Polurrian Rocks 9 – Layers and red stripes in wet Devonian Period metasedimentary slate rock from north of the Lizard Boundary Fault at Polurrian Cove in Cornwall
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Polurrian Rocks 9 – Layers and red stripes in wet Devonian Period metasedimentary slate rock from north of the Lizard Boundary Fault at Polurrian Cove in Cornwall