carbonate sequence boundary (SB-2) unconformity marked by a downward shift in coastal onlap landward of the depositional-shoreline breakepositional-shoreline Break; however, it lacks subaerial erosion associated with stream rejuvenation and a basinward shift in faciesasinward Shift in Facies. It is interpreted to form when the rate of eustatic d Shift in Facies. It isepositional-shoreline Breakepositional-shoreline Breakf basin subsidence at the depositional-shoreline break, so that no relative fall in sea level occurs at this shoreline position (Kendall and Alnaji, 2002).position (Kendall and Alnaji, 2002).