Physics of melt extraction from the mantle : speed and style
Funding: This research received funding from the European Research Council under Horizon 2020 research and innovation program grant agreement number 772255. The authors thank the Isaac Newton Institute for Mathematical Sciences for its hospitality during the programme Melt in the Mantle which was su...
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/25033 2024-05-19T07:43:01+00:00 Physics of melt extraction from the mantle : speed and style Katz, Richard F. Rees Jones, David W. Rudge, John F. Keller, Tobias University of St Andrews. Applied Mathematics 2022-03-11T16:30:02Z 34 12153529 application/pdf https://hdl.handle.net/10023/25033 https://doi.org/10.1146/annurev-earth-032320-083704 http://www.annualreviews.org/eprint/FQQHQJSEXNDU3EXPTEVD/full/10.1146/annurev-earth-032320-083704 eng eng Annual Review of Earth and Planetary Sciences 277521663 5d40b59d-723d-4489-8c81-b5ec54988c22 85132307365 000804955000021 Katz , R F , Rees Jones , D W , Rudge , J F & Keller , T 2022 , ' Physics of melt extraction from the mantle : speed and style ' , Annual Review of Earth and Planetary Sciences , vol. 50 , pp. 508-540 . https://doi.org/10.1146/annurev-earth-032320-083704 0084-6597 ORCID: /0000-0001-8698-401X/work/109766889 https://hdl.handle.net/10023/25033 doi:10.1146/annurev-earth-032320-083704 http://www.annualreviews.org/eprint/FQQHQJSEXNDU3EXPTEVD/full/10.1146/annurev-earth-032320-083704 Magma Asthenosphere Rheology Partial melting Channelization Dunite Rock microstructure Mid-ocean ridge Subduction QC Physics QE Geology NDAS QC QE Journal article 2022 ftstandrewserep https://doi.org/10.1146/annurev-earth-032320-083704 2024-04-30T23:32:55Z Funding: This research received funding from the European Research Council under Horizon 2020 research and innovation program grant agreement number 772255. The authors thank the Isaac Newton Institute for Mathematical Sciences for its hospitality during the programme Melt in the Mantle which was supported by EPSRC Grant Number EP/K032208/1. Melt extraction from the partially molten mantle is among the fundamental processes shaping the solid Earth today and over geological time. A diversity of properties and mechanisms contribute to the physics of melt extraction. We review progress of the past ∼25 years of research in this area, with a focus on understanding the speed and style of buoyancy-driven melt extraction. Observations of U-series disequilibria in young lavas and the surge of deglacial volcanism in Iceland suggest this speed is rapid compared to that predicted by the null hypothesis of diffuse porous flow. The discrepancy indicates that the style of extraction is channelized. We discuss how channelization is sensitive to mechanical and thermochemical properties and feedbacks, and to asthenospheric heterogeneity. We review the grain-scale physics that underpins these properties and hence determines the physical behavior at much larger scales. We then discuss how the speed of melt extraction is crucial to predicting the magmatic response to glacial and sea-level variations. Finally, we assess the frontier of current research and identify areas where significant advances are expected over the next 25 years. In particular, we highlight the coupling of melt extraction with more realistic models of mantle thermochemistry and rheological properties. This coupling will be crucial in understanding complex settings such as subduction zones. ▪ Mantle melt extraction shapes Earth today and over geological time. ▪ Observations, lab experiments, and theory indicate that melt ascends through the mantle at speeds ∼30 m/year by reactively channelized porous flow. ▪ Variations in sea level and glacial ice loading can ... Article in Journal/Newspaper Iceland University of St Andrews: Digital Research Repository Annual Review of Earth and Planetary Sciences 50 1 507 540 |
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Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
Magma Asthenosphere Rheology Partial melting Channelization Dunite Rock microstructure Mid-ocean ridge Subduction QC Physics QE Geology NDAS QC QE |
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Magma Asthenosphere Rheology Partial melting Channelization Dunite Rock microstructure Mid-ocean ridge Subduction QC Physics QE Geology NDAS QC QE Katz, Richard F. Rees Jones, David W. Rudge, John F. Keller, Tobias Physics of melt extraction from the mantle : speed and style |
topic_facet |
Magma Asthenosphere Rheology Partial melting Channelization Dunite Rock microstructure Mid-ocean ridge Subduction QC Physics QE Geology NDAS QC QE |
description |
Funding: This research received funding from the European Research Council under Horizon 2020 research and innovation program grant agreement number 772255. The authors thank the Isaac Newton Institute for Mathematical Sciences for its hospitality during the programme Melt in the Mantle which was supported by EPSRC Grant Number EP/K032208/1. Melt extraction from the partially molten mantle is among the fundamental processes shaping the solid Earth today and over geological time. A diversity of properties and mechanisms contribute to the physics of melt extraction. We review progress of the past ∼25 years of research in this area, with a focus on understanding the speed and style of buoyancy-driven melt extraction. Observations of U-series disequilibria in young lavas and the surge of deglacial volcanism in Iceland suggest this speed is rapid compared to that predicted by the null hypothesis of diffuse porous flow. The discrepancy indicates that the style of extraction is channelized. We discuss how channelization is sensitive to mechanical and thermochemical properties and feedbacks, and to asthenospheric heterogeneity. We review the grain-scale physics that underpins these properties and hence determines the physical behavior at much larger scales. We then discuss how the speed of melt extraction is crucial to predicting the magmatic response to glacial and sea-level variations. Finally, we assess the frontier of current research and identify areas where significant advances are expected over the next 25 years. In particular, we highlight the coupling of melt extraction with more realistic models of mantle thermochemistry and rheological properties. This coupling will be crucial in understanding complex settings such as subduction zones. ▪ Mantle melt extraction shapes Earth today and over geological time. ▪ Observations, lab experiments, and theory indicate that melt ascends through the mantle at speeds ∼30 m/year by reactively channelized porous flow. ▪ Variations in sea level and glacial ice loading can ... |
author2 |
University of St Andrews. Applied Mathematics |
format |
Article in Journal/Newspaper |
author |
Katz, Richard F. Rees Jones, David W. Rudge, John F. Keller, Tobias |
author_facet |
Katz, Richard F. Rees Jones, David W. Rudge, John F. Keller, Tobias |
author_sort |
Katz, Richard F. |
title |
Physics of melt extraction from the mantle : speed and style |
title_short |
Physics of melt extraction from the mantle : speed and style |
title_full |
Physics of melt extraction from the mantle : speed and style |
title_fullStr |
Physics of melt extraction from the mantle : speed and style |
title_full_unstemmed |
Physics of melt extraction from the mantle : speed and style |
title_sort |
physics of melt extraction from the mantle : speed and style |
publishDate |
2022 |
url |
https://hdl.handle.net/10023/25033 https://doi.org/10.1146/annurev-earth-032320-083704 http://www.annualreviews.org/eprint/FQQHQJSEXNDU3EXPTEVD/full/10.1146/annurev-earth-032320-083704 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Annual Review of Earth and Planetary Sciences 277521663 5d40b59d-723d-4489-8c81-b5ec54988c22 85132307365 000804955000021 Katz , R F , Rees Jones , D W , Rudge , J F & Keller , T 2022 , ' Physics of melt extraction from the mantle : speed and style ' , Annual Review of Earth and Planetary Sciences , vol. 50 , pp. 508-540 . https://doi.org/10.1146/annurev-earth-032320-083704 0084-6597 ORCID: /0000-0001-8698-401X/work/109766889 https://hdl.handle.net/10023/25033 doi:10.1146/annurev-earth-032320-083704 http://www.annualreviews.org/eprint/FQQHQJSEXNDU3EXPTEVD/full/10.1146/annurev-earth-032320-083704 |
op_doi |
https://doi.org/10.1146/annurev-earth-032320-083704 |
container_title |
Annual Review of Earth and Planetary Sciences |
container_volume |
50 |
container_issue |
1 |
container_start_page |
507 |
op_container_end_page |
540 |
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1799482720688013312 |