Dolerite Dyke In Icart Gneiss 4 – Contrasting rock textures at Moulin Huet Bay, Guernsey, Channel Islands, between coarse-grained Icart Gneiss bedrock with its squashed orange feldspar crystals on the left and an intrusive dolerite dyke with its smooth, grey-green homogenous texture on the right.
Jessica's Nature Blog 