地质学报2026，Vol.100Issue(8)：2932-2943,12.DOI:10.19762/j.cnki.dizhixuebao.2025060
江西省吉泰盆地梅2井白垩纪孢粉化石记录及古环境特征
Palynological records and paleoenvironmental characteristics of Cretaceous from well M2 in the Jitai basin,Jiangxi Province
摘要
Abstract
To determine the stratigraphic age and reconstruct the paleoenvironmental conditions of the 420～800 m interval of well M2 in the Gaopi-Meigang uplift area(southeastern Jitai basin),this study carried out a systematic palynological analysis.The results identify a palynological assemblage comprising Schizaeoisporites-Taxodiaceaepollenites-Classopollis-Exesipollenites.The age indicated by this assemblage ranges from the Albian(late Early Cretaceous)to the Cenomanian(early Late Cretaceous),corresponding to the Zhoutian Formation.Analysis of the types and relative abundances of palynological fossils indicates that the climate at that time was mainly tropical-subtropical and arid.However,transient humid phases or stable surface water recharge occurred frequently,leading to the development of wetland in low-lying parts of the basin.The vegetation was dominated by coniferous woody and herbaceous communities,with sporadic deciduous or evergreen broad-leaved trees and shrubs.关键词
吉泰盆地/孢粉记录/周田组/古气候古植被特征Key words
Jitai basin/palynological records/Zhoutian Formation/characteristics of paleoclimate and paleovegetation引用本文复制引用
颜开,王春连,陈仁义,王九一,刘殿鹤,尹传凯,孙珮婕..江西省吉泰盆地梅2井白垩纪孢粉化石记录及古环境特征[J].地质学报,2026,100(8):2932-2943,12.基金项目
本文为国家自然科学基金项目(编号42402111,U20A2092)、中国地质调查局地质调查项目(编号DD20230056,DD20190437,DD20190606)和中央级公益性科研院所基本科研业务费专项(编号KK2412,KK2005,KK2016)联合资助的成果. （编号42402111,U20A2092）
