常见有岩石碎块，包括火山岩屑，基质大部分为高龄土和伊利石。
Rock fragments including volcanics are common and the matrix consists largely of kaolin and illite.
常见有岩石碎块，包括火山岩屑，基质大部分为高龄土和伊利石。
Rock fragments, including volcanics, are common, and the matrix consists largely of kaolin and illite.
常见有岩石碎块，包括火山岩屑，基质大部分为高龄土和伊利石。
Rock fragments, including volcanics, are common, and the matrix consists largely of kaolin and illite.
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