重庆合川自流井组植物化石的发现  

Discovery of fossil plants from the Ziliujing Formation in Hechuan of Chongqing

作　　者：李旭兵[1] 孟繁松[1] 

机构地区：[1]宜昌地质矿产研究所,湖北宜昌443003

出　　处：《华南地质与矿产》2003年第3期60-65,共6页Geology and Mineral Resources of South China

基　　金：中国地调查局"中国古大陆环境变化及其年代;生物;层序;事件;化学和构造地层响应"项目(200113900072).

摘　　要：描述了发现于合川自流井组东岳庙段的三种似木贼植物化石,即EquisetitesfilusHarris,E.lateralis(Phillips)和E.columnaris(Brongn.)Phillips。标本保存良好,依据植物和双壳类化石的分布关系,提出自流井组东岳庙段的时代为早侏罗世晚期至中侏罗世早期。同时,分析了东岳庙段的岩相特征和沉积环境。Three species of the fossil plants,Equisetites filus Harris,E.lateralis (Phillips) and E.columnaris ( Brongn.) Phillips,are described in the paper.They were found from the Dongyuemiao Member of the Ziliujing Formation in Hechuan of Chongqing area and preserved faultlessly.According to distributing relations of fossil plants and bivalves,it is proposed that the Dongyuemiao Member should be later Early Jurassic to early Middle Jurassic in age.In addition,characteristics of lithofacies and sedimentary environments have also be analyzed.

关 键 词：植物化石 东岳庙段 早侏罗世晚期 中侏罗世早期 沉积环境 重庆合川 

分 类 号：Q914.86[天文地球—古生物学与地层学] P534.52[生物学—古生物学]