Relicts of Paleoproterozoic LIPs in the Belomorian Province, eastern Fennoscandian Shield: barcode reconstruction for a deeply eroded collisional orogen-Reference-Cited by-同舟云学术

Relicts of Paleoproterozoic LIPs in the Belomorian Province, eastern Fennoscandian Shield: barcode reconstruction for a deeply eroded collisional orogen

Published:2021-07-02 Issue: Volume: Page:SP518-2021-30
ISSN:0305-8719
Container-title:Geological Society, London, Special Publications
language:en
Short-container-title:Geological Society, London, Special Publications

Author:

Stepanova Alexandra V.¹^ORCID,Stepanov Vladimir S.¹,Larionov Alexander N.²,Salnikova Ekaterina B.³,Samsonov Alexander V.⁴^ORCID,Azimov Pavel³^ORCID,Egorova Svetlana V.¹,Babarina Irina I.⁴,Larionova Yulia O.⁴^ORCID,Sukhanova Maria A.³^ORCID,Kervinen Anna V.¹,Maksimov Oleg A.¹^ORCID

Affiliation:

1. Institute of Geology, Karelian Research Centre, RAS, Petrozavodsk, 185910, Russia

2. Centre of Isotopic Research, A. P. Karpinsky Russian Geological Research Institute, St Petersburg, 199106, Russia

3. Institute of Precambrian Geology and Geochronology, St Petersburg, 199034, Russia

4. Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, RAS, Moscow, 109017, Russia

Abstract

AbstractGeological, geochemical, isotopic and geochronological data for Paleoproterozoic mafic intrusions and dykes indicate that distinct magmatic events dated at c. 2.50, 2.45, 2.40, 2.30, 2.23 and 2.12 Ga can be distinguished in the Belomorian Province, Eastern Fennoscandian Shield. The similarity of Paleoproterozoic magmatic barcodes for the Belomorian Province and the Karelian Craton in the c. 2.5–2.1 Ga interval suggests a neighbouring position of these crustal segments in an Archean continent. Intensive tectonic and metamorphic reworking of mafic intrusions and dykes in the Belomorian Province during the c. 2.0–1.8 Ga Lapland–Kola Orogeny produced differences in mineral assemblages and tectonic position in comparison with the Karelian Craton.

Publisher

Geological Society of London

Subject

Geology,Ocean Engineering,Water Science and Technology

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