Early Vendian Age of Multiple Gabbro-Granite Complexes of the Karalon-Mamakan Zone, Baikal-Muya Belt:New U-Pb Zircon Data

摘要

The Karalon-Mamakan zone is situated in the eastern margin of the Baikal-Muya belt (Fig. la) and consists of the Mamakan and Karalon segments. Two multiple intrusive complexes, the Early Proterozoic Muya gabbrodiorite and Middle Proterozoic Vitim diorite-granite complexes, were distinguished by Salop in the Karalon segment (Middle Vitim mountainous region).