Decoupling of O and Pb isotope systems of uraninite in the early Proterozoic Conglomerates in the Elliot Lake district

Among the various geochemical signatures in uraninite, high Th content is the only original signature preserved since detrital deposition of uraninite. Both Pb and O isotope systems have been disturbed in various degrees by later events. The coupling/decoupling of the composition, Pb and O isotope systematics of uraninite reflect the protracted mineralization/remobilization history of the oldest uraninite.