Photographs of Erosional Forms
Erosion By Water Erosion By Ice

Spindle erosional s-forms in gneiss, Watson River sill.

Pluck face of roche moutonnee on exposed amphibolite dike.

Scallop erosional s-forms in gneiss.

Close view of crescentic gouges formed on gneiss (ice flow is from right to left)

Close-up view of interwoven sichelwannen s-forms.
Down-ice view of crescentic gouges.
Subglacial Erosion


Sculpted and superimposed erosional s-forms on the Watson River bedrock sill. Although similar to fluvial erosional forms, these forms display nested relationships, varied orientations, and are of sizes that suggest an origin by subglacial processes.