They mainly consist of sandstone,in which quartzarenite and litharenite are dominant and arkose is lack.
碎屑
类为主，其中又石英类和屑类为主，缺少长石类。
屑
;正石英They mainly consist of sandstone,in which quartzarenite and litharenite are dominant and arkose is lack.
碎屑类为主，其中又石英类和屑类为主，缺少长石类。
声
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