000132429 001__ 132429
000132429 005__ 20241125101144.0
000132429 0247_ $$2doi$$a10.1016/j.jsames.2023.104745
000132429 0248_ $$2sideral$$a137625
000132429 037__ $$aART-2023-137625
000132429 041__ $$aeng
000132429 100__ $$aBáez, W.
000132429 245__ $$aRevisiting the Holocene tephrochronology of northwestern Argentina: Insights from geochemical characterization of the tephras from the Tafí valley
000132429 260__ $$c2023
000132429 5060_ $$aAccess copy available to the general public$$fUnrestricted
000132429 5203_ $$aIn the southernmost sector of the Central Volcanic Zone (CVZ), spanning from 23◦ to 28◦S, there is an estimated count of 30–40 potentially active volcanoes. Due to its remote location, the primary volcanic threat in this area during explosive eruptions is the dispersal and fallout of tephra. Among various approaches, tephrochronological studies have proven to be the most effective in compiling a comprehensive record of recent explosive eruptions in this region. The intermontane valleys nestled at the eastern foothills of the Andes, situated around 200–300 km from the volcanic arc, harbor a Holocene stratigraphic record containing multiple layers of tephra. These layers are evidence of the recurrence of substantial volcanic eruptions (VEI ≥4) during recent times, particularly with in the last 10,000 years. Improving the tephrochronological knowledge of the southernmost edge of the CVZ constitutes a crucial initial step in evaluating the ash-fall hazard of this region. In this context, the Tafí valley emerges as a prominent candidate for serving as a dependable tephrochronological "anchor point" for regional correlations. Its strength lies in its conspicuous record of Holocene tephras and its well-documented morpho-stratigraphic setting, which has been rigorously constrained by absolute age dating. Despite these advantages, some of the Holocene tephras found within Tafí valley remain uncharacterized in terms of both glass shard and mineral geochemistry. This limitation has consequently hindered their utility in facilitating regional correlations. Thus, we present the glass shard and mineral composition of these uncharacterized Holocene tephras previously identified within Tafí valley. Our findings have not only enhanced regional correlations beyond the Tafí valley but have also provided more precise source constraints. Ultimately, our work represents an upgrade of the Holocene tephrochronological framework of Northwestern Argentina and a stride toward a more reliable assessment of volcanic hazard and risk within the region
000132429 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000132429 590__ $$a1.7$$b2023
000132429 592__ $$a0.638$$b2023
000132429 591__ $$aGEOSCIENCES, MULTIDISCIPLINARY$$b155 / 254 = 0.61$$c2023$$dQ3$$eT2
000132429 593__ $$aGeology$$c2023$$dQ2
000132429 593__ $$aEarth-Surface Processes$$c2023$$dQ2
000132429 594__ $$a3.7$$b2023
000132429 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000132429 700__ $$aBardelli, L.
000132429 700__ $$aSampietro-Vattuone, M.M.
000132429 700__ $$0(orcid)0000-0003-4067-8222$$aPeña Monné, J.L.$$uUniversidad de Zaragoza
000132429 700__ $$aBertea, E.
000132429 700__ $$aCirer, M.
000132429 7102_ $$13006$$2430$$aUniversidad de Zaragoza$$bDpto. Geograf. Ordenac.Territ.$$cÁrea Geografía Física
000132429 773__ $$g134 (2023), 104745$$pJ. South Am. earth sci.$$tJOURNAL OF SOUTH AMERICAN EARTH SCIENCES$$x0895-9811
000132429 8564_ $$s16235959$$uhttps://zaguan.unizar.es/record/132429/files/texto_completo.pdf$$yVersión publicada
000132429 8564_ $$s2478486$$uhttps://zaguan.unizar.es/record/132429/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000132429 909CO $$ooai:zaguan.unizar.es:132429$$particulos$$pdriver
000132429 951__ $$a2024-11-22-12:03:40
000132429 980__ $$aARTICLE