摘要
详细叙述东海陆架西南部台北坳陷古近纪不同凹陷区各时期孢粉植物群展布情况。区内古近纪孢粉植物群可分为早古新世、晚古新世、早始新世和中始新世 4个发育阶段 ,早古新世孢粉植物群仅见于坳陷西南的局部地区 ,称Abietineaepollenities/Cedripites Parcisporites Momipitesleffingwellii组合 ,晚古新世孢粉植物群分 4种类型 ,椒江凹陷称Taxodiaceaepollenites Engelhardtioidites Momipitesleffingwellii组合 ,丽水 福州凹陷称Taxodi aceaepollenites Myricaceoipollenites Momipitesleffingwellii组合 ,闽江凹陷南部称Taxodiaceaepollenites Momipitesleffingwellii组合 ,闽江凹陷北部称Lygodiumsporites Cicatricosisporitesdorogensis Tiliaepollenites Bombacacidites组合。早始新世孢粉植物群具南北差异 ,北部以海金沙科和椴科孢粉植物发育为特征 ,南部以海金沙科、椴科和杨海科孢粉植物群发育为特征 ,以上均指示为湿热的亚热带气候。中始新世本区孢粉植物群比较一致 ,称Cicatricosis poritesdorogensis Ephedripites (D) Nitrariadites组合 ,指示为受到干旱气候影响的亚热带气候。区内缺失渐新统 ,故无渐新世孢粉记录。
The Taibei Depression, located at the southwestern continent shelf of the East China Sea, is a Cenozoic depression developed with marine and continental facies interactive sediments. It is made up of 4 tectonically sub-units: the Jiaojiang, the Mingjiang, the Lishui and the Fuzhou sags. The Paleogene chronostratigraphic skeleton referred in this paper is mainly based on marine microfossil zones, especially those of calcareous nannofossils. Based on palynofossil records from 13 drilling wells in the Taibei Depression, 4 palynofloral evolutionary stages are proposed in the present paper. The vertical and lateral changes of palynofloras during each stage are described below. The palaeovegetation and palaeoclimate are also inferred.
出处
《古生物学报》
CAS
CSCD
北大核心
2003年第2期223-238,共16页
Acta Palaeontologica Sinica
基金
现代古生物学和地层学国家重点实验室资助课题 ( 993111)。
