摘要
对北部湾盆地涠洲组和流沙港组的钻井所获的岩屑进行孢粉分析,以孢粉组合优势和特征分子为依据,划分出流沙港组4个孢粉组合,涠洲组3个组合8个亚组合。流沙港组时代属于始新世,以藻类为优势的孢粉组合属于晚始新世,涠洲组属于渐新世。始新统与渐新统的界线位于流沙港组与涠洲组之间。
We report the palynological assemblages of drill holes at Liushagang Formation and Weizhou Formation from Beibuwan Basin, South China Sea. Four palynologieal assemblages of Liushagang Formation, three palynological assemblages and eight sub-assemblages of Weizhou Formation were found based on the dominant assemblages partition and the diagnostic individual analysis. The established age of palynological assemblages of Liushagang Formation is in the Eocene, while the first interval dominated in algae in Liushagang Formation is in the Late Eocene. Meanwhile,the age of palynological assemblages of Weizhou Formation belongs to Oligocene. In Beibuwan Basin, the boundary of the Eocene and Oligocene boundary is between Liushagang Formation and Weizhou Formation.
出处
《古生物学报》
CAS
CSCD
北大核心
2012年第3期385-394,共10页
Acta Palaeontologica Sinica
基金
国家"11.5"重点科技攻关项目(2008ZX05023004)资助
关键词
孢粉组合
流沙港组
涠洲组
始新世
渐新世
北部湾盆地
南海
Palynological assemblages
Liushagang Formation
Weizhou Formation
Eocene
Oligocene
BeibuwanBasin
South China Sea
