Abstract

• The present study area occupies a small portion of the Minbu basin. The study area is mainly underlain by mollassic clastic sedimentary rocks of Pegu Group in Tertiary Age. The stratigraphic units, namely, the Shawezetaw Formation (Early Oligocene), the Padaung Formation (Middle Oligocene) and the Kyaukkok Formation (Middle Miocene) are exposed in the study area. The Shwezetaw Formation consists of fine to medium grained, grey to yellowish brown coloureds and stone, which are Lithic Arkose and Feldspathic Litharenite in composition. The diagenesis of the study area can be categorized into two main stages such as early diagenesis and late diagenesis. Packing of the sandstone is largely dependent on the grain size, shape and sorting. The Shwezetaw Formation has four lithofacies representing two lithofacies association. They are delta plain facies association and delta front facies association. The Shwezetaw Formation was deposited in deltaic depositional environment during a regressive phase of sea level.