Examinando por Materia "Active volcanism"

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    Geomorphological Features of the Galeras Volcanic Complex
    (SPRINGER, 2016-01-01) Calvache, M.L.; Duque-Trujillo, J.F.; Calvache, M.L.; Duque-Trujillo, J.F.; Universidad EAFIT. Departamento de Ciencias; Geología Ambiental y Tectónica
    The Galeras volcanic complex, near the city of Pasto, was formed in several steps. At similar to 560 ka, BP a major caldera (the Coba Negra Caldera) appeared with its center similar to 5 km west of the present-day active volcano top. This caldera was 5 km in diameter and elongated in the E-W direction. The wall of the subsequent Jenoy caldera is covered by glacial morphology indicating a pre-glacial (