S3: Mineralogy, Petrology and Economic Geology of Northeast Asia (Special Session)

[S3-05] Permo-Triassic magmatic and metamorphic activities in Kannak complex, Kon Tum Massif, central Vietnam

*Masaaki Owada¹, Yasuhito Osanai², Nobuhiko Nakano², Ippei Kitano², Tatsuro Adachi² (1. Yamagucni Univ. Sci., 2. Kyushu Univ.)

Keywords:Kon Tum Massif, granitic rocks, pelitic gneiss, monazite EMP dating, zircon U–Pb dating

The Kon Tum Massif, central Vietnam, contains various types of magmatic and metamorphic rocks, the latter including ultrahigh- to high-temperature units. The Late Permian–Early Triassic metamorphic rocks in the massif correspond with the metamorphic characteristics of a collision between the Indochina and South China cratons. Combined with previously reported age dating, the new data unravel the high- to ultrahigh-temperature metamorphism and crustal melting occurring from 260 to 240 Ma.