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Revista geológica de Chile
Article . 2003 . Peer-reviewed
Data sources: Crossref
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Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)

Authors: Kilian, Rolf; Hohner, Miriam; Biester, Harald; Wallrabe-Adams, Hans J.; Stern, Charles R.;

Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)

Abstract

Se han estudiado testigos de tefras y sedimentos de la peninsula Munoz Gamero con el seno Skyring y con el proposito de mejorar la tefrocronologia local. Nuevas edades 14C junto con tasas de crecimiento de las turbas y de sedimentacion, proporcionan nuevas marcas para la edad de las tefras. La capa mas gruesa de tefra (5-15 cm) se origino en una erupcion del volcan del monte Burney, a los 4,254±120 anos calibrados AP. Las isopacas de esta erupcion indican una deposicion de ca. 2,5 a 3 km3 de tefra, principalmente en el area andina forestada, al sureste del volcan. El monte Burney tuvo otra gran erupcion pliniana entre 9,009±17 y 9,175±110 anos cal. AP, y cuatro erupciones menores durante el Holoceno. Se observan, tambien, en algunos testigos tefras de las grandes erupciones de los volcanes Reclus (>15,384±578 cal. anos AP), Hudson (entre 7,707±185 y 7,795±131 cal. anos AP) y Aguilera (<3,596±230 cal. anos AP) como lo indican las composiciones caracteristicas de los vidrios de tefra, los cuales difieren entre los diferentes centros volcanicos. Se establecio una perdida significativa de los elementos alcalinos durante la alteracion del vidrio volcanico en las capas de tefra, especialmente en los testigos de suelos acidos. lo que podria ser un factor importante en el suministro de nutrientes para las plantas.

Keywords

Holocene, Tefra, Mount Burney, Monte Burney, Volcanism, Tephra, Volcanismo, Cordillera de los Andes, Patagonia, Holoceno

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
82
Top 10%
Top 10%
Top 10%
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