Abstract
The rocks described belong to the predominantly siliceous Cork Beds of Late Devonian and Early Carboniferous age. The basal unit of the Cork Beds shows a generally coarsening upwards sequence reflecting the gradual migration of barrier beach over tidal flat environments. After a minor non-depositional phase, this is succeeded by a sequence of offshore subtidal sediments which gradually fine upwards. In the higher parts of the succession subsidence exceeded sedimentation to give deeper water conditions in Visean times. In the area described the Cork Beds successions are much thinner than in areas to the east and northwest. No marked diachroneity is present and thus the existence of a relatively positive area is indicated.
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