甘肃省文县关家沟组微古植物化石的发现及地质意义  

Discovery and Its Geological Significance of Micropalaeoflora from Guanjiagou Group in Wenxian County,Gansu Province

作　　者：王瑶培[1] 王昀[1] 苏春乾[1] 

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054

出　　处：《地球科学与环境学报》2010年第1期40-43,共4页Journal of Earth Sciences and Environment

基　　金：陕西省地质矿产勘查项目(6100000620010)

摘　　要：通过对甘肃省文县关家沟组剖面的系统采样,获得大量微古植物化石,鉴定出16个属28个种。依据中国南方及其他地区南华系、震旦系资料,将本区关家沟组的微古植物化石组合特征与峡东、川西北等地区的晚南华世南沱期的微古植物化石组合进行对比,确认关家沟组地层时代为晚南华世南沱期。这一结果对研究关家沟组地层对比、时代划分提供了依据。By means of systematic sample along the Guanjiagou Formation section in Wenxian County, Gansu Province, many Micropalaeoflora fossils are collected, and identified as 16 genera and 28 species. According to the fossil assemblages of Nanhua System and Sinian in South China and other areas, the characteristics of fossil assemblages in Guanjiagou Formation section arc compared with that of Nantuo Period of Later Nanhua stage in the eastern of Three Gorges and the northwest of Sichuan, and the age of Guanjiagou Formation should belong to Nantuo Period of Later Nanhua stage. The result is significant to study the geological age and stratigraphic subdivision in Guanjiagou Formation.

关 键 词：微古植物 关家沟组 地质意义 文县 甘肃 

分 类 号：P534.1[天文地球—古生物学与地层学]