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Namurian sandstone is a type of Carboniferous sandstone found in various parts of the UK, particularly in areas like Sheffield, Bristol, and Wales. It’s part of the larger Namurian Stage, a period of the Carboniferous period, which ranged from roughly 331 to 319 million years ago. Namurian rocks, including sandstones, gritstones, mudstones, and Shales, are known for their alternating layers and have been used for various purposes, including building materials and grinding stones.
