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Background:Volcán Suchitán, NE of the city of Jutiapa, is one of the largest volcanoes in SE Guatemala. The 2042-m-high summit of the andesitic-to-basaltic stratovolcano is elongated in a N-S direction. Several large canyons cut the slopes of the dominantly andesitic edifice. A large parasitic cone, Cerro Mataltepe, is located on the upper northern flank, and two smaller cones are located on the lower northern flank. Two basaltic lava flows of Holocene age are located on the northern and NW flanks (Williams et al., 1964), and many flank vents are basaltic. Suchitán was constructed immediately to the east of the 5-km-wide basaltic-to-dacitic Retana caldera, formed in part in association with the eruption of a dacitic pumice deposit. Steep walls 60-250-m high rise above the flat caldera floor. One of the latest basaltic lava flows from Suchitán flowed through a low notch in the eastern caldera rim. Several lava cones and a maar are located along a N-S line north of Retana caldera. A reported eruption of Suchitán in 1469 is considered to have actually been from Atitlán volcano in the Guatemalan highlands.
Smithsonian / GVP volcano information