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Age, Origin and Significance of the Raised Gravel Barrier at Church Bay, Rathlin Island, County Antrim

R. W. G. Carter


The raised beach in Church Bay on Rathlin Island, Co. Antrim is shown to be a solitary gravel barrier thai formed around 12000 to 13000 years ago as a result of erosion of the chalk outcrops to the south. The beach sediments exposed in a back barrier gravel pit show the progressive development of a coastal structure under occasional washover. The barrier suggests a sea-level several metres above present, which is consistent with late-Midlandian evidence from elsewhere on the Irish coast, but suggests major land-sea changes must have occurred between Rathlin and the northwest shelf of the British Isles.

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Copyright © Geographical Society of Ireland | Home | Contact us | ISSN: 0075-0778 (Print), 1939-4055 (Online) | Last Update: November 10, 2021