Laboratory simulation of ‘the wick effect’ in salt weathering of rock

作者: A. S. Goudie

DOI: 10.1002/ESP.3290110305

关键词: WeatheringSodium carbonateSodiumMineralogyGypsumSalt (chemistry)GeologyMagnesiumCrystallizationHaloclasty

摘要: ‘The wick effect’ is the upward migration of saline solutions into rocks and their subsequent crystallization. Lower Carboniferous sandstone blocks rectangular shape have been subjected to this process in laboratory using a range salt types, concentrations, various mixtures salts. Some treatments produced severe disintegration, notably sodium carbonate mixture with magnesium sulphate, whereas other salts (including chloride gypsum) were much less effective. The debris by experimental weathering included appreciable quantities silt-sized material, which analysed laser granulometer. Such material could provide source for desert loess.

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