青藏高原东北部晚第四纪黄土-古土壤的元素组成及其物源指示

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曾方明¹(

), 薛红盼¹^,²

Elemental compositions of the late Quaternary loess-paleosol on the northeastern Qinghai-Tibet Plateau and their implications for provenance

Fangming Zeng¹(

), Hongpan Xue¹^,²

图5. 青海湖地区各类样品的K₂O/Al₂O₃-TiO₂/Al₂O₃、TiO₂/Al₂O₃-Zr/Nb、K₂O/Al₂O₃-Zr/Ti、K₂O₃/Al₂O₃-Zr/Nb图解

Fig.5. Plots of K₂O/Al₂O₃ vs. TiO₂/Al₂O₃, TiO₂/Al₂O₃ vs. Zr/Nb, K₂O/Al₂O₃ vs. Zr/Ti, and K₂O₃/Al₂O₃ vs. Zr/Nb for samples from the Qinghai Lake area