RT Journal Article T1 Características composicionales y procesos de evolución magmàtica en el complejo volcánico sur-lll de Fuerteventura (Islas Canarias) T1 Composition al features and fractionation processes in the Southern Volcanic Complex III of Fuerteventura (Canary Islands) A1 Hernán, Francisco A1 Cubas, C. R. A1 Ancochea, Eumenio A1 Brändle, José Luis A1 Huertas, María José AB The Southern Volcanic Complex III is form ed by basalts, a lesser am o u n t o f trachybasalts and some scarce trachytes, a ll o f them m ild ly alkaline. Crystal fra ction ation w a s in an early stage, controle d by crystallisation and extraction of olivine (60%) and clinopyroxene (40%). The crystallisation path is, then, ruled by dominant clynopyroxene and lesser proportions of plagioclase and Ti-magnetite. Later extraction of plagioclase and clinopyroxene and some other differentation processes, could account for the presence of trachytes.The Angostura Formation representing the most recent activity within the entire Southern V o lc a n ic C om ple x, consists o f s tr o n g ly a lk a lin e an d u ltra a lk a lin e rocks. These rocks are scarcely differentiated, though certain fractionation tendences dominated by olivine extraction are observed PB Sociedad Geológica de España YR 1996 FD 1996 LK http://hdl.handle.net/10272/12251 UL http://hdl.handle.net/10272/12251 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026