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第四纪古风成沙,是指现代风成沙出现以前的第四纪期间由风的地质作用所形成的沙质沉积物。国外对第四纪古风成沙或古沙丘(又称化石沙丘)已有较多研究,国内不少地方亦屡有发现,但系统研究尚少。
Quaternary paleosols, refers to the formation of modern winds before the Quaternary period formed by the geological role of the wind sediments of sandy sediments. Quarrying of ancient Quaternaries or ancient sand dunes (also known as fossil dunes) have been studied abroad by many foreign countries. In many places in China, they are often found, but there are still few systematic studies.