浙江白垩—第三纪孢粉组合及其古植被、古气候

浙江中新生代盆地计有40多个,大部分为断陷盆地,盆地内白垩-第三系厚达数千米。近年来,我们配合浙江的石油勘探,重点对长河盆地、金衢盆地、宁波盆地等白垩-第三纪地层进行了较系统的孢粉研究,共分析了78口钻井的2026块样品,获得了相当丰富的孢粉化石,为浙江白垩-第三纪地层、古植被、古气候研究提供了科学依据。徐金荣、杨再林、叶志华、吴妮分析样品,王秀雅、何福英清绘插图,在此表示感谢。一、孢粉组合序列浙江白垩-第三系孢粉自上而下可分为7个组合 1.Classopollis-Cicatricosispori-

DISCOVERY OF PEDIASTRUM ASSEMBLAGE FROM SUBMARINE PEAT BED IN EAST CHINA SEA AND ITS IMPLICATION IN SEA LEVEL CHANGE OF THE LATEST PLEISTOCENE

A submarine peat bed has been found in several places of the continental shelf of the East China Sea in the overall marine geological research of the past few years. In addition to fossil sporo-pollens, Pediastrum has been found in the peat bed. Fossil Pediastrum was first recorded by Davis (1916) in Green River Shale,