The research area is located at coordinates 0 14'56.40" LU -0 12'14.52" LS and 100 31'4.80" BT-100 3346,68" BT. Administratively the research area belongs to Nagari Muaro Paiti, Kapur IX District, Lima Puluh Kota Ragency, West Sumatra Province The purpose of this research is to model the facies distribution and depositional environment on the Sihapas formation, as well as to find out how the po…