The eruptive history of Turrialba volcano, Costa Rica, and potential hazards from future eruptions
Published:January 01, 2006
Mark Reagan, Eliecer Duarte, Gerardo J. Soto, Erick Fernández, 2006. "The eruptive history of Turrialba volcano, Costa Rica, and potential hazards from future eruptions", Volcanic Hazards in Central America, William I. Rose, Gregg J.S. Bluth, Michael J. Carr, John W. Ewert, Lina C. Patino, James W. Vallance
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Turrialba volcano's high summit elevation and steep slopes, its position upwind of the Central Valley, and its record of explosive eruptions all suggest that it poses a significant threat to Costa Rican population and economy. To better understand the nature and significance of this threat, the geology, stratigraphy, and recent eruptive history of Turrialba were investigated. Outcrops of lava and pyroclastic units from at least 20 eruptions of basalt to dacite are recorded in Turrialba's summit area. The majority of these eruptions preceded a major erosional period that may have involved glaciation and that produced a prominent northeast-facing valley at...