Online resources

A Geological Tour of the Archipelago of Madeira – Main geo-touristic sites (2010), by Ribeiro, M. and Ramalho, M.
Work promoted by LNEG (National Laboratory of Energy and Geology) and Direcção Regional do Comércio, Indústria e Energia aiming to encourage cultural and
scientific tourism on the islands of the Archipelago of Madeira. PDF (a portuguese version from 2007 can be found here)