Cargando…

Insights for crystal mush storage utilizing mafic enclaves from the 2011–12 Cordón Caulle eruption

Two distinct types of rare crystal-rich mafic enclaves have been identified in the rhyolite lava flow from the 2011–12 Cordón Caulle eruption (Southern Andean Volcanic Zone, SVZ). The majority of mafic enclaves are coarsely crystalline with interlocking olivine-clinopyroxene-plagioclase textures and...

Descripción completa

Detalles Bibliográficos
Autores principales: Winslow, Heather, Ruprecht, Philipp, Gonnermann, Helge M., Phelps, Patrick R., Muñoz-Saez, Carolina, Delgado, Francisco, Pritchard, Matthew, Amigo, Alvaro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9192606/
https://www.ncbi.nlm.nih.gov/pubmed/35697772
http://dx.doi.org/10.1038/s41598-022-13305-y
_version_ 1784726278348210176
author Winslow, Heather
Ruprecht, Philipp
Gonnermann, Helge M.
Phelps, Patrick R.
Muñoz-Saez, Carolina
Delgado, Francisco
Pritchard, Matthew
Amigo, Alvaro
author_facet Winslow, Heather
Ruprecht, Philipp
Gonnermann, Helge M.
Phelps, Patrick R.
Muñoz-Saez, Carolina
Delgado, Francisco
Pritchard, Matthew
Amigo, Alvaro
author_sort Winslow, Heather
collection PubMed
description Two distinct types of rare crystal-rich mafic enclaves have been identified in the rhyolite lava flow from the 2011–12 Cordón Caulle eruption (Southern Andean Volcanic Zone, SVZ). The majority of mafic enclaves are coarsely crystalline with interlocking olivine-clinopyroxene-plagioclase textures and irregular shaped vesicles filling the crystal framework. These enclaves are interpreted as pieces of crystal-rich magma mush underlying a crystal-poor rhyolitic magma body that has fed recent silicic eruptions at Cordón Caulle. A second type of porphyritic enclaves, with restricted mineral chemistry and spherical vesicles, represents small-volume injections into the rhyolite magma. Both types of enclaves are basaltic end-members (up to 9.3 wt% MgO and 50–53 wt% SiO(2)) in comparison to enclaves erupted globally. The Cordón Caulle enclaves also have one of the largest compositional gaps on record between the basaltic enclaves and the rhyolite host at 17 wt% SiO(2). Interstitial melt in the coarsely-crystalline enclaves is compositionally identical to their rhyolitic host, suggesting that the crystal-poor rhyolite magma was derived directly from the underlying basaltic magma mush through efficient melt extraction. We suggest the 2011–12 rhyolitic eruption was generated from a primitive basaltic crystal-rich mush that short-circuited the typical full range of magmatic differentiation in a single step.
format Online
Article
Text
id pubmed-9192606
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-91926062022-06-15 Insights for crystal mush storage utilizing mafic enclaves from the 2011–12 Cordón Caulle eruption Winslow, Heather Ruprecht, Philipp Gonnermann, Helge M. Phelps, Patrick R. Muñoz-Saez, Carolina Delgado, Francisco Pritchard, Matthew Amigo, Alvaro Sci Rep Article Two distinct types of rare crystal-rich mafic enclaves have been identified in the rhyolite lava flow from the 2011–12 Cordón Caulle eruption (Southern Andean Volcanic Zone, SVZ). The majority of mafic enclaves are coarsely crystalline with interlocking olivine-clinopyroxene-plagioclase textures and irregular shaped vesicles filling the crystal framework. These enclaves are interpreted as pieces of crystal-rich magma mush underlying a crystal-poor rhyolitic magma body that has fed recent silicic eruptions at Cordón Caulle. A second type of porphyritic enclaves, with restricted mineral chemistry and spherical vesicles, represents small-volume injections into the rhyolite magma. Both types of enclaves are basaltic end-members (up to 9.3 wt% MgO and 50–53 wt% SiO(2)) in comparison to enclaves erupted globally. The Cordón Caulle enclaves also have one of the largest compositional gaps on record between the basaltic enclaves and the rhyolite host at 17 wt% SiO(2). Interstitial melt in the coarsely-crystalline enclaves is compositionally identical to their rhyolitic host, suggesting that the crystal-poor rhyolite magma was derived directly from the underlying basaltic magma mush through efficient melt extraction. We suggest the 2011–12 rhyolitic eruption was generated from a primitive basaltic crystal-rich mush that short-circuited the typical full range of magmatic differentiation in a single step. Nature Publishing Group UK 2022-06-13 /pmc/articles/PMC9192606/ /pubmed/35697772 http://dx.doi.org/10.1038/s41598-022-13305-y Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Winslow, Heather
Ruprecht, Philipp
Gonnermann, Helge M.
Phelps, Patrick R.
Muñoz-Saez, Carolina
Delgado, Francisco
Pritchard, Matthew
Amigo, Alvaro
Insights for crystal mush storage utilizing mafic enclaves from the 2011–12 Cordón Caulle eruption
title Insights for crystal mush storage utilizing mafic enclaves from the 2011–12 Cordón Caulle eruption
title_full Insights for crystal mush storage utilizing mafic enclaves from the 2011–12 Cordón Caulle eruption
title_fullStr Insights for crystal mush storage utilizing mafic enclaves from the 2011–12 Cordón Caulle eruption
title_full_unstemmed Insights for crystal mush storage utilizing mafic enclaves from the 2011–12 Cordón Caulle eruption
title_short Insights for crystal mush storage utilizing mafic enclaves from the 2011–12 Cordón Caulle eruption
title_sort insights for crystal mush storage utilizing mafic enclaves from the 2011–12 cordón caulle eruption
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9192606/
https://www.ncbi.nlm.nih.gov/pubmed/35697772
http://dx.doi.org/10.1038/s41598-022-13305-y
work_keys_str_mv AT winslowheather insightsforcrystalmushstorageutilizingmaficenclavesfromthe201112cordoncaulleeruption
AT ruprechtphilipp insightsforcrystalmushstorageutilizingmaficenclavesfromthe201112cordoncaulleeruption
AT gonnermannhelgem insightsforcrystalmushstorageutilizingmaficenclavesfromthe201112cordoncaulleeruption
AT phelpspatrickr insightsforcrystalmushstorageutilizingmaficenclavesfromthe201112cordoncaulleeruption
AT munozsaezcarolina insightsforcrystalmushstorageutilizingmaficenclavesfromthe201112cordoncaulleeruption
AT delgadofrancisco insightsforcrystalmushstorageutilizingmaficenclavesfromthe201112cordoncaulleeruption
AT pritchardmatthew insightsforcrystalmushstorageutilizingmaficenclavesfromthe201112cordoncaulleeruption
AT amigoalvaro insightsforcrystalmushstorageutilizingmaficenclavesfromthe201112cordoncaulleeruption