volume 16, issue 4, P259-262 1980
DOI: 10.1144/sjg16040259
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Abstract: A 2 km long sea outfall tunnel and associated site investigation reveal a sequence of gently dipping strata of Productive Coal Measures (Westphalian) intruded by a Tertiary porphyritic basalt dyke, by a Permian volcanic neck and by Permian dykes of alkaline affinities. The stratigraphy and structure represent a westward extension of the north Ayrshire basin.Between January 1975 and September 1977 a sewerage tunnel 1.925 km long, with a lined diameter of 2.90 m, was driven from a 27.91 m deep shaft just east o…

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