Volcanogenic evidences of north andean tectonic segmentation : volcanoes Sumaco and El Reventador Ecuadorian Subandean zone Andean Geodynamics : extended abstracts Barragan, J.R. /Baby, Patrice VOLCANISME ARC VOLCANIQUE TECTONIQUE ROCHE VOLCANIQUE LAVE COMPOSITION MINERALOGIQUE ELEMENT EN TRACE SUBDUCTION ADAKITE SHOSHONITE IRD Université Paul Sabatier 2002 text https://www.documentation.ird.fr/hor/fdi:010047920 fdi:010047920 Barragan J.R., Baby Patrice. Volcanogenic evidences of north andean tectonic segmentation : volcanoes Sumaco and El Reventador Ecuadorian Subandean zone. In : . Andean Geodynamics : extended abstracts IRD ; Université Paul Sabatier, 2002, 73-76 ISAG.International Symposium on Andean Geodynamics, 5., Toulouse (FRA), 2002/09/16-18 EN ANDES EQUATEUR