3 Zanchi, A. 2006 The Deformational Mega-Structures of the Pianico-Sellere Basin: Which Evidence for their Origin? The Quaternary of the Italian Alps Milano CNR, Istituto per la Dinamica dei Processi Ambientali 22-28 14-15 sept. 2006 mega-strutture, Pianico-Sellere, origini, Quaternario, Alpi, Italia