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为系统了解西菲律宾海700ka以来柱状沉积物的常量元素组成特征及其物源和古环境指示意义,对本哈姆高原上MD06-3047孔的221个样品进行了粒度和常量元素组成分析,并测试了其中16个典型沉积物中碎屑态的常量元素含量.物源判别图解及R型因子分析结果均表明钻孔中主要氧化物含量在垂向上的变化主要受控于附近火山碎屑物质沉积作用和陆源风尘物质输入,而海洋生物沉积作用及热液活动的影响较小.特别是以Al2O3和K2O为代表的陆源风尘因子的得分变化表现出明显的冰期-间冰期旋回特征,并与南极冰芯的古温度记录及中国黄土的东亚冬季风记录间具有良好可比性,进而为揭示东亚冬季风强度及风尘源区干湿条件制约下的研究区内陆源风尘物质输入演化历史提供了新的替代性指标.
In order to understand systematically the regular element composition of columnar sediments and their provenance and palaeoenvironmental significance in the West Philippine Sea since 700 ka, the particle size and constant elemental composition of 221 samples in MD06-3047 hole of Ben Hamm Plateau were analyzed and tested 16 of the typical sediments in the detrital state of the macroelement content analysis of provenance and R-factor analysis results show that the major oxide content in the borehole vertical changes mainly controlled by the nearby deposition of volcaniclastic material And the import of dusty materials from terrestrial sources, while the sedimentation of marine organisms and the hydrothermal activity have little effect, especially the change of the scores of terrestrial dust factors represented by Al2O3 and K2O show obvious glacial-interglacial cycles, The palaeoclimate record of ice core and the East Asian winter monsoon record of Chinese loess have good comparability and thus provide new information for revealing the history of winter monsoon in East Asia and the input and evolution history of terrestrial dust material in the study area under the conditions of wet and dry wind and dust source area The alternative indicator.