The fault of Mig-Món (= half world) in Súria is the SW end of the long anticline of Balsareny. In the geological structure of Súria, the fault of Mig-Món is placed in parallel between the anticline north and the fault of El Tordell.
The rock layers suddenly folds in an anticline that breaks in the axis. Through this diapiric center, grey mudstones emerge here (2nd photo) while gypsum 500 m west; both rock layers covering the salt of geological formation Cardona.
The pit to the potassium salt mine (1st photo) is located on the anticline axis where the salt is nearer to the surface.
The 3rd photo displays the southern flank of the fault as seen from Salipota. Realize, from right to left, the increasing tilt of the strata as they approach to the fault plane.
In the complex tectonics of Súria with its two big faults, Mig-Món and El Tordell, there is the takeover between the anticline of Súria that goes 25 km W-SW and the anticline of Balsareny that goes 18 km E-NE.
[photos Florenci Vallès (1st) and Jordi Badia (2nd and 3rd)]