Late Pleistocene-Holocene volcanic activity in northern Victoria Land recorded in Ross Sea (Antarctica) marine sediments.

Eight pyroclastic fall deposits have been identified in cores of Late Pleistocene-Holocene marine sediments from the Ross Sea (Antarctica), and their components, granulometry and clast morphologies were analysed. Sedimentological, petrographic and geochemical analysis of clasts, with 40Ar-39Ar datin...

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Bibliographic Details
Published in:Bulletin of Volcanology
Main Authors: Del Carlo, P., Di Roberto, A., Di Vincenzo, G., Bertagnini, A., Landi, P., Pompilio, M., Colizza, E., Giordano, G.
Other Authors: Del Carlo, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia, Di Roberto, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia, Di Vincenzo, G.; IGG CNR Pisa, Bertagnini, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia, Landi, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia, Pompilio, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia, Colizza, E.; Università di Trieste, Giordano, G.; Università Roma 3, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia, IGG CNR Pisa, Università di Trieste, Università Roma 3
Format: Article in Journal/Newspaper
Language:English
Published: Springer Berlin Heidelberg 2015
Subjects:
Antarctica . Melbourne volcanic province . Gravity cores . Marine tephra . 40Ar-39Ar dating
05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions
Antarctic
Frontier Mountain
Mount Melbourne
Ross Sea
Victoria Land
Antarc*
Antarctica
Online Access:http://hdl.handle.net/2122/9851
https://doi.org/10.1007/s00445-015-0924-0
Description
Summary:Eight pyroclastic fall deposits have been identified in cores of Late Pleistocene-Holocene marine sediments from the Ross Sea (Antarctica), and their components, granulometry and clast morphologies were analysed. Sedimentological, petrographic and geochemical analysis of clasts, with 40Ar-39Ar dating of alkali feldspar grains, indicate that during this period at least five explosive eruptions of mid to high intensity (plinian to subplinian) occurred, and that three of these eruptions took place from Mount Melbourne volcanic complex, between 137.1 ± 3.4 and 12 ka. Geochemical comparison of the studied tephra with microand crypto-tephra recovered from deep Antarctic ice cores and from nearby englacial tephra at Frontier Mountain indicates that eruptive activity in the Melbourne Volcanic Province of northern Victoria Land was intense during the Late Pleistocene-Holocene, but only a general area of provenance for the majority of the identified tephra can be identified. Published 36 1V. Storia e struttura dei sistemi vulcanici JCR Journal restricted

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