The contribution of laboratory experiments to periglacial research: history, achievements and perspectives

Abstract

ORIGINAL TITLE:  La contribution des experiences en laboratoire aux recherches periglaciaires: histoire, acquis et perspectives

Many frost shattering experiments have been done over the past. The comparison between the size and morphology of the experimental gelifracts against those from quaternary deposits have allowed a better comprehension of the palaeoclimatic conditions of the genesis and settling of many slope formations. The main part of the experiments was conducted on blocks of small or medium dimensions; it is now necessary to compare the results obtained against the behaviour of rock walls and cornices. Concerning the freeze–thaw action of the soils, the experiments provide better knowledge of the major role that certain processes such as frost sorting and differential frost heaving play in the genesis of cryosoils and cryoturbations.