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dc.contributor.author
Alloway, Brent V.
dc.contributor.author
Moreno, Patricio I.
dc.contributor.author
Pearce, Nick J. G.
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De Pol Holz, Ricardo
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Henríquez, William I.
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Pesce, Oscar H.
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Sagredo, Esteban
dc.contributor.author
Villarosa, Gustavo
dc.contributor.author
Outes, Ana Valeria
dc.date.available
2018-12-06T19:35:27Z
dc.date.issued
2017-08
dc.identifier.citation
Alloway, Brent V.; Moreno, Patricio I.; Pearce, Nick J. G.; De Pol Holz, Ricardo; Henríquez, William I.; et al.; Stratigraphy, age and correlation of Lepué Tephra: a widespread c. 11 000 cal a BP marker horizon sourced from the Chaitén Sector of southern Chile; John Wiley & Sons Ltd; Journal Of Quaternary Science; 32; 6; 8-2017; 795-829
dc.identifier.issn
0267-8179
dc.identifier.uri
http://hdl.handle.net/11336/66033
dc.description.abstract
We describe the stratigraphy, age and correlation of a prominent tephra marker, named Lepué Tephra, extensively distributed in north-western Patagonia. Lepué Tephra is well dated at c. 11 000 cal a BP from numerous lake and soil cover-bed sequences and its recognition is useful for assessing the rate and timing of deglaciation as well as associated environmental changes in this region during the last glacial termination and early Holocene. Lepué Tephra has attributes typical of a complex and compositionally zoned phreatomagmatic eruptive. While the initial rhyolitic phase can be readily distinguished from multiple eruptive products sourced from the adjacent Volcán Chaitén, the main erupted end member is of basaltic–andesitic bulk composition − similar to younger tephras sourced from Holocene monogenetic cones adjacent to the Volcán Michimahuida massif (tMim). Lepué Tephra can be correlated to an equivalent-aged pyroclastic flow deposit (Amarillo Ignimbrite) prominently distributed in the south-eastern sector of tMim. The source vent for these co-eruptive events is obscured by an extensive ice field and is currently unknown. The widespread radially symmetrical distribution of Lepué Tephra centred on tMim cannot be attributed solely to volcanological considerations. Reduced Southern Hemisphere westerly wind influence interpreted from climate proxies at the time of eruption are also implicated.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Lepué Tephra
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North-West Patagonia
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Tephrostratigraphy
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VolcÁN ChaitÉN
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Volcán Michimahuida
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Stratigraphy, age and correlation of Lepué Tephra: a widespread c. 11 000 cal a BP marker horizon sourced from the Chaitén Sector of southern Chile
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-23T20:24:11Z
dc.journal.volume
32
dc.journal.number
6
dc.journal.pagination
795-829
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Alloway, Brent V.. The University of Auckland; Nueva Zelanda. University Of Wollongong; Australia
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Fil: Moreno, Patricio I.. Universidad de Chile; Chile
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Fil: Pearce, Nick J. G.. Aberystwyth University; Reino Unido
dc.description.fil
Fil: De Pol Holz, Ricardo. Universidad de Magallanes; Chile
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Fil: Henríquez, William I.. Victoria University of Wellington; Nueva Zelanda
dc.description.fil
Fil: Pesce, Oscar H.. Universidad de Chile; Chile
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Fil: Sagredo, Esteban. Pontificia Universidad Católica de Chile; Chile
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Fil: Villarosa, Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales.; Argentina
dc.description.fil
Fil: Outes, Ana Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales. Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales.; Argentina
dc.journal.title
Journal Of Quaternary Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/jqs.2976
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/jqs.2976
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