Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source
Several orogenies have shaped the bedrock of southern Sweden. While mafic intrusions represent significant sources of information for reconstructing geodynamics and crustal evolution, the characterization of the various generations of such intrusions in Sweden remains limited. We report in situ zirc...
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Taylor & Francis
2020
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ftdatacite:10.6084/m9.figshare.13073195.v1 2023-05-15T16:12:06+02:00 Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source Petersson, Andreas Tual, Lorraine 2020 https://dx.doi.org/10.6084/m9.figshare.13073195.v1 https://tandf.figshare.com/articles/dataset/Zircon_U_Pb-Hf_isotope_data_in_eclogite_and_metagabbro_from_southern_Sweden_reveal_a_common_long-lived_evolution_and_enriched_source/13073195/1 unknown Taylor & Francis https://dx.doi.org/10.1080/11035897.2020.1822438 https://dx.doi.org/10.6084/m9.figshare.13073195 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Developmental Biology Plant Biology dataset Dataset 2020 ftdatacite https://doi.org/10.6084/m9.figshare.13073195.v1 https://doi.org/10.1080/11035897.2020.1822438 https://doi.org/10.6084/m9.figshare.13073195 2021-11-05T12:55:41Z Several orogenies have shaped the bedrock of southern Sweden. While mafic intrusions represent significant sources of information for reconstructing geodynamics and crustal evolution, the characterization of the various generations of such intrusions in Sweden remains limited. We report in situ zircon U–Pb ages and Hf isotope data from a Fe-Ti eclogite and a coronitic metagabbro from the Eastern Segment in southern Sweden. Crystallisation ages at 1683 ± 17 Ma of the eclogite suggest affiliation with the surrounding 1730–1660 Ma Transscandinavian Igneous Belt intrusions that dominate the Eastern Segment. Secondary zircon growth and Pb-loss in the eclogite sample at 1459 ± 44 Ma and the crystallisation of the metagabbro at 1431 ± 26 Ma overlap and are related to magmatic activity during the Hallandian orogeny. Zircon Hf isotope signatures with chondritic and sub-chondritic values at ~1683 Ma and ~1431 Ma, respectively, correspond to an enriched (or mildly depleted) source in line with a “Mixed Svecofennian Crustal Reservoir”. These isotope signatures are more enriched than those in the surrounding gneisses. Zircon isotope data from the herein analysed zircon grains indicate that the eclogite and metagabbro had an enriched mafic source in the mid to lower crust, or within the subcontinental lithospheric mantle below Fennoscandia. Dataset Fennoscandia DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Developmental Biology Plant Biology |
spellingShingle |
Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Developmental Biology Plant Biology Petersson, Andreas Tual, Lorraine Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source |
topic_facet |
Physiology FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences 39999 Chemical Sciences not elsewhere classified FOS Chemical sciences Sociology FOS Sociology 69999 Biological Sciences not elsewhere classified Developmental Biology Plant Biology |
description |
Several orogenies have shaped the bedrock of southern Sweden. While mafic intrusions represent significant sources of information for reconstructing geodynamics and crustal evolution, the characterization of the various generations of such intrusions in Sweden remains limited. We report in situ zircon U–Pb ages and Hf isotope data from a Fe-Ti eclogite and a coronitic metagabbro from the Eastern Segment in southern Sweden. Crystallisation ages at 1683 ± 17 Ma of the eclogite suggest affiliation with the surrounding 1730–1660 Ma Transscandinavian Igneous Belt intrusions that dominate the Eastern Segment. Secondary zircon growth and Pb-loss in the eclogite sample at 1459 ± 44 Ma and the crystallisation of the metagabbro at 1431 ± 26 Ma overlap and are related to magmatic activity during the Hallandian orogeny. Zircon Hf isotope signatures with chondritic and sub-chondritic values at ~1683 Ma and ~1431 Ma, respectively, correspond to an enriched (or mildly depleted) source in line with a “Mixed Svecofennian Crustal Reservoir”. These isotope signatures are more enriched than those in the surrounding gneisses. Zircon isotope data from the herein analysed zircon grains indicate that the eclogite and metagabbro had an enriched mafic source in the mid to lower crust, or within the subcontinental lithospheric mantle below Fennoscandia. |
format |
Dataset |
author |
Petersson, Andreas Tual, Lorraine |
author_facet |
Petersson, Andreas Tual, Lorraine |
author_sort |
Petersson, Andreas |
title |
Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source |
title_short |
Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source |
title_full |
Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source |
title_fullStr |
Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source |
title_full_unstemmed |
Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source |
title_sort |
zircon u–pb-hf isotope data in eclogite and metagabbro from southern sweden reveal a common long-lived evolution and enriched source |
publisher |
Taylor & Francis |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.13073195.v1 https://tandf.figshare.com/articles/dataset/Zircon_U_Pb-Hf_isotope_data_in_eclogite_and_metagabbro_from_southern_Sweden_reveal_a_common_long-lived_evolution_and_enriched_source/13073195/1 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_relation |
https://dx.doi.org/10.1080/11035897.2020.1822438 https://dx.doi.org/10.6084/m9.figshare.13073195 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.13073195.v1 https://doi.org/10.1080/11035897.2020.1822438 https://doi.org/10.6084/m9.figshare.13073195 |
_version_ |
1765997341093920768 |