Sandstone with curious spherical-to-ellipsoidal "rotten" zones that weather out into Swiss-cheese type holes.
Arkose from the Devonian-aged Old Red Sandstone. Found in Northern Ireland on the beach at Cushendun.
Volcanic rock at crazy storm beach near Eshaness. Devonian aged ignimbrite.
Mafic to intermediate composition agglomerate from a Devonian-aged volcano at Eshaness, Shetland.
Sea stacks along the coast of Shetland north of Eshaness - the rock is Devonian volcanics (lava + agglomerate).
Lava flow (with interesting 'mega-swirl' feature) over agglomerate. Devonian in age.
Primary sedimentary structures are visible. Interpret the environment of deposition. Interpret the geologic history subsequent to deposition.
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