新世纪亚洲风尘系统地球化学研究进展

Progress of Aeolian Sediments and Dust Geochemistry in Asia in the New Century

简要评述了20世纪亚洲风尘沉积地球化学研究的主要成果,总结了新世纪以来亚洲风尘沉积地球化学在研究内容、方法、时间尺度及年代学方面的主要进展。较详细概述了最近十余年风尘沉积物在环境与气候替代性指标研究方面获得的新成果,并从矿物特征、元素地球化学、同位素和单矿物地球化学指标方面示踪风尘沉积物源研究进行了总结。指出亚洲风尘地球化学研究应在空间上从黄土-沙漠区向中亚内陆、西北太平洋扩展;在时间上拓展到中新世以来的风尘沉积;方法上应结合大气环流、地貌过程等,进行综合分析,并开拓新的测试手段。此外,应加强现代风尘过程的研究。亚洲风尘与风尘沉积地球化学研究的目的是解决风尘的产生、搬运和沉积的地球化学过程与环境变迁。

This paper reviewes the main achievements of aeoilan sediments and dust geochemistry in Asia in the past century. The main progress was summarized in terms of research scope, methodologies, time scale and chronology in the past decade. The new perceptions of proxy indexes of dust deposition in recent 10 years were elaborated, studies of tracing dust sources with respect to mineral characteristics, elemental geochemistry, isotope chemistry and mono-mineral geochemistry was commented as well. It is concluded that the researches on the aeolian deposits and dust has extended 5tom loess-desert area to inland of Central Asia and Northwest Pacific, and, from the Quaternary to the Neogene, with combining analyses of atmospheric circulation and landform process etc.. In addition, the modern dust process has been paid special attention by the investigators.