【摘要】 楔状构造是第四纪地层中较常见的一种现象,其成因复杂,具有丰富的环境信息.本文根据笔者的研究和认识,对已认识的楔形构造进行了分类,并对其形成、特征和环境意义以及区别标志作了初步的归纳和分析.更多还原

【Abstract】 Wedge structure is a common phenomenon in Qauternary strata. It has complicated origin and may provide a lot of environmental information. This paper for the first time classifies the recognized wedge structures, such as earthquake wedge, ice wedge cast, weathering wedge, mud crack wedge, erosion wedge and collapse wedge. It also analyzes the distinctive signs and environmental significance of the wedge structures.更多还原