Abstract
It is widely accepted that rates of decay and soiling of stone monuments have accelerated in the last century. Soiling is an optical effect, a darkening of the surface that can be measured as a change in light reflectance (Newby et al 1991). Black crusts are among the most studied patterns of deterioration in historical buildings.
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© 2003 Springer Science+Business Media Dordrecht
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Valero, J.M., Alava, J.I. (2003). Melanin and Chromatic Changes in Black Crusts of Sandstone Monuments. In: Krumbein, W.E., Paterson, D.M., Zavarzin, G.A. (eds) Fossil and Recent Biofilms. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0193-8_27
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DOI: https://doi.org/10.1007/978-94-017-0193-8_27
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