Decoding links between magmatic processes and eruption dynamics: whole-rock time series petrology of the 2021 Tajogaite eruption, La Palma
We present an integrated petrological study of the 2021 Tajogaite eruption, La Palma, examining magmatic processes that initiated, sustained, and terminated surface volcanic activity. High temporal resolution sampling of near-continuously erupted alkali-basalt lava and tephra over the 85-day event r...
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| Language: | English |
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Volcanica
2024-12-01
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| Series: | Volcanica |
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| Online Access: | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/326 |
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| author | Jane H. Scarrow Matthew J. Pankhurst Olivia A. Barbee Katy J. Chamberlain Daniel J. Morgan Marc-Antoine Longpré Samantha Tramontano James Hickey David A. Neave Gavin K. Rollinson Alexander G. Stewart Penny E. Wieser Beverley C. Coldwell William Hernández Luca D’Auria Nemesio M. Pérez |
| author_facet | Jane H. Scarrow Matthew J. Pankhurst Olivia A. Barbee Katy J. Chamberlain Daniel J. Morgan Marc-Antoine Longpré Samantha Tramontano James Hickey David A. Neave Gavin K. Rollinson Alexander G. Stewart Penny E. Wieser Beverley C. Coldwell William Hernández Luca D’Auria Nemesio M. Pérez |
| author_sort | Jane H. Scarrow |
| collection | DOAJ |
| description | We present an integrated petrological study of the 2021 Tajogaite eruption, La Palma, examining magmatic processes that initiated, sustained, and terminated surface volcanic activity. High temporal resolution sampling of near-continuously erupted alkali-basalt lava and tephra over the 85-day event reveals magma plumbing system dynamics from compositional trends. Initial deposits were mineralogically varied, reflecting mobilisation of shallow, evolved mush perturbed by fresh deep, primitive magma influx (Stage 1 - initiation). Transition to more primitive, uniform compositions recorded progressively deeper tapping of pre-existing magmatic zonation (Stage 2 - evacuation). The final stage (Stage 3 - waning) was characterised by more evolved magma compositions on the same fractionation trend as Stage 2, with tephra glass compositions suggesting a proportionately larger role of mush interstitial melts. We suggest this reflects shutdown of mantle-derived magma supply, a key process in eruption waning and termination, and compression-driven melt extraction of less mobile melts. Correlation with geophysical monitoring data demonstrates how near-real-time petrological monitoring could improve understanding of when an eruption may end. |
| format | Article |
| id | doaj-art-12da30693c8d4b70bfa5d6a6e22e0c4b |
| institution | Kabale University |
| issn | 2610-3540 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Volcanica |
| record_format | Article |
| series | Volcanica |
| spelling | doaj-art-12da30693c8d4b70bfa5d6a6e22e0c4b2025-01-22T11:48:18ZengVolcanicaVolcanica2610-35402024-12-017295398010.30909/vol.07.02.953980311Decoding links between magmatic processes and eruption dynamics: whole-rock time series petrology of the 2021 Tajogaite eruption, La PalmaJane H. Scarrow0https://orcid.org/0000-0001-8585-8679Matthew J. Pankhurst1Olivia A. Barbee2https://orcid.org/0000-0002-5618-2371Katy J. Chamberlain3https://orcid.org/0000-0002-2010-6182Daniel J. Morgan4Marc-Antoine Longpré5Samantha Tramontano6https://orcid.org/0000-0002-6827-5735James Hickey7https://orcid.org/0000-0002-5391-3415David A. Neave8https://orcid.org/0000-0001-6343-2482Gavin K. Rollinson9https://orcid.org/0000-0002-0655-6304Alexander G. Stewart10https://orcid.org/0000-0002-4710-1963Penny E. Wieser11Beverley C. Coldwell12https://orcid.org/0000-0001-9240-6240William Hernández13Luca D’Auria14https://orcid.org/0000-0002-7664-2216Nemesio M. Pérez15Department of Mineralogy and Petrology, University of Granada, Granada, Spain.Gaiaxiom, Copenhagen, DenmarkXnovo Technology, Køge, Denmark.School of Environmental Sciences, University of Liverpool, Liverpool, UK.School of Earth and Environment, University of Leeds, Leeds, UK.Queens College, City University of New York, Queens, USA.American Museum of Natural History, Theodore Roosevelt Park, New York, USA.Department of Earth and Environmental Sciences, University of Exeter, Penryn, UK.Department of Earth and Environmental Sciences, University of Manchester, Manchester, UK.Department of Earth and Environmental Sciences, University of Exeter, Penryn, UK.Department of Earth and Environmental Sciences, University of Manchester, Manchester, UK.Department of Earth and Planetary Science, University of California, Berkeley, CA, USA.Instituto Volcanológico de Canarias (INVOLCAN); San Cristóbal de La Laguna, Tenerife, Spain.Instituto Volcanológico de Canarias (INVOLCAN); San Cristóbal de La Laguna, Tenerife, Spain.Instituto Volcanológico de Canarias (INVOLCAN); San Cristóbal de La Laguna, Tenerife, Spain.Instituto Volcanológico de Canarias (INVOLCAN); San Cristóbal de La Laguna, Tenerife, Spain.We present an integrated petrological study of the 2021 Tajogaite eruption, La Palma, examining magmatic processes that initiated, sustained, and terminated surface volcanic activity. High temporal resolution sampling of near-continuously erupted alkali-basalt lava and tephra over the 85-day event reveals magma plumbing system dynamics from compositional trends. Initial deposits were mineralogically varied, reflecting mobilisation of shallow, evolved mush perturbed by fresh deep, primitive magma influx (Stage 1 - initiation). Transition to more primitive, uniform compositions recorded progressively deeper tapping of pre-existing magmatic zonation (Stage 2 - evacuation). The final stage (Stage 3 - waning) was characterised by more evolved magma compositions on the same fractionation trend as Stage 2, with tephra glass compositions suggesting a proportionately larger role of mush interstitial melts. We suggest this reflects shutdown of mantle-derived magma supply, a key process in eruption waning and termination, and compression-driven melt extraction of less mobile melts. Correlation with geophysical monitoring data demonstrates how near-real-time petrological monitoring could improve understanding of when an eruption may end.https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/326lava, tephra, and glass time seriespetrological monitoringforecasting and hindcastingmush mobilisationfilter pressing |
| spellingShingle | Jane H. Scarrow Matthew J. Pankhurst Olivia A. Barbee Katy J. Chamberlain Daniel J. Morgan Marc-Antoine Longpré Samantha Tramontano James Hickey David A. Neave Gavin K. Rollinson Alexander G. Stewart Penny E. Wieser Beverley C. Coldwell William Hernández Luca D’Auria Nemesio M. Pérez Decoding links between magmatic processes and eruption dynamics: whole-rock time series petrology of the 2021 Tajogaite eruption, La Palma Volcanica lava, tephra, and glass time series petrological monitoring forecasting and hindcasting mush mobilisation filter pressing |
| title | Decoding links between magmatic processes and eruption dynamics: whole-rock time series petrology of the 2021 Tajogaite eruption, La Palma |
| title_full | Decoding links between magmatic processes and eruption dynamics: whole-rock time series petrology of the 2021 Tajogaite eruption, La Palma |
| title_fullStr | Decoding links between magmatic processes and eruption dynamics: whole-rock time series petrology of the 2021 Tajogaite eruption, La Palma |
| title_full_unstemmed | Decoding links between magmatic processes and eruption dynamics: whole-rock time series petrology of the 2021 Tajogaite eruption, La Palma |
| title_short | Decoding links between magmatic processes and eruption dynamics: whole-rock time series petrology of the 2021 Tajogaite eruption, La Palma |
| title_sort | decoding links between magmatic processes and eruption dynamics whole rock time series petrology of the 2021 tajogaite eruption la palma |
| topic | lava, tephra, and glass time series petrological monitoring forecasting and hindcasting mush mobilisation filter pressing |
| url | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/326 |
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