A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland)
Publisher's version (útgefin grein) The Holuhraun–Bárdarbunga (Iceland) eruption lasted approximately 6 months. Magma propagated laterally through a 40 km long dyke, while Bárdarbunga caldera was collapsing. This event was intensely monitored, providing an opportunity to investigate the relatio...
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Online Access: | https://hdl.handle.net/20.500.11815/2440 https://doi.org/10.3389/feart.2020.00018 |
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ftopinvisindi:oai:opinvisindi.is:20.500.11815/2440 2023-05-15T16:49:04+02:00 A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland) Caricchi, Luca Petrelli, Maurizio Bali, Eniko Sheldrake, Tom Pioli, Laura Simpson, Guy Jarðvísindastofnun (HÍ) Institute of Earth Sciences (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland 2020-02-07 18 https://hdl.handle.net/20.500.11815/2440 https://doi.org/10.3389/feart.2020.00018 en eng Frontiers Media SA info:eu-repo/grantAgreement/EC/H2020/677493 Frontiers in Earth Science;8 https://www.frontiersin.org/article/10.3389/feart.2020.00018/full Caricchi L, Petrelli M, Bali E, Sheldrake T, Pioli L and Simpson G (2020) A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland). Frontiers in Earth Science 8:18. doi:10.3389/feart.2020.00018 2296-6463 https://hdl.handle.net/20.500.11815/2440 Frontiers in Earth Science doi:10.3389/feart.2020.00018 info:eu-repo/semantics/openAccess Eruption Magma Magmatic processes Mineral chemistry Petrology Eldgos Hraun Bergkvika Bergfræði info:eu-repo/semantics/article 2020 ftopinvisindi https://doi.org/20.500.11815/2440 https://doi.org/10.3389/feart.2020.00018 2022-11-18T06:52:06Z Publisher's version (útgefin grein) The Holuhraun–Bárdarbunga (Iceland) eruption lasted approximately 6 months. Magma propagated laterally through a 40 km long dyke, while Bárdarbunga caldera was collapsing. This event was intensely monitored, providing an opportunity to investigate the relationships between eruption dynamics and erupted products. Whole rock and melt inclusion data do not show chemical variations of magma during the eruption. Nevertheless, zoning patterns in clinopyroxene suggest temporal variations of intensive parameters during crystallization. We investigated the chemical zoning of clinopyroxene using a data driven approach, on major and trace elements analyses from lava flow lobes emplaced during the eruption. We applied hierarchical clustering (HC) to identify compositional groups based on major and trace element chemistry. This analysis identifies five compositional groups, which can be associated with specific petrographic features. One cluster represents the chemistry of hourglass sectors, two constitute the oscillatory zoned mantle of the crystals, one cluster corresponds to a seldom present bright rim (in back scattered electron images) in the outer portions of the crystals, and a last one represents most of the outer rims. HC applied to trace elements also identifies five compositional clusters, which highlight progressively more evolved clinopyroxene compositions from the core to the rim of the crystals. Two of the clusters identified with trace elements corresponds to major element clusters. All together the data suggest that the chemical zoning in the inner portions of the clinopyroxene crystals was generated by crystallization in the magma reservoir and interaction between hot magma propagating through the dyke and unerupted magma cooling within the dyke. The fraction of zones produced by interaction with colder portion of the magma residing within the dyke dropped during the eruption, potentially signaling the thermal maturation of the dyke. Some of the analyses reveal that ... Article in Journal/Newspaper Iceland Opin vísindi (Iceland) Holuhraun ENVELOPE(-16.831,-16.831,64.852,64.852) Hraun ENVELOPE(-19.263,-19.263,63.507,63.507) Frontiers in Earth Science 8 |
institution |
Open Polar |
collection |
Opin vísindi (Iceland) |
op_collection_id |
ftopinvisindi |
language |
English |
topic |
Eruption Magma Magmatic processes Mineral chemistry Petrology Eldgos Hraun Bergkvika Bergfræði |
spellingShingle |
Eruption Magma Magmatic processes Mineral chemistry Petrology Eldgos Hraun Bergkvika Bergfræði Caricchi, Luca Petrelli, Maurizio Bali, Eniko Sheldrake, Tom Pioli, Laura Simpson, Guy A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland) |
topic_facet |
Eruption Magma Magmatic processes Mineral chemistry Petrology Eldgos Hraun Bergkvika Bergfræði |
description |
Publisher's version (útgefin grein) The Holuhraun–Bárdarbunga (Iceland) eruption lasted approximately 6 months. Magma propagated laterally through a 40 km long dyke, while Bárdarbunga caldera was collapsing. This event was intensely monitored, providing an opportunity to investigate the relationships between eruption dynamics and erupted products. Whole rock and melt inclusion data do not show chemical variations of magma during the eruption. Nevertheless, zoning patterns in clinopyroxene suggest temporal variations of intensive parameters during crystallization. We investigated the chemical zoning of clinopyroxene using a data driven approach, on major and trace elements analyses from lava flow lobes emplaced during the eruption. We applied hierarchical clustering (HC) to identify compositional groups based on major and trace element chemistry. This analysis identifies five compositional groups, which can be associated with specific petrographic features. One cluster represents the chemistry of hourglass sectors, two constitute the oscillatory zoned mantle of the crystals, one cluster corresponds to a seldom present bright rim (in back scattered electron images) in the outer portions of the crystals, and a last one represents most of the outer rims. HC applied to trace elements also identifies five compositional clusters, which highlight progressively more evolved clinopyroxene compositions from the core to the rim of the crystals. Two of the clusters identified with trace elements corresponds to major element clusters. All together the data suggest that the chemical zoning in the inner portions of the clinopyroxene crystals was generated by crystallization in the magma reservoir and interaction between hot magma propagating through the dyke and unerupted magma cooling within the dyke. The fraction of zones produced by interaction with colder portion of the magma residing within the dyke dropped during the eruption, potentially signaling the thermal maturation of the dyke. Some of the analyses reveal that ... |
author2 |
Jarðvísindastofnun (HÍ) Institute of Earth Sciences (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland |
format |
Article in Journal/Newspaper |
author |
Caricchi, Luca Petrelli, Maurizio Bali, Eniko Sheldrake, Tom Pioli, Laura Simpson, Guy |
author_facet |
Caricchi, Luca Petrelli, Maurizio Bali, Eniko Sheldrake, Tom Pioli, Laura Simpson, Guy |
author_sort |
Caricchi, Luca |
title |
A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland) |
title_short |
A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland) |
title_full |
A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland) |
title_fullStr |
A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland) |
title_full_unstemmed |
A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland) |
title_sort |
data driven approach to investigate the chemical variability of clinopyroxenes from the 2014–2015 holuhraun–bárdarbunga eruption (iceland) |
publisher |
Frontiers Media SA |
publishDate |
2020 |
url |
https://hdl.handle.net/20.500.11815/2440 https://doi.org/10.3389/feart.2020.00018 |
long_lat |
ENVELOPE(-16.831,-16.831,64.852,64.852) ENVELOPE(-19.263,-19.263,63.507,63.507) |
geographic |
Holuhraun Hraun |
geographic_facet |
Holuhraun Hraun |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
info:eu-repo/grantAgreement/EC/H2020/677493 Frontiers in Earth Science;8 https://www.frontiersin.org/article/10.3389/feart.2020.00018/full Caricchi L, Petrelli M, Bali E, Sheldrake T, Pioli L and Simpson G (2020) A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland). Frontiers in Earth Science 8:18. doi:10.3389/feart.2020.00018 2296-6463 https://hdl.handle.net/20.500.11815/2440 Frontiers in Earth Science doi:10.3389/feart.2020.00018 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11815/2440 https://doi.org/10.3389/feart.2020.00018 |
container_title |
Frontiers in Earth Science |
container_volume |
8 |
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1766039132986933248 |