Abstract
New paleomagnetic and isotopic-geochronological data obtained for Neoarchean Onega granulite complex, were used to reconstruct the position of the Karelian craton in the Neoarchean supercontinent Kenorland. Geological correlations were made for the Karelian, Kaapvaal, Pilbara, Superior, and Slave cratons. Comparison of independent geological and paleomagnetic data allowed us to propose a new configuration of the Neoarchean supercontinent Kenorland. The position of the ancient core of the Karelian craton (the Vodlozero terrane), located in the North-Western margin of the supercontinent structure, reconstructed based on the previously paleomagnetic data for the Neoarchean Panozero sanukitoid massif and new one for granulite of Onega complex.
Highlights
New paleomagnetic and isotopic-geochronological data obtained for Neoarchean Onega granulite complex, were used to reconstruct the position of the Karelian craton in the Neoarchean supercontinent Kenorland
Comparison of independent geological and paleomagnetic data allowed us to propose a new configuration of the Neoarchean supercontinent Kenorland
Б. Гольцы и показано, что время раннего гранулитового метаморфизма оценивается в 2739±17 млн лет, позднего — в 2701±14 млн лет Таблица 2 U-Th-Pb изотопные данные для цирконов из основных гранулитов (образец No BD-10-9), мыс Черный
Summary
New paleomagnetic and isotopic-geochronological data obtained for Neoarchean Onega granulite complex, were used to reconstruct the position of the Karelian craton in the Neoarchean supercontinent Kenorland. Вместе с тем в составе этого террейна известны неоархейские гранулиты (онежский или карицкий по [Костин, 1989] гранулит-эндербит-чарнокитовй комплекс), палеомагнитные данные о которых крайне важны для тестирования геодинамической реконструкции неоархейского суперконтинента Кенорленд. В пределах неоархейского Карельского кратона известны следующие гранулитовые (гранулитэндербит-чарнокитовые) комплексы
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