They mainly consist of sandstone,in which quartzarenite and litharenite are dominant and arkose is lack.
屑岩以砂岩类
主，其中又以石英砂岩类和岩屑砂岩类主，缺少长石砂岩类。
They mainly consist of sandstone,in which quartzarenite and litharenite are dominant and arkose is lack.
屑岩以砂岩类主，其中又以石英砂岩类和岩屑砂岩类主，缺少长石砂岩类。
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