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Experimental investigation of silt formation by static breakage processes: the effect of temperature, moisture and salt on quartz dune sand and granitic regolith
Version of Record online: 14 JUN 2006
Volume 30, Issue 1, pages 49–62, February 1983
How to Cite
PYE, K. and SPERLING, C. H. B. (1983), Experimental investigation of silt formation by static breakage processes: the effect of temperature, moisture and salt on quartz dune sand and granitic regolith. Sedimentology, 30: 49–62. doi: 10.1111/j.1365-3091.1983.tb00649.x
- Issue online: 14 JUN 2006
- Version of Record online: 14 JUN 2006
- Manuscript received 18 February 1982; revision received 23 April 1982
ABSTRACT Weathering simulations carried out using a climatic cabinet have demonstrated that diurnal temperature and humidity variations typical of those occurring in warm desert environments are ineffective in causing static breakage of quartz dune sand and polymineralic regolith sand grains. Wetting and drying combined with temperature variations was also found to be a relatively ineffective weathering process. These results suggest that ‘crack tip’ processes are insignificant where mineral grains are not subject to static loading. Sodium sulphate weathering was found to cause slight damage to quartz dune sand grains and major damage to first cycle regolith grains. Feldspars and mica in the regolith sands were more susceptible to salt action than quartz. Salt weathering of the regolith sands produced substantial quantities of silt in the size range typically found in natural loess deposits.