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A dyke of Cenozoic age cutting discordantly across complexly folded wackes 
(Augrim quarry, Co. Down, Northern Ireland) . 

The dyke is the 2 - m - wide reddish feature, passing nearly vertically up the rock face behind the person in the foreground.

(Richard Warner, British Geological Survey and Donald Fay, Open University Geological Society, UK.)

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