Mesozoic age of granitoids from the Beket complex (Gonzha block within the Argun terrane of the Central-Asian Fold Belt) |
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| Authors: | A B Kotov A A Sorokin E B Sal’nikova A P Sorokin A M Larin S D Velikoslavinskii T V Belyakov I V Anisimova S Z Yakovleva |
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| Institution: | 1.Institute of Precambrian Geology and Geochronology,Russian Academy of Sciences,Saint Petersburg,Russia;2.Institute of Geology and Natural Resource Management, Far East Branch,Russian Academy of Sciences,Blagoveshchensk,Russia |
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| Abstract: | U-Pb geochronological results confirm the Mesozoic age (124 ± 1 Ma) of the Beket granitoid complex, previously interpreted
as being one of the markers amongst the Early Proterozoic magmatic complexes within the Amur superterrane (microcontinent)
of the Central Asian Fold Belt. This implies that the structural and metamorphic amphibolite facies overprints documented
either in the Beket granitoids or Gonzha host rocks are evidently Mesozoic rather than Early Proterozoic in age. |
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