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近年来国外对晚前寒武纪的古冰川活动的类型、沉积相和环境、冰期划分及时代等问题作了较多的论述,在我国震旦纪冰成岩研究也有一些新的发现和新成果。随着研究工作的不断深入,许多新的问题被提出来并引起争论。作者通过近几年在新疆研究震旦纪冰成岩的一些体会和参加了陕西、甘肃、青海、河南、湖北、云南、安徽、宁夏等省区震旦系的观察、学习,对目前存在的几个与冰成岩有关的问题提出几点讨论意见供参考。错误及不妥之处请批评指正。
In recent years, the types of ancient glaciers, sedimentary facies and environment, division of glacial periods and epochs and other issues of late Precambrian in foreign countries have been discussed abroad in more detail. In the study of Sinian igneous rocks in China, there are also some new discoveries and new achievements . As research progresses, many new problems have been raised and debated. In recent years, the author has studied some Sinian igneous rocks in Xinjiang and participated in the observation and study of Sinian in Shaanxi, Gansu, Qinghai, Henan, Hubei, Yunnan, Anhui and Ningxia provinces, A number of issues related to icydemployment proposed a few comments for reference. Please correct comments and errors.