There have been different views on origin of the clay-gravel bed in Guilin area.
关于桂林粘土砾石层的成因问题，已经有几种不同意见。
Red clay gravel bed in Guilin area attracts many attentions to its engineering-geological characteracteristics. But its genesis is still in controversy.
桂林地区的红土砾石层以其独特的工程地质特征引起了许多中外学者的注意，对它的成因至今还存在争议。
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