2026-04-17T08:38:13Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/1813 2022-03-24T23:14:34Z 1582963390870:1582967711045 user-uy

Petrography of Miocene Sandstones In The Pyawbwe Area, Minbu Township Aye Aye Aung Myitta Day Wa Aung Miocene clastic sedimentary rocks exposed in the Pyawbwe area of Minbu Township occupying the western trough of Central Cenozoic Belt. This mollassic sequence consists of Pyawbwe Formation (Aquitanian) and Kyaukkok Formation (Burdigalian) of Upper Pegu Group (Miocene). The present research mainly focuses on petrography of Miocene sandstones. The sandstones of the study area mainly composed of quartz, feldspar, rock fragments, glauconites. chlorite, mica, bioclasts grains, accessory minerals and cements. Petrographically, the majority of sandstone of the study area are arkose, lithic arkose and feldspathic lithicarenite. The sediments of the study area are derived from dissected arc and transitional arc to undissected are provenances. The early diagenetic features such as grains compaction. distortation of mica, broken shell fragments, grains compaction of cacitization and glauconization well marked. Late diagenetic features are formation of concretion and nodules, corrosion of grain and iron oxide pigmentation. 2014 http://hdl.handle.net/20.500.12678/0000001813 https://meral.edu.mm/records/1813