| Publication Note | Read before the Society, 15 & 29 November 1843, and published as: Sedgwick, A. "On the Older Palaeozoic Rocks of North Wales", 'Quarterly Journal of the Geological Society of London', vol 1 (1845), pp1-22. The paper was a continuation of an earlier piece, which can be found in: Sedgwick, A. "Outline of the Geological Structure of North Wales'', 'Proceedings of the Geological Society of London', vol IV (1843-1844), pp212-224. |