CAJ | 학술논문

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-Momipites leffingwellii组合,晚古新世孢粉植物群分4种类型,椒江凹陷称Taxodiaceaepollenites-Engelhardtioidites-Momipites leffingwellii组合,丽水-福州凹陷称Taxodiaceaepollenites-Myricaceoipollenites-Momipites leffingwellii组合,闽江凹陷南部称Taxodiaceaepollenites-Momipites leffingwellii组合,闽江凹陷北部称Lygodiumsporites-Cicatricosisporites dorogensis-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Cicatricosisporites dorogensis-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.
상세서술동해륙가서남부태북요함고근기불동요함구각시기포분식물군전포정황.구내고근기포분식물군가분위조고신세、만고신세、조시신세화중시신세4개발육계단,조고신세포분식물군부견우요함서남적국부지구,칭Abietineaepollenities/Cedripites-Parcisporites-Momipites leffingwellii조합,만고신세포분식물군분4충류형,초강요함칭Taxodiaceaepollenites-Engelhardtioidites-Momipites leffingwellii조합,려수-복주요함칭Taxodiaceaepollenites-Myricaceoipollenites-Momipites leffingwellii조합,민강요함남부칭Taxodiaceaepollenites-Momipites leffingwellii조합,민강요함북부칭Lygodiumsporites-Cicatricosisporites dorogensis-Tiliaepollenites-Bombacacidites조합.조시신세포분식물군구남북차이,북부이해금사과화단과포분식물발육위특정,남부이해금사과、단과화양해과포분식물군발육위특정,이상균지시위습열적아열대기후.중시신세본구포분식물군비교일치,칭Cicatricosisporites dorogensis-Ephedripites (D)-Nitrariadites조합,지시위수도간한기후영향적아열대기후.구내결실점신통,고무점신세포분기록.
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.