dc.creatorDaga, Romina Betiana
dc.creatorRibeiro, Sergio
dc.creatorArribere, Maria Angelica
dc.date.accessioned2018-09-17T19:18:23Z
dc.date.accessioned2018-11-06T15:45:36Z
dc.date.available2018-09-17T19:18:23Z
dc.date.available2018-11-06T15:45:36Z
dc.date.created2018-09-17T19:18:23Z
dc.date.issued2016-03
dc.identifierDaga, Romina Betiana; Ribeiro, Sergio; Arribere, Maria Angelica; New records of late Holocene tephras from Lake Futalaufquen (42.8°S), northern Patagonia; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 66; 3-2016; 232-247
dc.identifier0895-9811
dc.identifierhttp://hdl.handle.net/11336/59951
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1900680
dc.description.abstractIn regions with limited knowledge of the historical volcanic record, like remote areas in the Andean Southern Volcanic Zone, the definition of reliable age-depth models for lake sequences represents a valuable tool for tephra layers dating. In Lake Futalaufquen (42.8°S), Northern Patagonia, a short sedimentary sequence was extracted after the AD 2008 Chaitén eruption with the purpose to analyze the records of volcanic eruptions at these poorly studied latitudes. The sequence was dated by 210Pb, 137Cs, and 14C techniques. Five tephras were identified for the last 1600 years, restricted to the last 5 centuries. Sedimentology, morphology, and geochemical properties allowed the characterization of the tephras and their correlation with tephras recently identified proximal to the sources, mainly from Chaitén and Huequi volcanoes, and Michinmahuida accessory cones, representing the first distal records reported of these tephras. Furthermore, tephras modeled ages obtained by the sequence age-depth model shrink the ages for the volcanic events, like a potential cycle of activity from Michinmauida accessory cones during AD 1530 ± 55, one eruption from Huequi volcano at AD 1695 ± 50, and a possible recent eruption from Chaitén at AD 1775 ± 40. Additionally, the work contributes to improve the regional volcanic records knowledge, basic for volcanic hazard assessment.
dc.languageeng
dc.publisherPergamon-Elsevier Science Ltd
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.jsames.2015.12.003
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981115300985
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectARGENTINA
dc.subjectLAKE SEDIMENTS
dc.subjectPATAGONIA
dc.subjectSOUTHERN VOLCANIC ZONE
dc.subjectTEPHRA
dc.titleNew records of late Holocene tephras from Lake Futalaufquen (42.8°S), northern Patagonia
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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