The element geochemistry behavior of guanghan claypan indicated that it has the dry change tendency in the environment 广汉亚粘土层的元素地球化学行为表明它是在变干趋势的环境中形成的。
2.
Through the study about lanthanon and trace element , we can obtain the guanghan claypan formation that has the homologous ingredient characteristic 通过对微量元素和稀土元素的研究，可以得出广汉粘土层的形成具有同源成分特征。
