More pictures of rock textures and patterns seen on the shore at Clarke head, near Parrsboro, Nova Scotia. At this site the fault zone sedimentary rocks include Blomidon Formation Triassic red sandstone and siltstone with strata laid down in repeating cycles, and preserved water ripple marks much in evidence. Igneous North Mountain Formation basalt from Jurassic period rift volcanism is present high in the cliff and not shown here for lack of accessibility. Light grey sedimentary Windsor Group Carboniferous limestone strata is also present. Large blocks of Precambrian metamorphic rock have been brought up from deep down by the faulting. These blocks, sometimes huge, are found in the breccia and include garnet-grade schist. Gypsum is common in the breccia, as boulders and as matrix. The boulders from the mega-breccia weather out from the cliff deposits and lie together with numerous smaller boulders, shards, and fragments littering the beach, varying in colour and composition as you walk along the waterline.
Nova Scotia Field Guide, Arthur D. Storke Memorial Expedition, Department of Earth and Environmental Sciences, Columbia University in the State of New York, August 23 to September 2, 2012.