Within Pembrokeshire the Carboniferous Limestone forms the spectacular coastal cliffs at St Govan’s Head along from which are features such as Huntsman’s Leap and the Green Bridge of Wales, a natural arch.
limestone | Carboniferous | Limestone | Carboniferous Limestone | Limestone Coast | Corallian Limestone | Styrian-Lower Austrian Limestone Alps | Magnesian limestone | Limestone, West Virginia | Limestone pavement | limestone pavement | Limestone High School | Limestone County | Keystone (limestone) | Indiana Limestone | Indiana limestone | Bedford limestone | Anamosa Limestone |
A Geodiversity audit of the site recorded pale to dark grey well bedded Carboniferous Limestone dipping consistently southwards with a small area of overlying horizontally bedded buff-coloured Jurassic oolitic limestone forming an angular unconformity.
The formation appears to have been laid down in a tropical environment somewhat similar to the Bahamas today, and on the basis of fossil evidence an Early Jurassic (Sinemurian) age has been proposed for the Gibraltar Limestone, though in appearance it has a strong resemblance to the Carboniferous Limestone that underlies large parts of England and Wales.
All occur where the river cuts a gorge through the Carboniferous limestone between the hills of Kisdon and Rogan's Seat.