冰碛物年代及其环境变化

冰碛物年代一直是冰川学研究的一个重要内容，也是环境变化深入研究的对象，冰川沉积物对于气候地层的建立起着不可忽视的作用。但是由于冰碛物自身与海洋、黄土等记录环境变化的内容相比存在局限性，所以造成对冰期划分，对比的不利。另外，自身年代缺乏也限制着全球冰期的划分与对比，笔者认为，目前的冰碛物研究对于气候地层起到了补充、验证的作用，在较大的时间尺度上是可行的，但是要提取高分辨率的环境变化信息，应该探索新的替代载体；同时要大力加强冰碛物绝对年代的研究。

Moraine age and environmental change

The moraine age is not only one of the important contents of ancient glacier but also the object of the environmental change. The glacial deposits play an important role on constructing the climatic stratigraphy. However, compared with the environmental change records, the deep sea and loess contain, the moraine deposit has the localization, which results in the bad influence on partition and contrast of glacial stage. Moreover, this phenomenon also affects the global change research. The authors consider that the research of moraine deposit ages will make up for and validate the climatic stratigraphic construction. New replaced environmental indexes should be explored in order to withdraw the high resolution information in environmental change according to the glacial deposits. At the same time, the absolute age of glacial deposits should be strengthened in the future.