The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.Ĭlavero J E, Sparks R S J, Pringle M S, Polanco E, Gardeweg M C, 2004. The latest documented activity produced an ash layer dated ~2000 years ago. The youngest volcanic stage, beginning about 9000 years ago, produced the summit lava dome of the Putre Unit at the E and S ends of the complex. Studies have shown that explosive activity with dome growth and associated block-and-ash flows and lahars continued into the late Holocene. At least three major edifice collapse events have produced debris-avalanche deposits, the youngest of which underlies Putre. It overlies Pleistocene ignimbrite deposits and trends roughly E-W, with activity migrating generally to the SW during four principal periods of activity dating back at least 1.5 million years. The elongated volcanic massif, known locally as Nevados de Putre, consists of an andesitic stratovolcano and a dacitic lava-dome complex. The Taapaca volcanic complex, lying W of the main Andean chain, rises NE of the small town of Putre, the principal settlement of the northern Chilean Altiplano.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |