Exhumed conduit records magma ascent and drain-back during a Strombolian eruption at Tongariro volcano, New Zealand
Field evidence from a basaltic-andesite dyke preserved in the eroded wall of a scoria cone at Red Crater, Tongariro volcano, New Zealand, records a history of up-conduit magma flow during a Strombolian eruption, subsequent drain-back and final cessation of flow. The dyke intrudes pre-Strombolian and...
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Springer-Verlag Berlin Heidelberg
2016
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Online Access: | http://link.springer.com/article/10.1007%2Fs00445-015-0962-7 http://hdl.handle.net/2381/37982 https://doi.org/10.1007/s00445-015-0962-7 |
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ftleicester:oai:lra.le.ac.uk:2381/37982 2023-05-15T13:31:55+02:00 Exhumed conduit records magma ascent and drain-back during a Strombolian eruption at Tongariro volcano, New Zealand Wadsworth, Fabian B. Kennedy, Ben M. Branney, Michael J. von Aulock, Felix W. Lavallee, Yan Menendez, Amaya 2016-08-16T13:04:46Z http://link.springer.com/article/10.1007%2Fs00445-015-0962-7 http://hdl.handle.net/2381/37982 https://doi.org/10.1007/s00445-015-0962-7 en eng Springer-Verlag Berlin Heidelberg Bulletin of Volcanology, 2015, 77:71 0258-8900 http://link.springer.com/article/10.1007%2Fs00445-015-0962-7 http://hdl.handle.net/2381/37982 doi:10.1007/s00445-015-0962-7 1432-0819 Copyright © Springer-Verlag Berlin Heidelberg 2015. This version of this article is distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/ ), which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. CC-BY-NC-ND Science & Technology Physical Sciences Geosciences Multidisciplinary Geology Drain-back Conduit processes Basaltic-andesite Kinematic indicators Dyke emplacement Magma flow LAVA LAKES BASALTIC ERUPTIONS EREBUS VOLCANO ERTA-ALE DYNAMICS FLOW DIKE ANTARCTICA GENERATION PETROLOGY Journal Article Article;Journal 2016 ftleicester https://doi.org/10.1007/s00445-015-0962-7 2019-03-22T20:21:50Z Field evidence from a basaltic-andesite dyke preserved in the eroded wall of a scoria cone at Red Crater, Tongariro volcano, New Zealand, records a history of up-conduit magma flow during a Strombolian eruption, subsequent drain-back and final cessation of flow. The dyke intrudes pre-Strombolian andesite lavas, and the overlying proximal basaltic-andesite scoria deposits associated with contemporaneous lavas, which are, in turn overlain by laminated lapilli-tuff and large blocks. Textural and kinematic evidence of ductile shear recorded in basaltic andesite at the dyke margins records magma deformation imposed by bypassing movement of magma up the centre of the conduit during the eruption, whereas the basaltic andesite occupying the central part of the lowermost exposures of the dyke preserves ductile flow-folds with the opposite (down-flow) shear sense. The evidence indicates that the downward magma flow followed the eruption, and this draining left the central part of the dyke empty (unfilled) at uppermost levels. We discuss the kinematic constraints in the context of the criteria for up-flow of mafic magma and present the factors most likely to result in a final drain-back event. With reference to experimental and numerical work, we propose a draining model for the end of this eruption, and that magmatic drain-back may feature commonly during closing stages of Strombolian eruptions at mafic volcanoes. Drain-back which leaves large cavities in a volcanic edifice could result in hazardous structural instabilities. Peer-reviewed Post-print Article in Journal/Newspaper Antarc* Antarctica University of Leicester: Leicester Research Archive (LRA) Erta ENVELOPE(27.142,27.142,-71.670,-71.670) Lava Lakes ENVELOPE(-130.904,-130.904,56.433,56.433) New Zealand Bulletin of Volcanology 77 9 |
institution |
Open Polar |
collection |
University of Leicester: Leicester Research Archive (LRA) |
op_collection_id |
ftleicester |
language |
English |
topic |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology Drain-back Conduit processes Basaltic-andesite Kinematic indicators Dyke emplacement Magma flow LAVA LAKES BASALTIC ERUPTIONS EREBUS VOLCANO ERTA-ALE DYNAMICS FLOW DIKE ANTARCTICA GENERATION PETROLOGY |
spellingShingle |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology Drain-back Conduit processes Basaltic-andesite Kinematic indicators Dyke emplacement Magma flow LAVA LAKES BASALTIC ERUPTIONS EREBUS VOLCANO ERTA-ALE DYNAMICS FLOW DIKE ANTARCTICA GENERATION PETROLOGY Wadsworth, Fabian B. Kennedy, Ben M. Branney, Michael J. von Aulock, Felix W. Lavallee, Yan Menendez, Amaya Exhumed conduit records magma ascent and drain-back during a Strombolian eruption at Tongariro volcano, New Zealand |
topic_facet |
Science & Technology Physical Sciences Geosciences Multidisciplinary Geology Drain-back Conduit processes Basaltic-andesite Kinematic indicators Dyke emplacement Magma flow LAVA LAKES BASALTIC ERUPTIONS EREBUS VOLCANO ERTA-ALE DYNAMICS FLOW DIKE ANTARCTICA GENERATION PETROLOGY |
description |
Field evidence from a basaltic-andesite dyke preserved in the eroded wall of a scoria cone at Red Crater, Tongariro volcano, New Zealand, records a history of up-conduit magma flow during a Strombolian eruption, subsequent drain-back and final cessation of flow. The dyke intrudes pre-Strombolian andesite lavas, and the overlying proximal basaltic-andesite scoria deposits associated with contemporaneous lavas, which are, in turn overlain by laminated lapilli-tuff and large blocks. Textural and kinematic evidence of ductile shear recorded in basaltic andesite at the dyke margins records magma deformation imposed by bypassing movement of magma up the centre of the conduit during the eruption, whereas the basaltic andesite occupying the central part of the lowermost exposures of the dyke preserves ductile flow-folds with the opposite (down-flow) shear sense. The evidence indicates that the downward magma flow followed the eruption, and this draining left the central part of the dyke empty (unfilled) at uppermost levels. We discuss the kinematic constraints in the context of the criteria for up-flow of mafic magma and present the factors most likely to result in a final drain-back event. With reference to experimental and numerical work, we propose a draining model for the end of this eruption, and that magmatic drain-back may feature commonly during closing stages of Strombolian eruptions at mafic volcanoes. Drain-back which leaves large cavities in a volcanic edifice could result in hazardous structural instabilities. Peer-reviewed Post-print |
format |
Article in Journal/Newspaper |
author |
Wadsworth, Fabian B. Kennedy, Ben M. Branney, Michael J. von Aulock, Felix W. Lavallee, Yan Menendez, Amaya |
author_facet |
Wadsworth, Fabian B. Kennedy, Ben M. Branney, Michael J. von Aulock, Felix W. Lavallee, Yan Menendez, Amaya |
author_sort |
Wadsworth, Fabian B. |
title |
Exhumed conduit records magma ascent and drain-back during a Strombolian eruption at Tongariro volcano, New Zealand |
title_short |
Exhumed conduit records magma ascent and drain-back during a Strombolian eruption at Tongariro volcano, New Zealand |
title_full |
Exhumed conduit records magma ascent and drain-back during a Strombolian eruption at Tongariro volcano, New Zealand |
title_fullStr |
Exhumed conduit records magma ascent and drain-back during a Strombolian eruption at Tongariro volcano, New Zealand |
title_full_unstemmed |
Exhumed conduit records magma ascent and drain-back during a Strombolian eruption at Tongariro volcano, New Zealand |
title_sort |
exhumed conduit records magma ascent and drain-back during a strombolian eruption at tongariro volcano, new zealand |
publisher |
Springer-Verlag Berlin Heidelberg |
publishDate |
2016 |
url |
http://link.springer.com/article/10.1007%2Fs00445-015-0962-7 http://hdl.handle.net/2381/37982 https://doi.org/10.1007/s00445-015-0962-7 |
long_lat |
ENVELOPE(27.142,27.142,-71.670,-71.670) ENVELOPE(-130.904,-130.904,56.433,56.433) |
geographic |
Erta Lava Lakes New Zealand |
geographic_facet |
Erta Lava Lakes New Zealand |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Bulletin of Volcanology, 2015, 77:71 0258-8900 http://link.springer.com/article/10.1007%2Fs00445-015-0962-7 http://hdl.handle.net/2381/37982 doi:10.1007/s00445-015-0962-7 1432-0819 |
op_rights |
Copyright © Springer-Verlag Berlin Heidelberg 2015. This version of this article is distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/ ), which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1007/s00445-015-0962-7 |
container_title |
Bulletin of Volcanology |
container_volume |
77 |
container_issue |
9 |
_version_ |
1766022408288862208 |