Tors are outcrops of fractured rocks, commonly granites, rising abruptly from the surrounding hilly terranes, characterized by gentle slopes.
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Migon, P. (2006). Granite landscapes of the world. OUP Oxford.
Palmer, J., & Neilson, R. A. (1962). The origin of granite tors on Dartmoor, Devonshire. Proceedings of the Yorkshire Geological Society, 33(3), 315-340.