U-Pb Age and Hf Isotope Systematics of Zircon from Eclogite Xenoliths in Devonian Kimberlites: Preliminary Data on the Archaean Roots in the Junction Zone between the Sarmatian and Fennoscandian Segments of the East European Platform

The results of a laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb dating and a Hf isotope study of zircon crystals separated from small eclogite xenoliths found in Devonian kimberlites within the Prypyat horst, Ukraine, have been reported. The studied area is located in t...

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Published in:Geosciences
Main Authors: Leonid Shumlyanskyy, Stepan Tsymbal, Monika A. Kusiak, Simon A. Wilde, Alexander A. Nemchin, Iryna Tarasko, Liudmyla Shumlianska, Mandy Hofmann
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2021
Subjects:
Online Access:https://doi.org/10.3390/geosciences11120487
https://doaj.org/article/3b25c7a5e3d343f79cfa2c95b3bd38fc
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spelling ftdoajarticles:oai:doaj.org/article:3b25c7a5e3d343f79cfa2c95b3bd38fc 2023-05-15T16:12:06+02:00 U-Pb Age and Hf Isotope Systematics of Zircon from Eclogite Xenoliths in Devonian Kimberlites: Preliminary Data on the Archaean Roots in the Junction Zone between the Sarmatian and Fennoscandian Segments of the East European Platform Leonid Shumlyanskyy Stepan Tsymbal Monika A. Kusiak Simon A. Wilde Alexander A. Nemchin Iryna Tarasko Liudmyla Shumlianska Mandy Hofmann 2021-11-01T00:00:00Z https://doi.org/10.3390/geosciences11120487 https://doaj.org/article/3b25c7a5e3d343f79cfa2c95b3bd38fc EN eng MDPI AG https://www.mdpi.com/2076-3263/11/12/487 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences11120487 2076-3263 https://doaj.org/article/3b25c7a5e3d343f79cfa2c95b3bd38fc Geosciences, Vol 11, Iss 487, p 487 (2021) eclogite xenolith kimberlite zircon U–Pb age Hf isotopes Ukrainian Shield Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.3390/geosciences11120487 2022-12-31T15:17:52Z The results of a laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb dating and a Hf isotope study of zircon crystals separated from small eclogite xenoliths found in Devonian kimberlites within the Prypyat horst, Ukraine, have been reported. The studied area is located in the junction zone between the Sarmatian and Fennoscandian segments of the East European Platform. Four laser ablation sites on two zircon grains yielded Paleoproterozoic U–Pb ages between 1954 ± 24 and 1735 ± 54 Ma. In contrast, three of four Hf sites revealed negative εHf values and Paleoarchean to Mesoarchean model ages, excluding the possibility that the eclogite xenoliths represented segments of a juvenile Paleoproterozoic subducted slab or younger mafic melts crystallized in the subcontinental lithospheric mantle. A single laser ablation Hf spot yielded a positive εHf value (+3) and a Paleoproterozoic model age. Two models for eclogite origin can be proposed. The first foresees the extension of the Archean lower-crustal or lithospheric roots beneath the Sarmatia–Fennoscandia junction zone for over 200 km from the nearest known outcrop of Archean rocks in the Ukrainian Shield. The second model is that the Central Belarus Suture Zone represents a rifted-out fragment of the Kola–Karelian craton that was accreted to Sarmatia before the actual collision of these two segments of Baltica. Article in Journal/Newspaper Fennoscandia Fennoscandian karelian Directory of Open Access Journals: DOAJ Articles Geosciences 11 12 487
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic eclogite xenolith
kimberlite
zircon
U–Pb age
Hf isotopes
Ukrainian Shield
Geology
QE1-996.5
spellingShingle eclogite xenolith
kimberlite
zircon
U–Pb age
Hf isotopes
Ukrainian Shield
Geology
QE1-996.5
Leonid Shumlyanskyy
Stepan Tsymbal
Monika A. Kusiak
Simon A. Wilde
Alexander A. Nemchin
Iryna Tarasko
Liudmyla Shumlianska
Mandy Hofmann
U-Pb Age and Hf Isotope Systematics of Zircon from Eclogite Xenoliths in Devonian Kimberlites: Preliminary Data on the Archaean Roots in the Junction Zone between the Sarmatian and Fennoscandian Segments of the East European Platform
topic_facet eclogite xenolith
kimberlite
zircon
U–Pb age
Hf isotopes
Ukrainian Shield
Geology
QE1-996.5
description The results of a laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb dating and a Hf isotope study of zircon crystals separated from small eclogite xenoliths found in Devonian kimberlites within the Prypyat horst, Ukraine, have been reported. The studied area is located in the junction zone between the Sarmatian and Fennoscandian segments of the East European Platform. Four laser ablation sites on two zircon grains yielded Paleoproterozoic U–Pb ages between 1954 ± 24 and 1735 ± 54 Ma. In contrast, three of four Hf sites revealed negative εHf values and Paleoarchean to Mesoarchean model ages, excluding the possibility that the eclogite xenoliths represented segments of a juvenile Paleoproterozoic subducted slab or younger mafic melts crystallized in the subcontinental lithospheric mantle. A single laser ablation Hf spot yielded a positive εHf value (+3) and a Paleoproterozoic model age. Two models for eclogite origin can be proposed. The first foresees the extension of the Archean lower-crustal or lithospheric roots beneath the Sarmatia–Fennoscandia junction zone for over 200 km from the nearest known outcrop of Archean rocks in the Ukrainian Shield. The second model is that the Central Belarus Suture Zone represents a rifted-out fragment of the Kola–Karelian craton that was accreted to Sarmatia before the actual collision of these two segments of Baltica.
format Article in Journal/Newspaper
author Leonid Shumlyanskyy
Stepan Tsymbal
Monika A. Kusiak
Simon A. Wilde
Alexander A. Nemchin
Iryna Tarasko
Liudmyla Shumlianska
Mandy Hofmann
author_facet Leonid Shumlyanskyy
Stepan Tsymbal
Monika A. Kusiak
Simon A. Wilde
Alexander A. Nemchin
Iryna Tarasko
Liudmyla Shumlianska
Mandy Hofmann
author_sort Leonid Shumlyanskyy
title U-Pb Age and Hf Isotope Systematics of Zircon from Eclogite Xenoliths in Devonian Kimberlites: Preliminary Data on the Archaean Roots in the Junction Zone between the Sarmatian and Fennoscandian Segments of the East European Platform
title_short U-Pb Age and Hf Isotope Systematics of Zircon from Eclogite Xenoliths in Devonian Kimberlites: Preliminary Data on the Archaean Roots in the Junction Zone between the Sarmatian and Fennoscandian Segments of the East European Platform
title_full U-Pb Age and Hf Isotope Systematics of Zircon from Eclogite Xenoliths in Devonian Kimberlites: Preliminary Data on the Archaean Roots in the Junction Zone between the Sarmatian and Fennoscandian Segments of the East European Platform
title_fullStr U-Pb Age and Hf Isotope Systematics of Zircon from Eclogite Xenoliths in Devonian Kimberlites: Preliminary Data on the Archaean Roots in the Junction Zone between the Sarmatian and Fennoscandian Segments of the East European Platform
title_full_unstemmed U-Pb Age and Hf Isotope Systematics of Zircon from Eclogite Xenoliths in Devonian Kimberlites: Preliminary Data on the Archaean Roots in the Junction Zone between the Sarmatian and Fennoscandian Segments of the East European Platform
title_sort u-pb age and hf isotope systematics of zircon from eclogite xenoliths in devonian kimberlites: preliminary data on the archaean roots in the junction zone between the sarmatian and fennoscandian segments of the east european platform
publisher MDPI AG
publishDate 2021
url https://doi.org/10.3390/geosciences11120487
https://doaj.org/article/3b25c7a5e3d343f79cfa2c95b3bd38fc
genre Fennoscandia
Fennoscandian
karelian
genre_facet Fennoscandia
Fennoscandian
karelian
op_source Geosciences, Vol 11, Iss 487, p 487 (2021)
op_relation https://www.mdpi.com/2076-3263/11/12/487
https://doaj.org/toc/2076-3263
doi:10.3390/geosciences11120487
2076-3263
https://doaj.org/article/3b25c7a5e3d343f79cfa2c95b3bd38fc
op_doi https://doi.org/10.3390/geosciences11120487
container_title Geosciences
container_volume 11
container_issue 12
container_start_page 487
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