ROCK GLACIER


Meaning of ROCK GLACIER in English

Tonguelike body of coarse rock fragments, found above the timberline on mountains, that moves slowly down a valley.

The rock material usually has fallen from the valley walls and may contain large boulders; it resembles the material left at the end (terminus) of a true glacier . A rock glacier may be 100 ft (30 m) deep and nearly a mile (1.5 km) long.

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.