The majority of the TS belt is made up of plutonic and volcanic complexes, such as the Dien Bien, Song Ma, Phia Bioc, Ben Giang-Que Son (BG-QS), Hai Van, and Dong Trau formations, whose dates range from the Permian to the Triassic. The Permian–Triassic plutonic and volcanic ...
The magmatic rocks of the Ben Giang-Que Son complex exposed in the southern part of the Truong Son belt have petrographic compositions including gabbro, gabbrodiorite, granodiorite, and granite. Geochemically, the magmatic rocks are of subalkaline affinity and belong to the high-K calc-alkaline ...