分内容阅读
本文对广西武鸣晚二迭世地层进行了划分和对比,确立了上、下二迭统及下三迭统与上二迭统之间的分界线,并将晚二迭世早期合山组划分为下、中、上三个段。 文中论证了桂中地区上、下二迭统间普遍为假整合接触,而武鸣的府城——覃李区为连续沉积。硅质岩段为晚二迭世地层,属合山组下段,砾屑灰岩为晚二迭世晚期长兴组地层。生物灰岩段与其上伏的含煤段之间普遍存在的假整合关系,是合山组内部的沉积小间断,而不是上、下二迭统之间长期侵蚀的间断。
This paper divides and contrasts the Late Permian strata in Wuming, Guangxi, establishes the dividing line between Upper and Lower Permian, Lower Triassic and Upper Permian, Divided into the next, middle and last three paragraphs. The paper argues that the upper and lower Permian in the central and lower parts of the region are generally fake and integrated contacts, while the wucheng district - Qinli District is a continuous deposition. The siliceous rocks are Late Permian strata, belonging to the lower part of the Heshan Formation, and the gravelly limestone is the Changxing Formation late in the Late Permian. The prevalent pseudo- integration relationship between biogenic limestone and its underlying coal-bearing segments is a small discontinuity within the Heshan Formation, rather than a discontinuity of long-term erosion between Upper and Lower Permian.