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

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[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.