| 2. | ( 3 ) negative electricity , radius , complex numbers , electrical values of ions , maturity of weathering profiles , distribution of elements in parent rocks , medium conditions , absorption of clay minerals and organic matters are important factors controlling geochemical behavior of elements during black shales weathering ( 3 )电负性、离子半径、配位数、电价、剖面发育程度、元素在母岩中的分布、介质条件、粘土矿物和有机质吸附作用等是影响黑色页岩风化过程中元素行为的重要因素。 |