Abstract
Between the years 1869–83 the Triassic sandstone of North-East Ireland was examined and mapped by the Geological Survey under the direction of Hull. The rocks were correlated with those of similar age in Lancashire and Cheshire, the lithological characters described and the exposures noted. Later the Belfast district was resurveyed under the direction of Lamplugh, who suggested, in the Memoir published in 1904, that the Triassic sandstone should be correlated with the St. Bees sandstone rather than with that of Lancashire and Cheshire. Attention was also drawn to the probable incorrect mapping of the Trias near Belfast.

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