Fast magma ascent, revised estimates from the deglaciation of Iceland ...
Partial melting of asthenospheric mantle generates magma that supplies volcanic systems. The timescale of melt extraction from the mantle has been hotly debated. Microstructural measurements of permeability typically suggest relatively slow melt extraction (1 m/yr) whereas geochemical (Uranium-decay...
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ftdatacite:10.17863/cam.58105 2024-02-04T10:01:24+01:00 Fast magma ascent, revised estimates from the deglaciation of Iceland ... Rees Jones, DW Rudge, JF 2020 https://dx.doi.org/10.17863/cam.58105 https://www.repository.cam.ac.uk/handle/1810/311015 en eng Elsevier BV open.access Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 http://purl.org/coar/access_right/c_abf2 magma migration magma velocity mid-ocean ridges Iceland deglaciation Article ScholarlyArticle JournalArticle article-journal 2020 ftdatacite https://doi.org/10.17863/cam.58105 2024-01-05T14:24:00Z Partial melting of asthenospheric mantle generates magma that supplies volcanic systems. The timescale of melt extraction from the mantle has been hotly debated. Microstructural measurements of permeability typically suggest relatively slow melt extraction (1 m/yr) whereas geochemical (Uranium-decay series) and geophysical observations suggest much faster melt extraction (100 m/yr). The deglaciation of Iceland triggered additional mantle melting and magma flux at the surface. The rapid response has been used to argue for relatively rapid melt extraction. However, this episode must, at least to some extent, be unrepresentative, because the rates of magma eruption at the surface increased about thirty-fold relative to the steady state. Our goal is to quantify this unrepresentativeness. We develop a one-dimensional, time-dependent and nonlinear (far from steady-state), model forced by the most recent, and best mapped, Icelandic deglaciation. We find that 30 m/yr is the best estimate of the steady-state maximum ... Article in Journal/Newspaper Iceland DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
magma migration magma velocity mid-ocean ridges Iceland deglaciation |
spellingShingle |
magma migration magma velocity mid-ocean ridges Iceland deglaciation Rees Jones, DW Rudge, JF Fast magma ascent, revised estimates from the deglaciation of Iceland ... |
topic_facet |
magma migration magma velocity mid-ocean ridges Iceland deglaciation |
description |
Partial melting of asthenospheric mantle generates magma that supplies volcanic systems. The timescale of melt extraction from the mantle has been hotly debated. Microstructural measurements of permeability typically suggest relatively slow melt extraction (1 m/yr) whereas geochemical (Uranium-decay series) and geophysical observations suggest much faster melt extraction (100 m/yr). The deglaciation of Iceland triggered additional mantle melting and magma flux at the surface. The rapid response has been used to argue for relatively rapid melt extraction. However, this episode must, at least to some extent, be unrepresentative, because the rates of magma eruption at the surface increased about thirty-fold relative to the steady state. Our goal is to quantify this unrepresentativeness. We develop a one-dimensional, time-dependent and nonlinear (far from steady-state), model forced by the most recent, and best mapped, Icelandic deglaciation. We find that 30 m/yr is the best estimate of the steady-state maximum ... |
format |
Article in Journal/Newspaper |
author |
Rees Jones, DW Rudge, JF |
author_facet |
Rees Jones, DW Rudge, JF |
author_sort |
Rees Jones, DW |
title |
Fast magma ascent, revised estimates from the deglaciation of Iceland ... |
title_short |
Fast magma ascent, revised estimates from the deglaciation of Iceland ... |
title_full |
Fast magma ascent, revised estimates from the deglaciation of Iceland ... |
title_fullStr |
Fast magma ascent, revised estimates from the deglaciation of Iceland ... |
title_full_unstemmed |
Fast magma ascent, revised estimates from the deglaciation of Iceland ... |
title_sort |
fast magma ascent, revised estimates from the deglaciation of iceland ... |
publisher |
Elsevier BV |
publishDate |
2020 |
url |
https://dx.doi.org/10.17863/cam.58105 https://www.repository.cam.ac.uk/handle/1810/311015 |
genre |
Iceland |
genre_facet |
Iceland |
op_rights |
open.access Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.17863/cam.58105 |
_version_ |
1789967257257902080 |