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mud crack 【地質學;地理學】泥裂。

mud dauber

The occurrence of variegated polymictic conglomerate sediment , mud cracks , gypsum strata and so on can provide evidences for aridity climate in western liaoning 兩剖面復成分礫巖雜色沉積、泥裂、石膏層等為該區可能存在的干旱氣候提供了依據。