Erosion of pebbles from conglomerate, Auchmithie, Angus
Introduction
The photograph on this page of Erosion of pebbles from conglomerate, Auchmithie, Angus by Adrian Diack as part of the Geograph project.
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Image: © Adrian Diack Taken: 23 Aug 2024
The area of the wave-cut platform shows pebbles or clasts, deposited as river-borne sediment during the Devonian Period, which are still embedded "in situ" in the conglomerate rock, whereas loose shingle, nearer the cliffs, represents similar pebbles that have been more recently eroded from the surface of the wave-cut platform or have fallen from the cliffs above. As the pebbles are mostly composed of hard rocks like quartzite and jasper, they have an enduring history, with erosion from their matrix marking the most recent phase of their long geological journey.
