Metamorphic rocks from the north-eastern part of the Ereendavaa terrane (Eastern Mongolia) : oleh Tserendash Narantsetseg, Yuan Chao, Wang Tao, Ren Zhongyuan, Li Pengfei, Zhang Le, Guo Lei, Tong Ying, Demberel Orolmaa, Altanbaatar Battushig, Orosoo Baatarchuluun, Tuya Idermunkh, Jargalsaikhan Tumendelger