【摘要】 叙述了ZK0 4孔第四纪地层的岩石地层、生物地层、磁性地层的划分。岩石地层有更新世海门组、启东组、昆山组、湖组和全新世如东组 ;生物地层划分了 10个孢粉组合带、2个有孔虫组合、2个介形虫组合 ;磁性地层划分了 2个极性世 ,其中布伦赫斯正极性世出现了 3次反极性事件即拉尚事件、布莱克事件和吉曼卡事件。对年代地层进行了详细讨论。更多还原

【Abstract】 The division of rock stratigraphy, biostratigraphy and magnetostratigraphy of Quaternary Period in drilling hole ZK04 was described in the paper. Rock stratigraphy includes Haimen Fm.,Qidong Fm., Kunshan Fm., Gehu Fm. of Pleistocene Epoch and Rudong Fm. of Holocene Epoch; Biostratigraphy divides ten sporopollen assemblage zones, two foraminifera assemblages, two Ostracoda assemblages; magnetostratigraphy divides two polarity epoches, in which, Brunhes positive polarity epoch happened three times of polarity reversed events,i.e. Larson Event, Bleiberg Event and Gimanca Event. Chronostratigraphy is discussed in details in the paper. [WT5HZ]更多还原