2026-06-25T05:13:46Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/00012770 2026-06-01T06:30:38Z 1704332280616 1704332280616:1704445069427

Petrographic and Geochemical Characteristics of Granitic Mylonite and its Tectonic Significance Exposed in the Kabani Area, Wundwin Township, Mandalay Region Nay Win Aung Thu Rein Soe Wai Wai Thin The study area, located in the Kabani region of Wundwin Township, lies within the northern segment of Myanmar’s Central Granitoid Belt, bounded by the Sagaing Fault to the west and the Nwalabo Fault Complex to the east. Detailed field and microscopic investigations reveal that the granitic rocks have undergone intense ductile deformation, resulting in well-developed mylonitic textures such as foliation, lineation, and grain size reduction. The geochemical data, including major, trace, and rare earth elements, indicate that the granitic mylonites belong mainly to the calc-alkaline series and are classified as S-type granitoids. Harker variation diagrams demonstrate a fractional crystallization trend, while trace element plots reveal significant enrichment in LILEs and negative anomalies in HFSEs, suggesting crustal influence and subduction-related signatures. Tectonic discrimination diagrams such as the Rb–(Y+Nb), Nb–Y, and R₁–R₂ plots suggest that the protoliths of these granitic mylonites formed in a syn- to post-collisional tectonic setting. 2025-12-01 https://meral.edu.mm/records/12770