Shale gouge layer in fault zone within sandstone/shale Carboniferous sequence (Round O Quarry, Lancs, UK). This normal fault has displacement of 15m, and the gouge is derived from offset 8m shale (see sketch). This is a colour version of figure from Childs et al. 1997, NPF volume http://pic.twitter.com/F9sgErxrd4
— John J Walsh (@johnjfwalsh) November 11, 2017
via Twitter https://twitter.com/johnjfwalsh
November 11, 2017 at 09:33PM
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