论文部分内容阅读
本文概述了华南下石炭统建阶过程及前人对建阶的意见。重新研究了华南下石炭统—丰宁统建阶剖面,并对各组地层含义作了修订和补充。笔者认为华南下石炭统—丰宁统仍保持两个阶,即岩关阶和大塘阶。并建议建立六个生物地层单位,即岩关阶包括:1.Ceriphyllum elegantum组合带、2.Caninia dorlodoti组合带、3.Cystophrentis带、4.Pseudouralinia带;大塘阶包括:5.Thysanophlloides带、6.Yuanophyllum带。笔者认为湘中的邵东组目前建阶条件尚不成熟,暂可归入岩关阶底部;黔西的赵家山组并未发现有可靠的西欧纳缪尔阶分带菊石,如Homoceras、Eumorphoceras等,却含有大量Yuanophyllum动物群分子,可与西欧维宪阶上部Dibunophyllm带对比,而不能与西欧纳缪尔阶的E带和H带对比。
This paper gives an overview of the process of building the Lower Carboniferous in southern China and their predecessors’ views on building a new house. Re-studied the South China Carboniferous - Fengning U-step profile, and the meaning of each group made amendments and additions. The author believes that the Lower Carboniferous in South China - Fengning Tong still maintain two orders, that is, Guan Yu and Datang order. And suggests the establishment of six biostratigraphic units, namely, the lithofacies level: 1. Ceriphyllum elegantum, 2. Caninia dorlodoti, 3. Cystophrentis, 4. Pseudouralinia, and Datang order: 5. Thysanophlloides, 6 .Yuanophyllum band. The author believes that Shaodong Formation in the middle of Hunan Province is not yet mature and can be temporarily classified as the bottom part of the lithofacies. The Zhaojiashan Formation in Qianxi County has not found a reliable ammoniac in the Namur region of Western Europe such as Homoceras, Eumorphoceras , But contains a large number of Yuanophyllum fauna, which can be compared with the Dibunophyllm zone in the upper part of the Western Uygur Autonomous Region, but not with the E and H zones of the Namurian Western Europe.