The rocks at Fall Bay are arrayed like the riffled pages of a book. Layer after layer of Carboniferous Limestone is sequentially spread out across the west side of the bay. Each layer has an observably different texture; some are bioturbated with bioclasts and fossils such as fragmentary crinoids and corals. The bedding planes of some strata have deeply sculptured surfaces from weathering and bioerosion. Lichens, barnacles and limpets colonise the rocks and take advantage of the meagre shelter offered by cracks, crevices, and solution hollows.
Peering into the rock pools on the Worms Head Causeway in Gower reveals colourful kaleidoscopic patterns of common British seaweeds beneath the rippled clear water.
The Seasearch Guide to Seaweeds of Britain and Ireland produced by Francis StP. D. Bunker, Christine A. Maggs, Juliet A. Bridie, and Anne R. Bunker, published by the Marine Conservation Society in 2010, ISBN 978-0-948150-51-7, is a really good book jam-packed with wonderful photographs and clear descriptions of seaweeds to aid identifications.
I walk in all weathers and always carry a camera. I like to record what I see and the changes I notice even if the conditions are not always favorable, as on this occasion. This March day on Charlton Down was marked by hazy sun, cold wind, and the merest hint of spring. Ploughed fields were white with chalk and flint nodules. Short shoots sprouted from the furrows. Sugar beet greened some fields. Trees bare but for lichen cast weak shadows on the turned soil, while neat laid hedges divided the vista. Farms and barns topped the horizons. Rusting agricultural equipment stood isolated along the pathways. A rolling misty landscape of intersecting curves surrounded my hill-top village.
The first selection of photographs taken at Kimmeridge Bay in Dorset, England, yesterday (27 March 2015) showing details of the natural patterns, textures, and colours of the rocks. The rocks are described as rhythmically inter-bedded blocky, organic-poor mudstone and fissile, organic rich shale.
For information about the geology of this location look at:
John C. W. Cope Geology of the Dorset Coast, Geologists’ Association Guide No. 22, Geologists’ Association, 2012, pp 159-167, ISBN978 0900717 61 1.
M. A Woods (compiler) Geology of south Dorset and south-east Devon and its World Heritage Coast, British Geology Survey, NERC, 2011, pp 61 – 67, ISBN 978 085272654 9.