山东济宁煤田(东区)太原组小有孔虫生物地层  

ON THE FORAMINIFERAL BIOSTRATIGRAPHY IN THE TAIYUAN FORMATION OF JINING COALFIELD (EAST AREA), SHANDONG

作　　者：蒋汉朝[1] 王明镇[2] 张锡麒[2] 李增学[2] 

机构地区：[1]中国科学院地质与地球物理研究所新生代地质与环境研究室,北京100029 [2]山东科技大学地球科学系,山东泰安271019

出　　处：《地层学杂志》2001年第3期174-181,T001,T002,共10页Journal of Stratigraphy

基　　金：国家自然科学基金项目 (No.49872 0 5 7)资助

摘　　要：通过对山东济宁煤田 (东区 )太原组小有孔虫动物群的系统研究 ,共鉴定出小有孔虫化石 2 8属 15 5种。根据小有孔虫化石在地层中的分布和垂向的变化规律自上而下建立了 3个小有孔虫组合 : .Tetrataxis parviconi-ca- N odosaria longa- Geinitzina spandeli组合 , .Echinonodosaria echinata- Glomospira regularis组合 , .Bradyi-na sphaeroidea- Palaeotextularidae组合。通过与邻区及华北部分地区的对比 ,本区太原组小有孔虫动物群的地质时代应为早二叠世早期 ,本区石炭系Based on the study on the biostratigraphy and foraminifera fauna in the Taiyuan Formation of Jining coalfield (east area) in Shandong province, 28 genera and 155 species of foraminifera have been identified. According to the distribution and vertical variation of foraminifera fossils in the strata, the foraminifera may be distinguished in descending order into 3 assemblages:Ⅲ. Tetrataxis parviconica Nodosaria longa Geinitzina spandeli , Ⅱ . Echinonodosaria echinata Glomospira regularis , Ⅰ. Bradyina sphaeroidea Palaeotextulariae assemblages. Compared with those in nearby regions and some other areas in North China, the geological age of foraminifera fauna in the Taiyuan Formation of Jining coalfield should be the early Early Permian, so the Carboniferous Permian boundary in Jining coalfield (east area) should be placed at the base of No.11 limestone in the Taiyuan Formation.

关 键 词：小有孔虫动物群 太原组 石炭系 二叠系 山东 生物地层 

分 类 号：Q915.811.1[天文地球—古生物学与地层学]