冰川沉积与非冰川沉积中砾石和碎屑矿物表面的形态特征

从李四光创立我国第四纪冰川学说以来,至今半个世纪,在中国东部仍然存在着有无冰川和冰川作用次数与规模大小之争。皆因何谓冰川沉积?它有哪些特殊标志尚未能统一认识。我们想以西部高山及邻近地区冰碛与非冰川沉积为例,从砾石与碎屑矿物表面形态入手,研究其砾石表面形态和碎屑矿物在显微镜和扫描电镜下的表面微结构等特征。希望和从事冰川地质、地貌及第四纪沉积研究的同志们一起把这项工作向前推进。

SURFACE MORPHOLOGICAL CHARACTERISTICS OF THE GRAVELS AND THE DEBRIS MINERALS IN GLACIAL ANE NON-GLACIAL DEPOSITS

This paper introduces the surface forms of gravels and the textures of minerals in tills and non-tills from microscopic and scanning electro microscopic studies. Their characteristics are innate in themselves, but sometimes they are similar to one another.Glacial stria forms groups on a surface, and sometimes they cross each other. Glacial. stria are deep and smooth, while those of mud flow are often shallow small irregular and not in the same direction.