1/100 f/6.3 21.0 mm ISO 100

Canon EOS 600D

EF-S15-85mm f/3.5-5.6 IS USM


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Keywords

beach
shales
'Farewell Rock'
marine band
Namurian
sandstones
Carmarthenshire
fault
Wales
geology
coast
cliffs
rocks
sand
Telpyn Point Sandstone


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Pembrokeshire

Cliff section east of Amroth 2

Cliff section east of Amroth 2 

Telpyn Point to Amroth

Between Amroth and Telpyn Point, magnificent cliff sections expose the upper Namurian sequence of deltaic channel-fill sandstones and intervening shale sequences.

About 1.5 km east of Amroth, this photo shows the sequence gently dipping to the west. At the top of the cliff are brown sandstones: the lowest in the Coal Measures sequence. Below this are dark mudstones of the Gastrioceras subcrenatum Marine Band which marks the base of the Coal Measures. This is underlain by the Telpyn Point Sandstone (formerly designated as the Upper Sandstone), the uppermost main sandstone in the Namurian, and originally known as the 'Farewell Rock', so called because exploratory boreholes and shafts for coal penetrating the sandstone would no longer encounter any workable coals. Underlying the sandstone is a shale sequence.

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