A.Where a dyke or sill of impermeable rock intrudes through permeable rocks
B.Along Fiords coasts where glaciers terminate
C.Where permeable and impermeable rocks alternate in areas of tilted strata
D.In limestone and chalk escarpments
A.Where a dyke or sill of impermeable rock intrudes through permeable rocks
B.Along Fiords coasts where glaciers terminate
C.Where permeable and impermeable rocks alternate in areas of tilted strata
D.In limestone and chalk escarpments