They mainly consist of sandstone,in which quartzarenite and litharenite are dominant and arkose is lack.
碎
砂类
主，其中又石英砂类和砂类主，缺少长石砂类。
They mainly consist of sandstone,in which quartzarenite and litharenite are dominant and arkose is lack.
碎砂类主，其中又石英砂类和砂类主，缺少长石砂类。
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