引言最近,Khalaf和Gharib(1985)关于风成石英沙粒圆度的论文很受欢迎,因为它涉及到非固结沙的沉积学的一个相对被忽视的方面。他们的结论是:风成沙颗粒主要为次圆状至次棱角状,圆度随颗粒粒径的增大而提高,而且圆度是从原始沉积物中继承下来的。这些结论实质上同意了Folk(1978)以及Goudie和Watson(1981)的发现。然而,在Khalaf和Gharib的研究中还有许多有一定价值的问题没有讨论。 INTRODUCTION Khalaf and Gharib (1985) recently published a paper on the circularity of aeolian sand grains as it relates to a relatively neglected aspect of the sedimentology of unconsolidated sand. Their conclusion is that the grains of Fushansha are mainly sub-circular to sub-angular, the circularity increases with the increase of particle size, and the roundness is inherited from the original sediments. These conclusions essentially agree with the findings of Folk (1978) and Goudie and Watson (1981). However, there are many valuable questions that have not been discussed in the Khalaf and Gharib studies.