Granitoids of the Tyrma-Bureya complex in the northern Bureya-Jiamusi superterrane of the Central Asian fold belt: age and geodynamic setting

摘要

According to U-Pb dating, the granitoids of the Tyrma-Bureya complex in the northern Bureya-Jiamusi superterrane of the Central Asian fold belt are not of Paleozoic, as previously thought, but of Mesozoic age (Nizhnyaya Stoiba massif, 218 ± 2 Ma; Talakan and Ust'-Dikan massifs, 185 ± 1 Ma). They formed at the early stages of collision between the North Asian and Sino-Korean cratons and the intervening Amur superterrane.