地质论评2016，Vol.62Issue(6)：1535-1550,16.DOI:10.16509/j.georeview.2016.06.013
四川龙门山地区早中泥盆世孢子化石研究
Lower and Middle Devonian Spore Assemblages from Longmen Mountains,Sichuan Province
摘要
Abstract
Objectives:The Devonian strata of Longmen Mountains in Sichuan Province are so well-developed that it is the ideal place for Devonian stratigraphy and biostratigraphy research.The present paper is dealing with miospores from Guixi,Muerchang,Guanyinmiao,Guanshanpo Formations of Lower Devonian and Jinbaoshi Formation of Middle Devonian in Longmen Mountains. Methods:From these formations 29 samples were collected and processed with standard palynological analysis, abundant but not well-preserved miospores were macerated more or less in 27 samples,while 2 samples were barren. Results:There are 81 species assigned into 41 genera having been recognized.Three assemblages have been proposed in ascending order,namely,Retusotriletes rotundus—Calamspora panucea(RP)assemblage from Guixi Formation and the lower part of Muerchang Formation,Synorisporites downtoensis—Verrucosisporites scurrus (DS ) assemblage from the upper part of Muerchang,Guanyinmiao and Guanshanpo Formations,Densosporites inaequus—Grandispora inculta(II)assemblage from Jinbaoshi Formation. Conclusions:After comparing with the relevant palynological zones of China,Europe,America and other areas,the RP assemblage is considered to belong to Lochkovian,the DS assemblage is from Pragian to early Emsian,and the II assemblage is from late—middle Eifelian to early Givetian.And,according to statistics of the size of spores,some comments on the evolution events of plants are also included in the paper.关键词
下泥盆统/中泥盆统/孢子组合/龙门山/四川Key words
Lower Devonian/Middle Devonian/spore assemblage/Longmen Mts./Sichuan引用本文复制引用
黄敏,朱怀诚,刘锋,彭辉平..四川龙门山地区早中泥盆世孢子化石研究[J].地质论评,2016,62(6):1535-1550,16.基金项目
本文为中国地质科学院基本科研业务费资助项目（编号YWF201608）和中国科学院南京地质与古生物研究所资助项目（编号421060105）的成果。AcknowledgementsThis work was financially supported by the Fundamental Research Funds of Chinese Academy of Geological Sciences （No．YWF201608） and the project of Nanjing Institute of Geology and Paleontology，Chinese Academy of Sciences（No．Y421060105）． （）
