关键词: 冰碛石, 泥石流石, 形态特征

Abstract:

The sphericity and roundness of clasts have been used to distinguish glacigenic stones and other diamicton deposits for a long time， however， it is not enough to describe the subtle features among them. Therefore， it is necessary to further excavate the more discriminative indicator. Aiming to identify the glaciated stones and debris flow stones， several concepts are presented in this paper， including external circular feature， roughness feature， roundness-volume feature and their multimodal mixing characteristics in the diamicton deposits. These features， combining with other micro-morphological features， such as the glacial striations， glacial chatter marks， can be used to determine the origin of contentious deposition， especially in the eastern China. Meanwhile， the author hope that these suggestions will be corrected and improved in practice.

Key words: glaciated stone, debris flow stone, morphological feature