中太平洋西部海底沉积物孢粉分析与C14年代测定
SPORE-POLLEN ANALYSIS AND C14 DATING OF BOTTOM SEDIMENTS IN WESTERN PART OF THE CENTRAL PACIFIC
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摘要: 1978年12月-1979年8月,我国参加了世界气象组织主办的“第一次全球大气试验”.其间,我国科学考察船在中太平洋西部海域进行了海底沉积物调查研究工作.Abstract: Twenty eight families and eleven genera of spore and pollen have been found in the sediments.Through the analysis of the content and assemblages of these spores and pollen grains, it has been found that they come mainly from the islands in the west, and that the main current transporting them is the Equatorial Counter-Current. In the bottom sediments of this area, the spores and pollen grains are by far the most abundanu in the Calcareous ooze, next in the siliceous-calcareous ooze and red clay.From the analysis of the column samples it is revealed that minor fluctuations of the climate have occurred since the late pleistocene.
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