Open Access Repository

The medial offshore record of explosive volcanism along the central to eastern Aegean Volcanic Arc, part 2: Tephra ages and volumes, eruption magnitudes and marine sedimentation rate variations

Downloads

Downloads per month over past year

Kutterolf, S, Freundt, A, Druitt, TH, McPhie, J, Nomikou, P, Pank, K, Schindlbeck-Belo, JC, Hansteen, TH and Allen, S 2021 , 'The medial offshore record of explosive volcanism along the central to eastern Aegean Volcanic Arc, part 2: Tephra ages and volumes, eruption magnitudes and marine sedimentation rate variations' , Geochemistry, Geophysics, Geosystems , doi: 10.1029/2021GC010011.

[img]
Preview
PDF (Post-print)
148320 - The me...pdf | Download (12MB)

| Preview

Abstract

We use the tephrostratigraphic framework along the Aegean Volcanic Arc established in part 1 of this contribution to determine hemipelagic sedimentation rates, calculate new tephra ages, and constrain the minimum magnitudes of (sub)plinian eruptions of thelast 200 kyrs. Hemipelagic sedimentation rates range from ~0.5 cm/kyr up to ~40 cm/kyr and vary laterally as well as over time. Interpolation between dated tephras yields an eruption age of ~37 ka for the Firiplaka tephra, showing that explosive volcanism on Milos is ~24 kyrs younger than previously thought. The four marine Nisyros tephras (N1 to N4) identified in part 1 (including the Upper (N1) and Lower (N4) Pumice) have ages of ~57 ka, ~63 ka, ~69 ka, and ~76 ka, respectively. Eruption ages for the Yali-1 and Yali-2 tephras are ~55ka and ~34 ka, respectively. The Yali-2 tephra comprises two geochemically and laterally distinct marine facies. The southern facies is identical to the Yali-2 fall deposit on land but the western facies has slightly less evolved glass compositions. Overall, erupted plinian and co-ignimbrite fall tephra volumes range from 3 (excluding possible caldera fillings and ignimbite volumes), and 80% of the eruptions had magnitude 5.5

Item Type: Article
Authors/Creators:Kutterolf, S and Freundt, A and Druitt, TH and McPhie, J and Nomikou, P and Pank, K and Schindlbeck-Belo, JC and Hansteen, TH and Allen, S
Keywords: tephrostratigraphy, Aegean Arc, chemical fingerprinting, volcanology
Journal or Publication Title: Geochemistry, Geophysics, Geosystems
Publisher: Amer Geophysical Union
ISSN: 1525-2027
DOI / ID Number: 10.1029/2021GC010011
Copyright Information:

© 2021. The Authors. This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License, (https://creativecommons.org/licenses/by/4.0/) which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Related URLs:
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP