Cargando…

Fractional crystallisation of eclogite during the birth of a Hawaiian Volcano

The initial melts erupted by a Hawaiian volcano have a range of alkalic compositions but are rarely observed as they are covered by enormous volumes of shield stage tholeiites. A remarkable record of the early evolution of Hawaiian volcanoes, however, is preserved by a volcanic sandstone dredged fro...

Descripción completa

Detalles Bibliográficos
Autores principales: Miller, Laura A., O’Neill, Hugh St. C., Berry, Andrew J., Le Losq, Charles
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9135719/
https://www.ncbi.nlm.nih.gov/pubmed/35618712
http://dx.doi.org/10.1038/s41467-022-30108-x
_version_ 1784714025384280064
author Miller, Laura A.
O’Neill, Hugh St. C.
Berry, Andrew J.
Le Losq, Charles
author_facet Miller, Laura A.
O’Neill, Hugh St. C.
Berry, Andrew J.
Le Losq, Charles
author_sort Miller, Laura A.
collection PubMed
description The initial melts erupted by a Hawaiian volcano have a range of alkalic compositions but are rarely observed as they are covered by enormous volumes of shield stage tholeiites. A remarkable record of the early evolution of Hawaiian volcanoes, however, is preserved by a volcanic sandstone dredged from the submarine flank of Kilauea, which contains a suite of petrogenetically related pre-shield basanite to nephelinite glasses. Here we show that the systematic variation in the rare earth element (REE) patterns of these samples requires the fractional crystallisation of garnet. A fractionating assemblage of Ca-rich garnet (32%), omphacitic clinopyroxene (63%), and minor phlogopite can explain the variation in the major and trace element contents of the suite. The results suggest fractional crystallisation of eclogite from a primitive Hawaiian melt near the base of the lithosphere (>90 km) and that a deep magma chamber is the first stage in the development of a Hawaiian volcano.
format Online
Article
Text
id pubmed-9135719
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-91357192022-05-28 Fractional crystallisation of eclogite during the birth of a Hawaiian Volcano Miller, Laura A. O’Neill, Hugh St. C. Berry, Andrew J. Le Losq, Charles Nat Commun Article The initial melts erupted by a Hawaiian volcano have a range of alkalic compositions but are rarely observed as they are covered by enormous volumes of shield stage tholeiites. A remarkable record of the early evolution of Hawaiian volcanoes, however, is preserved by a volcanic sandstone dredged from the submarine flank of Kilauea, which contains a suite of petrogenetically related pre-shield basanite to nephelinite glasses. Here we show that the systematic variation in the rare earth element (REE) patterns of these samples requires the fractional crystallisation of garnet. A fractionating assemblage of Ca-rich garnet (32%), omphacitic clinopyroxene (63%), and minor phlogopite can explain the variation in the major and trace element contents of the suite. The results suggest fractional crystallisation of eclogite from a primitive Hawaiian melt near the base of the lithosphere (>90 km) and that a deep magma chamber is the first stage in the development of a Hawaiian volcano. Nature Publishing Group UK 2022-05-26 /pmc/articles/PMC9135719/ /pubmed/35618712 http://dx.doi.org/10.1038/s41467-022-30108-x Text en © The Author(s) 2022, corrected publication 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Miller, Laura A.
O’Neill, Hugh St. C.
Berry, Andrew J.
Le Losq, Charles
Fractional crystallisation of eclogite during the birth of a Hawaiian Volcano
title Fractional crystallisation of eclogite during the birth of a Hawaiian Volcano
title_full Fractional crystallisation of eclogite during the birth of a Hawaiian Volcano
title_fullStr Fractional crystallisation of eclogite during the birth of a Hawaiian Volcano
title_full_unstemmed Fractional crystallisation of eclogite during the birth of a Hawaiian Volcano
title_short Fractional crystallisation of eclogite during the birth of a Hawaiian Volcano
title_sort fractional crystallisation of eclogite during the birth of a hawaiian volcano
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9135719/
https://www.ncbi.nlm.nih.gov/pubmed/35618712
http://dx.doi.org/10.1038/s41467-022-30108-x
work_keys_str_mv AT millerlauraa fractionalcrystallisationofeclogiteduringthebirthofahawaiianvolcano
AT oneillhughstc fractionalcrystallisationofeclogiteduringthebirthofahawaiianvolcano
AT berryandrewj fractionalcrystallisationofeclogiteduringthebirthofahawaiianvolcano
AT lelosqcharles fractionalcrystallisationofeclogiteduringthebirthofahawaiianvolcano