Chrono-stratigraphy of the youngest (last 1500 years) rhyolitic eruptions of Lipari (Aeolian Islands, Southern Italy) and implications for distal tephra correlations

نویسندگان

چکیده

The youngest (last 1500 years) volcanic eruptions of Lipari, within the Aeolian Archipelago, produced prominent pumice cone Monte Pilato and obsidian lava flows Rocche Rosse Forgia Vecchia, concentrated in north-eastern sector island as well highly dispersed white-coloured, fine-grained tephra layers rhyolitic composition terrestrial marine settings on regional scale. Here we describe detail stratigraphy pyroclastic successions erupted by different vents - Pilato, Lami, combining field observations, sedimentological characteristics deposits, major trace element compositions glass. All materials consist aphyric lapilli ash with a largely homogeneous composition. Vecchia deposits primarily vesicular fragments subordinate clasts, whilst Lami are characterized moderately juvenile more significant fraction obsidian. also contains peculiar clasts fibrous texture breadcrust bombs. Stratigraphic relationships, paleomagnetic 14C ages combined archaeological information historical reports, enabling us to provide an accurate chrono-stratigraphic framework for Lipari. Following 8th century CE eruption which flow, activity resumed second half 13th explosive that culminated emission bilobate flow. This was shortly followed Rosse, latter concluded widely renowned By integrating geochemistry new chronological scheme, our work facilitates refinement proximal-to-distal correlation Lipari's continental environments central Mediterranean area last years. A fine-grained, found Stromboli (~40 km NE from Lipari) has origin thus, constrains dispersion towards NE. Very similar beds southwards interlayered near-source La Fossa, Vulcano (~10 exhibit features consistent younger activities eruption. possible link between previously identified cores Ionian Sea postulated, although age textural these distal not univocal indicating either or Vecchia.

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ژورنال

عنوان ژورنال: Journal of Volcanology and Geothermal Research

سال: 2021

ISSN: ['0377-0273', '1872-6097']

DOI: https://doi.org/10.1016/j.jvolgeores.2021.107397