摘要
本文通过对冲绳海槽Ｄ－０８６孔颗石藻化石的研究，自下而上划分出三个颗石藻化石组合：Ｇｅｐｈｙｒｏｃａｐｓａａｐｅｒｔａ－Ｇ．ｏｃｅａｎｉｃａ组合，Ｇｅｐｈｙｒｏ－ｃａｐｓａｅｒｉｃｓｏｎｉｉ－Ｃｏｃｃｏｌｉｔｈｕｓｃｒａｓｓｉｐｏｎｓ组合，Ｅｍｉｌｉａｎｉａｈｕｘｌｅｙｉ－Ｇｅｐｈｙｒｏｃａｐｓａｏ－ｃｅａｎｉｃａ组合；划分出Ｅ．ｈｕｘｌｅｙｉ带和Ｅ．ｈｕｘｌｅｙｉ高峰带的界线；每一个颗石藻化石组合代表一个气候期，它们分别与标准气候期的玉木亚间冰期，晚玉木冰期和冰后期相当。
Calcareous nannofossils for the primary study are taken from D-086 core in the Oki-nawa Trough.There are three assemblages recognized,from bottom to top of the core,i.e.,Cephyrocapsa aperta-G.oceanica;Gephyrocapsa ericsonii-Cocclithus crassipons and E-miliania huxleyi-Gephyrocapsa oceanica. The age of stratigraphy,and the boundary be-tweed E.huxleyi zone and the peak zone of E.huxleyi,were discussed.Each of the threeassemblages represents a climatic period,corresponding to Wurm subinterglacial,the latelast glacial and post glacial(Holocene)respectively.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1994年第3期85-90,共6页
Marine Geology & Quaternary Geology
基金
国家"八五"攻关项目
国家自然科学基金
关键词
冲绳海槽
古海洋学
颗石藻
化石
Okinawa Trough calcareous nannofossil paleo-oceanography1)From Nanjing Institute of Geology and Paleontology,Academia Sinica,Nanjing,210008,China.
