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Geodynamic significance of the Mesoproterozoic magmatism of the Udzha Paleo-Rift (Northern Siberian Craton) based on U-Pb geochronology and paleomagnetic data
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Abstract
The emplacement age of the Great Udzha Dyke (northern Siberian Craton) was determined by the U-Pb dating of apatite using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). This produced an age of 1386 ± 30 Ma. This dyke along with two other adjacent intrusions, which cross-cut the sedimentary units of the Udzha paleo-rift, were subjected to paleomagnetic investigation. The paleomagnetic poles for the Udzha paleo-rift intrusions are consistent with previous results published for the Chieress dyke in the Anabar shield of the Siberian Craton (1384 ± 2 Ma). Our results suggest that there was a period of intense volcanism in the northern Siberian Craton, as well as allow us to reconstruct the apparent migration of the Siberian Craton during the Mesoproterozoic.
Item Type: | Article |
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Authors/Creators: | Malyshev, SV and Pasenko, AM and Ivanov, AV and Gladkochub, DP and Savatenkov, VM and Meffre, S and Abersteiner, AB and Kamenetsky, VS and Shcherbakov, VD |
Keywords: | U-Pb geochronology, apatite, basalts, Proterozoic, Siberia, paleomagnetism, paleoreconstruction |
Journal or Publication Title: | Minerals |
Publisher: | MDPIAG |
ISSN: | 2075-163X |
DOI / ID Number: | 10.3390/min8120555 |
Copyright Information: | Copyright 2018 by the Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ |
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