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磁性地层学研究表明西秦岭黄土的形成年代约为 0 8Ma ,其物质可能主要来自邻近的青藏高原 ,指示青藏高原此时大气环流和地表环境可能产生急剧的变化 .
The magnetic stratigraphic study shows that the formation age of Xiqinling loess is about 0 8Ma. Its material may come from the adjacent Qinghai-Xizang Plateau, indicating that the atmospheric circulation and the surface environment of the Qinghai-Xizang Plateau may change drastically.