庐山红色泥砾泥石流成因商榷

Disecussion on the Formatation of the Debris Flow of the Red Bounder Clay in the Lushan

庐山红色泥砾是经过堆积和堆积后风化两个阶段的产物,由于风化使土层呈红色并形成一部分粘粒;泥砾中砾石风化,可溶岩砾石缺失说明原生结构构造已遭破坏。用现代泥石流堆积物特征与之直接对比,以论证其成因的方法是不可靠的。土层地球化学特征也说明它不是搬运产物,故泥石流成因说不能成立。

The forming processes of the red bounder clay in the Lushan Mount include depos-itting and weathering after it. The properties of the bounder clay in this area, such as the chemical compasition, clay and gravel composition, were changed greatly because of weathering. The characteristics of the red bounder clay, that formed in the middle pleistocene can't be compared with those of the debris flow formed at present. Thus the usual argument is untenable on the formatation of the debris flow of the red bounder clay in the Lushan Mount.