Rapid transcrustal magma movement under Iceland ...
Magma supply from the lower crust is often proposed as a trigger mechanism for volcanic eruptions. The timescales over which magma can be transported from the deepest parts of volcanic systems are, however, poorly constrained. This uncertainty poses problems for the construction of physical models a...
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ftdatacite:10.17863/cam.41468 2024-02-27T08:41:55+00:00 Rapid transcrustal magma movement under Iceland ... Mutch, Euan JF Maclennan, John Shorttle, Oliver Edmonds, Marie Rudge, John F 2019 https://dx.doi.org/10.17863/cam.41468 https://www.repository.cam.ac.uk/handle/1810/294367 en eng Springer-Nature open.access All rights reserved http://purl.org/coar/access_right/c_abf2 37 Earth Sciences 3703 Geochemistry 3705 Geology 3706 Geophysics article-journal ScholarlyArticle JournalArticle Article 2019 ftdatacite https://doi.org/10.17863/cam.41468 2024-02-01T14:55:31Z Magma supply from the lower crust is often proposed as a trigger mechanism for volcanic eruptions. The timescales over which magma can be transported from the deepest parts of volcanic systems are, however, poorly constrained. This uncertainty poses problems for the construction of physical models and for assessment of volcanic hazards. Here, we combined geothermobarometry with Bayesian inversion diffusion chronometry on primitive olivine crystals from the Borgarhraun eruption, northern Iceland. We find that magma took about 10 days to ascend from near-Moho storage at 24 km depth before its eruption, and therefore present timescales for transcrustal magma transport on the global spreading ridge system. Our results reveal a rapid connection between the lower and upper crust with melt transport rates of 0.02 to 0.1 m s−1, which are consistent with the propagation rates observed in seismic swarms in the Icelandic lower crust. Monitoring of such events using surface CO2 fluxes may provide one of the earliest ... Article in Journal/Newspaper Iceland DataCite Metadata Store (German National Library of Science and Technology) Borgarhraun ENVELOPE(-17.022,-17.022,65.810,65.810) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
37 Earth Sciences 3703 Geochemistry 3705 Geology 3706 Geophysics |
spellingShingle |
37 Earth Sciences 3703 Geochemistry 3705 Geology 3706 Geophysics Mutch, Euan JF Maclennan, John Shorttle, Oliver Edmonds, Marie Rudge, John F Rapid transcrustal magma movement under Iceland ... |
topic_facet |
37 Earth Sciences 3703 Geochemistry 3705 Geology 3706 Geophysics |
description |
Magma supply from the lower crust is often proposed as a trigger mechanism for volcanic eruptions. The timescales over which magma can be transported from the deepest parts of volcanic systems are, however, poorly constrained. This uncertainty poses problems for the construction of physical models and for assessment of volcanic hazards. Here, we combined geothermobarometry with Bayesian inversion diffusion chronometry on primitive olivine crystals from the Borgarhraun eruption, northern Iceland. We find that magma took about 10 days to ascend from near-Moho storage at 24 km depth before its eruption, and therefore present timescales for transcrustal magma transport on the global spreading ridge system. Our results reveal a rapid connection between the lower and upper crust with melt transport rates of 0.02 to 0.1 m s−1, which are consistent with the propagation rates observed in seismic swarms in the Icelandic lower crust. Monitoring of such events using surface CO2 fluxes may provide one of the earliest ... |
format |
Article in Journal/Newspaper |
author |
Mutch, Euan JF Maclennan, John Shorttle, Oliver Edmonds, Marie Rudge, John F |
author_facet |
Mutch, Euan JF Maclennan, John Shorttle, Oliver Edmonds, Marie Rudge, John F |
author_sort |
Mutch, Euan JF |
title |
Rapid transcrustal magma movement under Iceland ... |
title_short |
Rapid transcrustal magma movement under Iceland ... |
title_full |
Rapid transcrustal magma movement under Iceland ... |
title_fullStr |
Rapid transcrustal magma movement under Iceland ... |
title_full_unstemmed |
Rapid transcrustal magma movement under Iceland ... |
title_sort |
rapid transcrustal magma movement under iceland ... |
publisher |
Springer-Nature |
publishDate |
2019 |
url |
https://dx.doi.org/10.17863/cam.41468 https://www.repository.cam.ac.uk/handle/1810/294367 |
long_lat |
ENVELOPE(-17.022,-17.022,65.810,65.810) |
geographic |
Borgarhraun |
geographic_facet |
Borgarhraun |
genre |
Iceland |
genre_facet |
Iceland |
op_rights |
open.access All rights reserved http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.17863/cam.41468 |
_version_ |
1792049261187170304 |