This paper focuses on the description and the characterisation of volcanic rocks and soils of Madeira Island, based on data from expertise judgment, field survey and laboratory tests. The objective has been the compilation of data from geotechnical designs for Madeira Island, in the last 20 years, in order to describe the geological conditions and to evaluate the geotechnical parameters of the main volcanic formations such as: basalts, breccias and tuffs.

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