SnowTerm

rôche moutonnée

rôche moutonnée

1. Roche moutonnée, (French: “fleecy rock”)English sheepback, or sheep rock, glaciated bedrock surface, usually in the form of rounded knobs. The upstream side of a roche moutonnée has been subjected to glacial scouring that has produced a gentle, polished, and striated slope; the downstream side has been subjected to glacial plucking that has resulted in a steep, irregular, and jagged slope. The ridges dividing the upstream and downstream slopes are therefore perpendicular to the general flow direction of the former ice mass
https://www.britannica.com/science/roche-moutonnee

2. A roche moutonnée is a rock hill shaped by the passage of ice to give a smooth up-ice side and a rough, plucked and cliff-girt surface on the down-ice side. The upstream surface is often marked with striations. Whalebacks are sister forms

http://www.landforms.eu/cairngorms/roche%20moutonees.htm

Roche moutonnée eng text.png

By Jasmin Ros - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=31492543

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Date of creation
07-Jun-2018
Accepted term
07-Jun-2018
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