Garrettstown Strand Rocks – Part 1 – Jessica's Nature Blog

These striped grey and yellow patterns in the bedrock at Garrettstown Strand in County Cork are made by alternating layers of sand and mud, sometimes in rippled layers. They belong to the Cork Group of rock strata, most probably the White Strand Formation which is comprised mainly of Namurian (Upper Carboniferous) sandstones inter-bedded with brittle, commonly pyritic grey-black mudstones.

REFERENCE

Sleeman, A. G. and Pracht, M. et al (1994) Geology of South Cork: a description of South Cork and adjoining parts of Waterford to accompany the bedrock geology 1:100,000 scale map series, Sheet 25, South Cork, Geological Survey of Ireland, White Strand Formation pp 23-24.