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<title lang=en>New archeomagnetic and Ra-226-Th-230 dating of recent lavas for the Geological map of Etna volcano</title>
<creator>Tanguy, Jean-Claude</creator>
<creator>Condomines, Michel</creator>
<creator>Branca, Stefano</creator>
<creator>La Delfa, Santo</creator>
<creator>Coltelli, Mauro</creator>
<contributor>Institut de Physique du Globe de Paris (IPGP) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Institut national des sciences de l'Univers (INSU - CNRS) - IPG PARIS - Université Paris Diderot - Paris 7 (UPD7) - Université de la Réunion (UR) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Dynamique de la Lithosphere ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, Catania ; Université du Québec</contributor>
<contributor>Dipartimento di Scienze Geologiche, Università di Catania ; Université du Québec</contributor>
<source>Italian Journal of Geosciences</source>
<identifier>hal-00758077</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00758077</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00758077</source>
<source>Italian Journal of Geosciences, 2012, 131 (2), pp.241-257. 〈10.3301/IJG.2012.01〉</source>
<identifier>DOI : 10.3301/IJG.2012.01</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.3301/IJG.2012.01</relation>
<language>en</language>
<subject lang=it>Etna volcano</subject>
<subject lang=it>archeomagnetic dating</subject>
<subject lang=it>Ra-226-Th-23 dating</subject>
<subject lang=it>stratigraphy</subject>
<subject lang=it>historical account</subject>
<subject>[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>This work deals with the dating of Mount Etna lava flows and eruptive fissure deposits to the last four millennia following field investigations and stratigraphic data (BRANCA et alii, 2011a). We have studied 24 of these volcanic products, including 301 large samples, through high precision archeomagnetic dating checked by 226Ra-230Th radiochronology, thus providing additional material to the previous paper by TANGUY et alii (2007). In most cases our results allow attributing ages to the historical period, although two flows are shown to be prehistoric. For the historic lavas, archeoma - gnetic ages can be defined within decades, except for three of them that erupted during a time span (Greco-Roman epoch) when the geomagnetic field underwent little variation. Although 60% of these volcanics exhibit ages comprised between 700 AD and 1850, only one (1285) is mentioned by contemporary written accounts. We conclude that i) historical documents alone are insufficient to reconstruct a coherent sequence of eruptions, and ii) a multidisciplinary approach is necessary to obtain a comprehensive eruptive history of such a very active volcano, useful for both scientific and civil protection purposes, even for such a geologically recent period as that of the last 10 or 20 centuries. Thanks to these new archeomagnetic and 226Ra-230Th data coupled with stratigraphic data, a comprehensive volcanic history of the still-outcropping Mount Etna volcanics is now available for the last 2,400 years. KEY WORDS: Etna volcano, archeomagnetic dating, 226Ra- 230Th dating, stratigraphy, historical account.</description>
<date>2012-06</date>
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