Fig. 23

Fragmentation and comminution of limestone in the rock avalanche deposit A Overview of outcrop at Isla Casti. A major fault with a thick gouge (fg) is accompanied by parallel faults and splaying faults with thinner gouge. Top of outcrop is a perched river bed (rb). B Detailed view of the outcrop at Isla Casti. Brecciation of Quinten Limestone occurred by multiple generations of veins. Vein filling is light colored and consists of comminuted limestone. C Quarry outcrop at Carnifels. A distinct band with larger angular blocks cuts across brecciated limestone. Fault gouge is developed along the contacts. Photos A. Pfiffner