nées An elongate mound of bedrock worn smooth and rounded by glacial abrasion. : Ces paysages de "roches moutonnées" sont typiques de l'activité glaciaire. Compare Italian rocca, Spanish roca, as well as English rock and Breton roc'h. Pronunciation: (rÅsh' mt"n-Ä' Fr. a rounded, glacially eroded rock outcrop, usually one of a group, resembling a sheep's back. Glacier erosion has produced this streamilined bedrock mass projecting above the waters of Glacier Bay, Glacier Bay National Park, Alaska. Pronunciation . ... roche moutonnée â¦ See more. An elongated, rounded, asymmetrical, bedrock knob produced by glacier erosion. The upstream surface is often marked with striations. Definition: 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 small rise with wooden benches represents a good example of a glacial erosion feature known as roche moutonée (' sheep rock'). Geol. A small bare outcrop of rock shaped by glacial erosion, with one side smooth and gently sloping and the other steep, rough, and irregular. Roche moutonnée definition is - an elongate rounded ice-sculptured hillock of bedrock. Roche moutonnée, (French: âfleecy rockâ) 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. a bare hummock of rock, usually smoothed on the upstream side and grooved on the other by glacial actionOrigin of roche â¦ Roche moutonnée near Myot Hill, Scotland In glaciology , a roche moutonnée (or sheepback ) is a rock formation created by the passing of a glacier . roche moutonnée: Meaning and Definition of. rôsh m-tô-nÄ'), â Geol. néesâ² Geol. Whalebacks are sister forms. From Old French roche (variants: roce, roke, roque), from Medieval Latin rocca, from Vulgar Latin *rocca, of uncertain origin, probably Celtic and most likely pre-Latin. Cnapan aâ Mheirlich, Glen Avon. Roche Moutonnée . In glaciology, a roche moutonnée (or sheepback) is a rock formation created by the passing of a glacier.The passage of glacier ice over underlying bedrock often results in asymmetric erosional forms as a result of abrasion on the 'stoss' (up-ice) side of the rock and plucking on the 'lee' (down-ice) side. Also called ; IPA : /ÊÉÊ/ Roche moutonnée definition, a rounded, glacially eroded rock outcrop, usually one of a group, resembling a sheep's back. Find definitions for: roche mouâ¢tonâ¢née. Une petite élévation, où se trouvent des bancs en bois, représente un bon exemple d'une entité appelée roche moutonnée (d'après sa forme de mouton couché). It has a gentle slope on its up-glacier side and a steep- to vertical-face on the down-glacier side.