On the origin and evolution of the 1.86–1.76 Ga Mid-Baltic Belt in the western East European Craton
A Mid-Lithuanian Domain (MLD) was distinguished by Bogdanova et al. (2015) as part of the large Mid-Baltic Belt (MBB) in the western East European Craton. Zircon U-Pb dating by SIMS, Sr- and Nd-isotope systematics and a detailed geochemical study have allowed to subdivide the MLD into two parts: NW...
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ftlitinstagrecon:oai:elaba:111489691 2023-05-15T16:11:46+02:00 On the origin and evolution of the 1.86–1.76 Ga Mid-Baltic Belt in the western East European Craton Skridlaitė, Gražina Šiliauskas, Laurynas Whitehouse, Martin J. Johansson, Åke Rimša, Andrius 2021 http://gtc.lvb.lt/GTC:ELABAPDB111489691&prefLang=en_US eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.precamres.2021.106403 http://gtc.lvb.lt/GTC:ELABAPDB111489691&prefLang=en_US Precambrian research, Amsterdam : Elsevier B.V., 2021, vol. 367, art. no. 106403, p. 1-21 ISSN 0301-9268 East European Craton U-Pb geochronology Sr and Nd isotopes Geochemistry Proterozoic reconstructions Fennoscandia info:eu-repo/semantics/article 2021 ftlitinstagrecon https://doi.org/10.1016/j.precamres.2021.106403 2021-12-02T01:36:53Z A Mid-Lithuanian Domain (MLD) was distinguished by Bogdanova et al. (2015) as part of the large Mid-Baltic Belt (MBB) in the western East European Craton. Zircon U-Pb dating by SIMS, Sr- and Nd-isotope systematics and a detailed geochemical study have allowed to subdivide the MLD into two parts: NW and SE. The NW magmatic rocks have been emplaced at 1.86 to 1.83 Ga from either an enriched mantle source or from a mantle magma with presence of older crustal material. The SE MLD magmatic rocks originated from a slightly depleted mantle source at 1.87 to 1.82 Ga. At 1.79 Ga, they were intruded by gabbronorites which at 1.76 Ga were crosscut by thin veinlets of microgabbronorite. The SE MLD magmatic series with their oceanic island arc affinity correlate well with the contemporaneous Fröderyd metavolcanics of the Vetlanda-Oskarshamn belt in Sweden, while the NW MLD rocks are similar to the TIB-0 Askersund granitoids in the southern Bergslagen area. The younger (1.81–1.79 Ga) intrusives in both areas are time-equivalents of the TIB-1 magmatism on the Swedish side. Thus, the MLD as well as its counterparts on the Swedish side of the Baltic Sea may belong to the same Mid-Baltic Belt, representing an active, south-facing continental margin established at ca. 1.86 Ga. The shape and outline of the belt was affected by the Fennoscandia-Sarmatia collision at ca. 1.82–1.80 Ga, as well as by later magmatism. Article in Journal/Newspaper Fennoscandia LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library) Bogdanova ENVELOPE(153.500,153.500,67.400,67.400) Precambrian Research 367 106403 |
institution |
Open Polar |
collection |
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library) |
op_collection_id |
ftlitinstagrecon |
language |
English |
topic |
East European Craton U-Pb geochronology Sr and Nd isotopes Geochemistry Proterozoic reconstructions Fennoscandia |
spellingShingle |
East European Craton U-Pb geochronology Sr and Nd isotopes Geochemistry Proterozoic reconstructions Fennoscandia Skridlaitė, Gražina Šiliauskas, Laurynas Whitehouse, Martin J. Johansson, Åke Rimša, Andrius On the origin and evolution of the 1.86–1.76 Ga Mid-Baltic Belt in the western East European Craton |
topic_facet |
East European Craton U-Pb geochronology Sr and Nd isotopes Geochemistry Proterozoic reconstructions Fennoscandia |
description |
A Mid-Lithuanian Domain (MLD) was distinguished by Bogdanova et al. (2015) as part of the large Mid-Baltic Belt (MBB) in the western East European Craton. Zircon U-Pb dating by SIMS, Sr- and Nd-isotope systematics and a detailed geochemical study have allowed to subdivide the MLD into two parts: NW and SE. The NW magmatic rocks have been emplaced at 1.86 to 1.83 Ga from either an enriched mantle source or from a mantle magma with presence of older crustal material. The SE MLD magmatic rocks originated from a slightly depleted mantle source at 1.87 to 1.82 Ga. At 1.79 Ga, they were intruded by gabbronorites which at 1.76 Ga were crosscut by thin veinlets of microgabbronorite. The SE MLD magmatic series with their oceanic island arc affinity correlate well with the contemporaneous Fröderyd metavolcanics of the Vetlanda-Oskarshamn belt in Sweden, while the NW MLD rocks are similar to the TIB-0 Askersund granitoids in the southern Bergslagen area. The younger (1.81–1.79 Ga) intrusives in both areas are time-equivalents of the TIB-1 magmatism on the Swedish side. Thus, the MLD as well as its counterparts on the Swedish side of the Baltic Sea may belong to the same Mid-Baltic Belt, representing an active, south-facing continental margin established at ca. 1.86 Ga. The shape and outline of the belt was affected by the Fennoscandia-Sarmatia collision at ca. 1.82–1.80 Ga, as well as by later magmatism. |
format |
Article in Journal/Newspaper |
author |
Skridlaitė, Gražina Šiliauskas, Laurynas Whitehouse, Martin J. Johansson, Åke Rimša, Andrius |
author_facet |
Skridlaitė, Gražina Šiliauskas, Laurynas Whitehouse, Martin J. Johansson, Åke Rimša, Andrius |
author_sort |
Skridlaitė, Gražina |
title |
On the origin and evolution of the 1.86–1.76 Ga Mid-Baltic Belt in the western East European Craton |
title_short |
On the origin and evolution of the 1.86–1.76 Ga Mid-Baltic Belt in the western East European Craton |
title_full |
On the origin and evolution of the 1.86–1.76 Ga Mid-Baltic Belt in the western East European Craton |
title_fullStr |
On the origin and evolution of the 1.86–1.76 Ga Mid-Baltic Belt in the western East European Craton |
title_full_unstemmed |
On the origin and evolution of the 1.86–1.76 Ga Mid-Baltic Belt in the western East European Craton |
title_sort |
on the origin and evolution of the 1.86–1.76 ga mid-baltic belt in the western east european craton |
publishDate |
2021 |
url |
http://gtc.lvb.lt/GTC:ELABAPDB111489691&prefLang=en_US |
long_lat |
ENVELOPE(153.500,153.500,67.400,67.400) |
geographic |
Bogdanova |
geographic_facet |
Bogdanova |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Precambrian research, Amsterdam : Elsevier B.V., 2021, vol. 367, art. no. 106403, p. 1-21 ISSN 0301-9268 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.precamres.2021.106403 http://gtc.lvb.lt/GTC:ELABAPDB111489691&prefLang=en_US |
op_doi |
https://doi.org/10.1016/j.precamres.2021.106403 |
container_title |
Precambrian Research |
container_volume |
367 |
container_start_page |
106403 |
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1765996941564444672 |