摘要
通过对新疆塔里木盆地阿瓦提—巴楚地区11口探井123块石炭系孢粉样品的鉴定结果系统分析,建立了该区Rugosporaminuta-Verrucosisporitessimilis、Lycosporapusilla-Verrucosisporitesmicrotubercosus和Calamosporaliquida-Schopfipollenitesellipsoids孢粉组合3个,从而为该区石炭纪地层的划分对比提供了依据。该区早石炭世早期孢粉组合中石松植物的孢子占优势(约占总含量的80%),古蕨类植物和芦木植物的孢子含量次之,在个别样品中出现少量疑源类和虫颚化石。早石炭世晚期孢粉组合中三缝孢子占优势,并以鳞木植物的小孢子Lycospora含量很高为特征。晚石炭世孢粉组合中三缝孢子占有绝对的优势,鳞木植物的小孢子Lycospora的含量最高(占总含量的33.4%)。
Based on the analysis of 123 palynological samples from 11 test wells in the Awati-Bachu area of the Tarim Basin, three miospore assemblages of the Carboniferous age have been recognized, providing important palaeontological data for the biostratigraphical subdivision and correlation in this area. The early Early Carboniferous miospore assemblage is composed entirely of spores, dominated by those of Lycopsida dominated （up to 80%） with subordinate archaeopteridophyte and calamophyte spores. The late Early Carboniferous miospore assemblage is dominated by trilete spores, with abundant lepidophyte microspores of the genus Lycospora. The Late Carboniferous assemblage is principally predominated by trilete spores, with Lycospora accounting for up to 33.4% of the abundance.
出处
《地层学杂志》
CSCD
北大核心
2006年第4期341-346,共6页
Journal of Stratigraphy
基金
国家973项目(No.2001B209100)资助。
关键词
石炭纪
孢粉组合
阿瓦提-巴楚
新疆
Carboniferous, miospore assemblages, Awati--Bachu area, Xinjiang
