Garth Bank Quarry
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Geology & landscape
Mining / Industrial: Quarry · Geological Period: Ordovician, Silurian
Landscape processes: Glacial
Description
Description This disused quarry is an important site showing a regionally important unconformity between basal Silurian strata and late Ordovician rocks. Rawtheyan-age marine siltstones, with a brachiopod fauna, are overlain by pebbly, rippled sandstones of the Cwm Clŷd Formation, the basal Llandovery rock-unit in this area. Remarks: Sometimes known as Cwm Clŷd Quarry.