Granitoids of the Olekma Complex in the Selenga–Stanovoi superterrane of the central Asian mobile belt: Age and tectonic position

Granitoid massifs of the Olekma Complex form a large synonymous magmatic belt, which is located in the southern part of the Selenga–Stanovoi superterrane and is traceable in the northeasterly direction for over 700 km. According to U–Pb geochronological data, they are 358 ± 2 Ma old. The geochemical data indicate their collisional nature. The massifs were most likely formed during collision between the Selenga–Stanovoi superterrane and structures of the Baikal mountainous system and its terminal formation stage as a single structural block.