Brofiscin Quarry, Groes Faen
Also within
Geology & landscape
Geological Period: Carboniferous · Rock Type: Carboniferous Limestone, Limestone
Description
Description This site shows an important section through the Lower Carboniferous Limestone Black Rock Group, including the Brofiscin Oolite. This latter unit is of stratigraphic importance as it divides the Black Rock Group in South Wales. Its presence provides evidence for the migration of an oolite shoal from north to south across the area during Courceyan times. This site has superlative sections, showing a variety of sedimentary features consistent with the southward progradation of this shoal, within a stratigraphically important limestone sequence.