引言除南极洲之外,在所有大陆上都发现有晚前寒武纪的冰川沉积。在缺乏有效的古生物标志和准确同位素年龄情况下,有关冰川沉积物的相互关系能够促进正确的古环境序列的建立,为推断同期沉积提供了根据。古环境的种种解释,有赖于我们对现代和近代环境的了解和认识。近十年来对现代冰川沉积环境的部分工作,结果在认识上有了很大的进步。因此,许多以前的沉积模式现在都被废弃了。根据客观标准确定严格的成因分类,现代都被视为主要的使用工具, Introduction Pre-Precambrian glacial deposits were found on all continents except Antarctica. In the absence of effective paleontological signs and accurate isotopic ages, the interrelationship of glacial sediments can promote the establishment of a correct paleoenvironment sequence and provide a basis for inferential sedimentation. The ancient interpretation of the environment depends on our understanding of the modern and modern environment. In the past decade, some achievements made in the sedimentary environment of modern glaciers have greatly improved their understanding. As a result, many previous sedimentary patterns are now abandoned. According to objective criteria to determine the strict classification of causes, modern are regarded as the main tool of use,