Three distinct layers of chalk and boulder clay at Dane's Dyke, Flamborough, Yorkshire, UK
Looking upwards from the foreshore, the first of the three distinct layers is the 70-100 million year-old bedrock (Upper Cretaceous Flamborough chalk) which has been tectonically and periglacially deformed. The middle layer (partially obscurred by grass) is composed of coarse glacial lacustrine deposits and the top layer is composed of deposits (till or boulder clay, glacial sand and gravels) left by glaciers 18000 years ago. The grass slope with trees is part of Dane's Dyke which near to the sea was formed by river erosion.
Size: 3600px × 5400px
Location: Dane's Dyke, Flamborough, Yorkshire, UK
Photo credit: © Peter J. Hatcher / Alamy / Afripics
License: Licensed
Model Released: No
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