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该文通过对塔里木河中游地区剖面沉积物粒度、14C测年、CaCO3和沉积物特征进行了分析,说明全新世地层中的中、细砂形成与现代流沙经历了相同的发育模式:即冲积砂风蚀形成沙丘砂,以及现代风成砂是继承古风成砂并经历再次水流作用和风力作用形成的。地层中亚粘土是河流冲洪积物。亚粘质土与细砂族目交替构成本区全新世地层主要的沉积物。地层沉积物特征体现了本区以冷干—暖干气候为主。
In this paper, sediment grain size, 14C dating, CaCO3 and sediment characteristics in the middle reaches of the Tarim River were analyzed. It is concluded that the formation of medium and fine sand in the Holocene strata experienced the same development pattern as that of the modern quicksand: that is, alluvial sand Wind erosion forms dune sand, and modern wind sand is inherited from ancient winds of sand and undergoes re-flow and wind forces. The middle layer of clay is the river alluvial sediments. Sub-clayey soils and fine-grained families alternate to form the main sediments of Holocene in this area. Stratum sediment characteristics reflect the region to cold dry - warm climate-based.