Marros Group
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The Marros Group is the name given to a suite of rocks of Namurian age laid down during the Carboniferous Period in South Wales. These rocks were formerly known as the Millstone Grit Series but are no
Sandstones and interbedded mudstones of the Telpyn Point Sandstone Formation, Haroldston Chins, St Bride's Bay
Pembroke Limestone Group
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The Pembroke Limestone Group is a stratigraphic unit of Courceyan to Brigantian age found in southern Wales and northern Somerset. It forms part of the Carboniferous Limestone Supergroup. These carbon
Steeply dipping oolitic limestone of the Burrington Oolite Subgroup in Burrington Combe