摘要
通过对山东兖州煤田太原组类动物群的系统研究,共鉴定出类化石12属103种及部分未定种。根据类化石在地层中的分布和垂向变化规律,自上而下建立一个带三个亚带:Schwagerina带:3)Triticitesparvus-Quasifusulinalongissima亚带,2)Schwagerinagregaria-Boultoniawillsi亚带,1)Quasifusulinapseudocayeuxi-Rugosofusulinavalida亚带。通过与邻区及华北部分地区对比,本区太原组类动物群的地质时代为早二叠世早期,本区石炭-二叠系界线应置于太原组第十一层灰岩之底。
By a systematic study of the fusulinid fauna in the Taiyuan Formation from the Yanzhou coalfield, Shandong Province, 12 genera and 105 species of fusulinids have been found. According to the geographical distribution and vertical variation of fusulinids in the strata, 1 assemblage and 3 subassemblages may be distinguished as follows （in descending order）： Schwagerina assemblage, 3） Triticites parvus-Ouasifusulina longissirna subassemblage, 2） Schwagerina gregaria-Boultonia willsi subassemblage, 1） Quasi fusulina pseudocayeuxi - Rugoso fusulina valida subassemblage. Compared with those in nearby regions and some other areas in North China, the geological age of the Yanzhou coalfield should be early Early Permian, and the boundary between the Carboniferous and Permian in the Yanzhou coalfield should be placed at the bottom of No. 11 limestone in the lower portion of the Taiyuan Formation.
出处
《微体古生物学报》
CSCD
北大核心
2005年第4期400-411,共12页
Acta Micropalaeontologica Sinica
基金
国家自然科学基金资助项目(No.49872057)。
关键词
[竹蜓]类动物群
太原组
下二叠统
石炭-二叠系界线
兖州煤田
山东
Fusulinida fauna, Taiyuan Formation, Lower Permian, Carboniferous-Permian boundary, Yanzhou coalfield, Shandong Province
