Stagnation Glacier proglacial area

The proglacial area is of considerable interest, but lack of time precluded detailed study. The whole area is sediment-covered, comprising basal till and fluvially reworked sediment with size-fractions ranging from clay to boulder. This sediment covers areas of dead ice, resulting in a pitted surface with occasional kettle ponds. Specific landforms include coarse bouldery flutes and hummocky (ice-stagnation) moraines. Only one small patch of the underlying bedrock was observed, and this was heavily striated.

Stagnation Glacier proglacial area
An aerial view of the proglacial area of the glacier, showing the extent of glacier recession since the Little Ice Age moraines were formed. A wide range of sedimentary processes occurs in this area, much of which is underlain by slowly melting ice.
Stagnation Glacier proglacial area
With Stagnation Glacier in the left background, an unnamed glacier to the east shows similar lateral moraines and an active proglacial area.
Stagnation Glacier proglacial area
Aerial view of the tall ridge of ice-cored debris that forms the right-lateral moraine of Stagnation Glacier, deposited when the ice emerged from the confines of its narrow valley
Stagnation Glacier proglacial area
A clear distinction exists between the Little Ice Age moraine, with its ice core, and the active part of the glacier. Small plants are slowly becoming established on the ice-cored debris.
Stagnation Glacier proglacial area
An area of hummocky moraine and crudely developed flutes seen from the glacier snout. Eclipse Sound is in the background.
Stagnation Glacier proglacial area
A mixture of sediment directly deposited from the glacier (the hummocky terrain in the foreground) and stream-reworked sediment (forming the ridges on, and extending from, the ice) characterises the immediate proglacial zone of the glacier.
Stagnation Glacier proglacial area
The main stream outlet from the snout of Fountain Glacier. Up-valley it flows close to the right-hand ice margin, and picks up suspended sediment along the way.
Stagnation Glacier proglacial area
A large embedded boulder or outcrop of gneiss, showing an upper striated surface, on which Brian Moorman is sitting.
Stagnation Glacier proglacial area
Ice-marginal stream channel, abandoned as the flow of water has migrated to the left and undercut the glacier margin and become subglacial.
Stagnation Glacier proglacial area
The ice-marginal stream channel has a debris flow superimposed upon it. The coarser material of the debris flow has come of the ice-cored moraine to the right.
Stagnation Glacier proglacial area
Evidence of dead ice underlying the proglacial area is indicated by the pitted nature of the terrain. Melting of the dead ice has produced a number of kettle hole ponds.
Stagnation Glacier proglacial area
A prominent ridge of basal glacial debris, a flute, was formed parallel to ice flow, and is one of several in the proglacial area.
Photos Michael Hambrey, July 2014