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黄土高原S1古土壤的地球化学特征及其对物源的指示

, PP. 338-346

Keywords: 黄土,古土壤,地球化学,物源

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Abstract:

对黄土高原中部的蓝田剖面与黄土高原西部的定西和天水剖面的S1古土壤的化学元素进行了对比。3个剖面的Al-Ti-Zr比值接近,La/Th和Ce/Pb比值以及稀土元素配分模式各与上大陆地壳的接近,表明黄土高原S1古土壤的来源粉尘经历了多次的搬运-沉积循环过程,而使物源呈现均一的特性。物源的均一性初步保证了地球化学指标的空间比较的可行性。

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