[Petrology and Structural Geology] Ophiolite Genesis and Evolution of the Oceanic Lithosphere Volume 5 || Genesis and Emplacement of the Supra-Subduction Zone Pindos Ophiolite, Northwestern GreecePeters, Tj.; Nicolas, A.; Coleman, R. G. · 1991

Geochemistry and petrology of the Galeras Volcanic Complex, ColombiaMarta Lucia Calvache V; Stanley N. Williams · 1997

Galeras volcano, Colombia Interdisciplinary study of a Decade VolcanoJohn Stix; Marta Lucia Calvache V; Stanley N. Williams · 1997

Stratigraphy and chronology of the Galeras volcanic complex, ColombiaMarta Lucia Calvache V; Gloria Patricia Cortés J; Stanley N. Williams · 1997

Lithic-dominated pyroclastic flows at Galeras volcano, Colombia—An unrecognized volcanic hazardCalvache V., Marta Lucia; Williams, Stanley N. · Geology · 1992

Sulfur dioxide from Nevado del Ruiz volcano, Colombia: total flux and isotopic constraints on its originStanley N. Williams; Neil C. Sturchio; Marta Lucia Calvache V.; Ricardo Mendez F.; Adela Londoño C.; Nestor García P. · 1990