Truncated spur

Truncated spurs can be found within mountain ranges, along the walls of river valleys, or along coastlines.

[1][2] Before glaciation, relatively immature rivers display a pattern of interlocking spurs.

This is a geologically active process where the glacier continues to gradually erode the valley sides.

These triangular facets provide evidence for recent fault movement and are used in seismotectonic analysis.

[3] Classic examples of faceted spurs can be found all along the Central Wasatch Fault, north-central Utah.

Bridal Veil Falls in Yosemite National Park . Either side of the waterfall are the flat vertical faces of the truncated spurs
Faulted southeastern side of Svyatoy Nos peninsula, Lake Baikal - active faulting shown by faceted spurs forming triangular facets