Eyewitness, stratigraphy, chemistry, and eruptive dynamics of the 1913 Plinian eruption of Volcan de Colima, Mexico
Por:
Saucedo R., Macías J.L., Gavilanes J.C., Arce J.L., Komorowski J.C., Gardner J.E., Valdez-Moreno G.
Publicada:
1 abr 2010
Resumen:
Based on the stratigraphic record of the deposits, analysis of previous works, historic archives, and eyewitness accounts the 1913 eruption of Volcan de Colima was reconstructed. The eruption started in 17 January and peaked in 20 January, 1913. It occurred in three main phases: 1) An opening phase with the generation of Merapi-type pyroclastic flows (units F(1), F(2), F(3)) and a pyroclastic surge (S(1)), 2) A vent-clearing phase with strong explosions that produced Vulcanian-Soufriere-type pyroclastic flows (F(4)) and a pyroclastic surge (S(2)) which destroyed the summit dome decompressing the magma system, and 3) a Plinian phase with the establishment of a similar to 23 km high column dispersing a fallout (C(1)) to the NE followed by the collapse of the column that generated a pyroclastic surge (S(3)) and 15-km long pumice-rich pyroclastic flows (F(5)). After the eruption, remobilization of the pyroclastic material generated lahars in main gullies around the crater. Fallout C1 blank
Filiaciones:
Saucedo R.:
Universidad Autónoma de San Luis Potosí, Instituto de Geología/Fac. Ingeniería, Av. Manuel Nava No 5, Zona Universitario 78240, San Luis Potosí, S.L.P., Mexico
Macías J.L.:
Univ Nacl Autonoma Mexico, Dept Vulcanol, Inst Geofis, Coyoacan 04510, DF, Mexico
Gavilanes J.C.:
Facultad de Ciencias, Universidad de Colima, Bernal Díaz del Castillo # 340, Col. Villas San Sebastián, C.P. 28045, Mexico
Arce J.L.:
Univ Nacl Autonoma Mexico, Dept Reg Geol, Inst Geol, Mexico City 04510, DF, Mexico
Komorowski J.C.:
Institute de Physique du Globe de Paris, Paris, France
Gardner J.E.:
Department of Geological Sciences, The University of Texas at Austin, Texas 78712, United States
Valdez-Moreno G.:
Escuela de Ciencias de la Tierra, Universidad Autónoma de Guerrero, Taxco, Guerrero, Mexico
|