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(Article of periodic en Anglais - 1988)

Document title

Contour scaling of a sandstone by salt weathering under simulated hot desert conditions

Authors(s) and Affiliation(s)

SMITH B.J. ; MCGREEVY J.P. ;

Abstract

Surface disaggregation and essentially surface-parallel cracks were produced in sandstone blocks using 10 per cent solutions of sodium sulphate and magnesium sulphate applied daily to single exposed surfaces for sixty days. A control block soaked once in saturated magnesium sulphate and subsequently wetted daily with distilled water showed extensive surface disaggregation, but no cracking. Both surface disaggregation and subsurface cracking were associated with relative concentrations of microcrystalline salt. A tentative model of contour scaling is proposed, which involves linking together potential cracks by salt-induced fracturing of intervening, crack-stopping grains

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 1988, vol. 13, no8 [pp. 697-705]

Bibliographic references : 16 réf.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

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