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深海柱样地层的划分和古温度的研究,是深海地层学的重要研究课题之一。在国外,根据硅藻的丰度和优势种的分布进行地层学的研究已取得大量的成果,而利用结节园筛藻(Coscinodiscus nodulifer A.Schmidt)个体大小的规律性变化,结合同位素材料,则可做为古温度标志和地层划分对比的可靠依据。在国内,深海硅藻地层学的研究尚未见有报导。本文采用硅藻地层学的研究方法,根据硅藻的丰度(每克烘干样中的细胞数),优势种
The division of deep-sea column-like strata and the study of palaeoclimatic temperature are one of the important research topics in deep-sea stratigraphy. Abroad, based on the abundance of diatoms and the distribution of dominant species, many achievements have been made in the study of stratigraphy. Based on the regularity of individual size of Coscinodiscus nodulifer A. Schmidt and the combination of isotopic materials, It can be used as a reliable basis for palaeostate marker and stratigraphic division. In China, deep sea diatom stratigraphy study has not been reported. In this paper, diatom stratigraphy research methods, according to the abundance of diatoms (per gram of dry cells in the sample), the dominant species