Heterolytic tide-dominated sedimentary facies and depositional environment: An Example from the Boka Bil formation, Sitapahar anticline, Bangladesh oleh Sohag Ali, Numair Ahmed Siddiqui, AKM Eahsanul Haque, Nisar Ahmed, Mohamed A.K. El-Ghali, Md Yeasin Arafath, Mizanur Rahman, Mrinal Kanti Roy, Alidu Rashid