The 2405 Ma doleritic dykes in the Karelian Craton: A fragment of a Paleoproterozoic large igneous province
- Авторы: Stepanova A.V.1, Salnikova E.B.2, Samsonov A.V.3, Larionova Y.O.3, Egorova S.V.1, Savatenkov V.M.2
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Учреждения:
- Institute of Geology, Karelian Science Center
- Institute of Precambrian Geology and Geochronology
- Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
- Выпуск: Том 472, № 1 (2017)
- Страницы: 72-77
- Раздел: Geochemistry
- URL: https://bakhtiniada.ru/1028-334X/article/view/189397
- DOI: https://doi.org/10.1134/S1028334X17010196
- ID: 189397
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Аннотация
New data on the age and composition of doleritic dykes of the Karelian Craton on the Fennoscandian Shield are reported. Based on the results of U–Pb dating of baddeleyite, a new age episode (2404 ± 5 Ma) in the formation of basic rocks on the Karelian Craton is established. Comparison of the composition of the studied dolerite with that of dykes of the same age from other Archean cratons worldwide shows their essential similarity and allows us to suggest their formation within a single large igneous province. The data obtained support the current models of supercontinental reconstructions for the period of 2400 Ma.
Об авторах
A. Stepanova
Institute of Geology, Karelian Science Center
Автор, ответственный за переписку.
Email: stepanov@krc.karelia.ru
Россия, Petrozavodsk, 185910
E. Salnikova
Institute of Precambrian Geology and Geochronology
Email: stepanov@krc.karelia.ru
Россия, St. Petersburg, 190005
A. Samsonov
Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
Email: stepanov@krc.karelia.ru
Россия, Moscow, 119017
Yu. Larionova
Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
Email: stepanov@krc.karelia.ru
Россия, Moscow, 119017
S. Egorova
Institute of Geology, Karelian Science Center
Email: stepanov@krc.karelia.ru
Россия, Petrozavodsk, 185910
V. Savatenkov
Institute of Precambrian Geology and Geochronology
Email: stepanov@krc.karelia.ru
Россия, St. Petersburg, 190005
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