Current crescents from the Herreria Formation (Lower Cambrian) of northern Spain |
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Authors: | GERAINT OWEN |
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Institution: | Department of Geography, University College of Swansea, Singleton Park, Swansea, SA2 8PP, UK |
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Abstract: | Current crescents are well preserved on the upper surfaces of quartzite beds in the Lower Cambrian Herreria Formation of the Cantabrian Mountains in northern Spain. Within a sequence of nearshore deposits, the current crescents are interpreted as having formed by flow separation of wave backwash around obstacles on a beach. The obstacles are not preserved and are inferred to have been perishable organic material, such as stranded algae or jellyfish, which subsequently decayed. |
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