Smarts Quarry

Smarts Quarry is a Site of Special Scientific Interest (SSSI) in Carmarthenshire, Wales, designated in 1987 for its geological features.

SSSI
Smarts Quarry SSSI is located approximately 0.5 mi east-north-east of Mynydd-y-Garreg, and covers 2.6 ha.

The SSSI citation for Smart Quarry specifies the importance of "abundant, bivalve produced, stellate feeding traces on a bedding surface" within the Namurian quartzite of the quarry. The citation finds such traces unique within the Namurian basal grits of South Wales and suggestive of an estuarine rather than a shoreline sedimentary deposition of the quarry stone.