冻融循环对恐龙化石风化破坏机理的研究

Study on Weathering Damage Mechanism of Dinosaur Fossils by Freezethaw Cycle

摘要:

恐龙化石的风化过程比较复杂，造成恐龙化石风化破坏的因素众多，冻融循环是其中一个重要因素。通过室内试验，研究冻融循环导致恐龙化石及围岩风化破坏机理。试验证明冻融循环会降低围岩的强度、弹性模量等，多次冻融循环会使围岩、化石出现质重损失、泥化、掉块等现象；冻融循环是导致化石的风化破坏极其重要的因素。

Abstract:

The weathering process of dinosaur fossils is relatively complex, and there are many factors that cause the destruction of dinosaur fossils. The freezethaw cycle is one of the important factors. In this paper, the mechanism of weathering destruction of dinosaur fossils and surrounding rocks caused by freezethaw cycle has been studied through indoor experiments. It is proved that the freezethaw cycle will reduce the strength and elastic modulus of the surrounding rocks, and multiple freezethaw cycles will cause the surrounding rocks and fossils to suffer from mass loss, mudization, and block loss. The freezethaw cycle has a great effect on the physical destruction of fossils.