Early Mesozoic age of protolites of metasedimentary rocks from the Tukuringra terrane in the Mongolian-Okhotsk fold belt: Results of LA-ICP-MS U-Pb geochronological studies

摘要

This report presents the results of U-Pb geochronological LA-ICP-MS studies of detrital zircons from metasedimentary rocks of the western part of the Tukuringra terrane. The obtained data show that the Algainskaya, Garmakanskaya, and Teploklyuchevskaya series in the western part of the Tukuringra terrane are not of Middle Paleozoic but of Early Mesozoic age. It is shown that the main sources of clastic matter for these formations were Late Precambrian, Paleozoic, and Late Triassic-Early Jurassic complexes of continental massifs of the Amur superterrane.