新疆准噶尔盆地南缘祁家沟组有孔虫化石及其地层意义

THE FORAMINIFERA OF QIJIAGOU FOMATION FROM SOUTHERN MARGIN OF JUNGGAR BASIN AND ITS SIGNIFICANCE IN STRATIGRAPHY

朱荣 林甲兴

Zhu Rong Lin Jiaxing

石油工业部新疆石油勘探开发研究院 2. 常州博物馆

Xinjiang Research Institute of Petroleum Exploration and Development, Ministry of Petroleum Industry 2. Changzhou Museum

本文首次报导了准噶尔盆地祁家沟组有孔虫的发现及其分布,并将其划分为上、下部两个有孔虫组合,并与国内外同期地层进行了广泛对比,确定该区时代属晚石炭世早期。

There are plenty of foraminiferas(both fusulina and non-fusulina)in Upper Carboniferous Qijiagou Formation from the southern margin of Junggar Basin in Xinjiang Province,and the common ones are Palaeotextularidae Te-trataxidae,Endothridae and Fusulinidae,which can be divided into two assemblages based on the study of non-fusulina foraminifera in this paper.1.The low part of Tolypammina fortis-Palaeospiroplectammina cons-pecta assemblage;2.The upper part of Bradyina coninna-Plectogyra minuta assemblage.The age of the assemblages in the formation may be attributed to early stage of Late Carboniferous and the assemblages can be compared with those of the same stage in other regions both at home and abroad.

https://doi.org/10.11781/sysydz198704321