冲绳海槽D－086孔颗石藻化石及其古海洋学意义的初步探讨  

THE PRIMARY STUDY ON CALCAREOUS NANNOFOSSILS FOR PALEO-OCEANOGRAPHY IN D-086 CORE OF THE OKINAWA TROUGH

作　　者：苍树溪[1] 钟石兰[1] 薛胜吉[1] 

机构地区：[1]中国科学院海洋研究所

出　　处：《海洋地质与第四纪地质》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

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.

关 键 词：冲绳海槽 古海洋学 颗石藻 化石 

分 类 号：P736.22[天文地球—海洋地质]