REE and trace element data supported the conclusion further. The chemical index of weathering ( CIW) as well as TiO 2 and Al 2 O 3 concentrations reflected a more intense weathering in the provenances of the shales in north part.

  • 北部页岩明显偏高的TiO2和Al2O3含量以及化学风化指数(CIW)表明北部沉积物的源区经历了更强烈的风化作用。

  • 互联网摘选 2025-02-26 23:52:54

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