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。鄂尔多斯高原(图1)是其中很早以来有过不同程度发现的地区,但系统研究尚少。 The Quaternary paleolithic sedimentation refers to the sandy sediments formed by the geological function of the wind during the Quaternary period before the advent of modern wind-blown sand. Quarrying of ancient Quaternaries (or ancient sand dunes, also known as fossil dunes) has been studied abroad by many foreign countries, and many places in China are also frequently found. The Ordos Plateau (Figure 1) is one of the regions where it has been discovered to varying degrees since, but there are few systematic studies.