These pictures show Caswell Bay (Gower Peninsula) Carboniferous period limestone and mudstone rocks in close-up, showing natural patterns and textures of stratigraphic layering and fracturing, coloured mineral inclusions, acid rain and wave-action weathering, and encrustations by bio-films and marine littoral invertebrates. The rocks include Caswell Bay or Gully Oolite, High Tor Limestone, and Caswell Bay Mudstone.
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