The cored Zechstein 2 interval of Amoco well 38/24-1, drilled on the southern margin of the Mid North Sea High, contains deformed conglomeratic and brecciated dolostones which are interpreted as displaced distal shelf sediments redeposited in deeper water. The displaced dolostones indicate disruption and sliding of consolidated rock down a slope, accompanied by slumping of semi-consolidated sediment. Minor collapse brecciation also occurred as a result of the partial removal of underlying evaporites. Such features have not hitherto been described from cored wells in the UK North Sea, nor have their petrophysical attributes been discussed. The best reservoir properties occur in the slumped deposits showing plastic deformation. Brecciated beds have unpredictable and wide ranging porosity and permeability values, which are attributable to variable anhydrite cementation and clasts with different textures (and very variable fabric). Displaced Zechstein carbonates on or at the foot of unstable palaeo-slopes, for example in the vicinity of the Mid North Sea High, can develop moderately attractive reservoir characteristics, and might in places be thick enough to be of economic importance.