Geology and ground models - Practical Engineering Geology - page 106

- To the left of the rear scarp, facing the slope, soil was exposed containing 70% angular boulders and

cobbles.

-

The boulder-rich area extended to the left of the distressed area, though this was mostly covered with
concrete. The boulder zone was discrete, V-shaped and wet, with vegetation growing from cracks
(Figure B3-4.4) .

Figure B3-4.3 Relict joints in the rear of the landslide with thick, slickensided kaolin and manganese
dioxide in ll.

Boulder filled river valley dammed with conerete

Flowing water

Distressed
area of slope

Granite

Figure B3-4.4 View of dammed river valley to left of failure.