Geochronologic evidence of a large magmatic province in northern Patagonia encompassing the Permian-Triassic boundary

dc.contributor.authorLuppo, Tomas
dc.contributor.authorLopez de Luchi, M.G.
dc.contributor.authorRapalini, A.E.
dc.contributor.authorMartinez Dopico, Carmen I
dc.contributor.authorFanning, Christopher Mark
dc.date.accessioned2021-11-02T01:00:04Z
dc.date.issued2018
dc.date.updated2020-11-23T11:42:29Z
dc.description.abstractThe Los Menucos Complex (northern Patagonia) consists of ~6 km thick succession of acidic and intermediate volcanic and pyroclastic products, which has been traditionally assigned to the Middle/Late Triassic. New U/Pb (SHRIMP) zircon crystallization ages of 257 &177; 2 Ma at the base, 252 &177;2 Ma at an intermediate level and 248 &177; 2 Ma near the top of the sequence, indicate that this volcanic event took place in about 10 Ma around the Permian-Triassic boundary. This volcanism can now be considered as the effusive terms of the neighboring and coeval La Esperanza Plutono-Volcanic Complex. This indicates that the climax of activity of a large magmatic province in northern Patagonia was coetaneous with the end-Permian mass extinctions. Likely correlation of La Esperanza- Los Menucos magmatic province with similar volcanic and plutonic rocks across other areas of northern Patagonia suggest a much larger extension than previously envisaged for this event. Its age, large volume and explosive nature suggest that the previously ignored potential role that this volcanism might have played in climatic deterioration around the Permian-Triassic boundary should be investigated.en_AU
dc.description.sponsorshipFinancial support for these investigations came from the Agencia Nacional de Investigaciones Científicas y Tecnicas (Argentina) through grants PICT2013-1162 to M.G.L.L. and PICT2015-206 to A.E.R. Tom as Luppo thanks CONICET for a 5-year Doctoral scholarship and C.I.M.D. would like to thank Fundaleu (Fundacion para la lucha contra la Leucemia).en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0895-9811en_AU
dc.identifier.urihttp://hdl.handle.net/1885/251432
dc.language.isoen_AUen_AU
dc.publisherElsevier Ltden_AU
dc.rights© 2018 Elsevier Ltden_AU
dc.sourceJournal of South American Earth Sciencesen_AU
dc.titleGeochronologic evidence of a large magmatic province in northern Patagonia encompassing the Permian-Triassic boundaryen_AU
dc.typeJournal articleen_AU
local.bibliographicCitation.lastpage355en_AU
local.bibliographicCitation.startpage346en_AU
local.contributor.affiliationLuppo, Tomas, Universidad de Buenos Airesen_AU
local.contributor.affiliationLopez de Luchi, M.G., Universidad de Buenos Airesen_AU
local.contributor.affiliationRapalini, A.E., Universidad de Buenos Airesen_AU
local.contributor.affiliationMartinez Dopico, Carmen I, Universidad de Buenos Airesen_AU
local.contributor.affiliationFanning, Christopher, College of Science, ANUen_AU
local.contributor.authoremailu4029993@anu.edu.auen_AU
local.contributor.authoruidFanning, Christopher, u4029993en_AU
local.description.embargo2099-12-31
local.description.notesImported from ARIESen_AU
local.identifier.absfor040303 - Geochronologyen_AU
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciencesen_AU
local.identifier.ariespublicationu4485658xPUB2197en_AU
local.identifier.citationvolume82en_AU
local.identifier.doi10.1016/j.jsames.2018.01.003en_AU
local.identifier.scopusID2-s2.0-85041617581
local.identifier.thomsonID000427338600023
local.identifier.uidSubmittedByu4485658en_AU
local.publisher.urlhttps://www.elsevier.com/en-auen_AU
local.type.statusPublished Versionen_AU

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