Figure 5. Reconstruction of Sabah during Early Miocene to Mid Miocene shows a change in depositional environment from deep-water to a shallow deltaic setting to the NW and SE of Sabah. Limestones formed on structural highs during relatively quiescent times in the Early Miocene. The associated major uplift and erosion provided sediment supply to the deltaic to shallow marine Middle to Upper Miocene syn-rift successions.