Abstract

• The area under investigation lies between Padan (Minbu District) to the north and Yenama (Thayet District) to the south. The exposed stratigraphic sections in the study area are from Cretaceous Formation at the base to Pleistocene Formation at the top. The main structure of the study area is mainly monocline structure. The main target research interests on Shwezetaw Formation, Padaung Formation, and Okhmintaung Formation. To prove similar cyclic arrangement in the lithofacies of the study area, the Markov property and entropy analysis was applied to test for the presence of order in the sequence of structures or descriptive facies in the Minbu Basin. The presence study is based on the outcrop and stratigraphic columnar section. According Markov Chain analysis, shaly sandstone facies to trough-cross bedded sandstone facies, shaly sandstone facies to thick-massive sanstone facies, shale facies to thinly laminated sandstone facies and arenaceous shale facies can be cyclical in Shwezetaw Formation. Shale facies to thinly laminated sandstone facies can be cyclical before pass to carbonaceous sandstone facies. Transition directed from shale facies to thinly laminated sandstone facies skipping sandy shale in Shwezetaw Formation. No transition from sandy shale to thinly laminated sandstone and carbonaceous sandstone to shaly sandstone. Shale facies to sandy limestone facies can be cyclical in Padaung Fomation. Shale facies to massive sandstone facies can be cyclical in Okhmintaung Formation.