2026-06-24T01:58:49Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/00012772 2026-06-01T06:58:58Z 1704332280616 1704332280616:1704445069427

Petrogenetic Study on Metapelitic Rocks Exposed at Sagaing-Kyaukta Area, Sagaing Township, Sagaing Region Tin Zaw Oo Sagaing-Kyaukta area belonging to part of Mogok Metamorphic Belt (MMB), that experienced medium-pressure and high temperature metamorphism related to the tectonic evolution of the Sinoburma Ranges and related Sagaing Fault of the Central Myanmar Basin (CMB). Field study is made on April 2020 and 25 representative samples are collected for the petrographic study. For detail petrogenetic analysis 15 thin sections are cut from collected samples. Two lithologically stacked metamorphic units contain hornblende gneiss and garnet gneiss that record thermal conditions of the upper amphibolite (structurally upper unit) and the granulite facies (structuraly lower unit). The paragenesis of Kfs + Grt + Bt represent >600ºC/3.8-5.5Kbar and Grt + Bt + Sil represent up to 720ºC/5.5-7.1 Kbar (Ky-type geotherm). So, the research area falls in upper amphibolite to granulite facies and medium P/high T facies series. Therefore, western part of MMB is imposed by medium pressure and fairly high temperature regional metamorphism. 2025-12-01 https://meral.edu.mm/records/12772