Glacial History of the Eastern Mealy Mountains, Southern Labrador

• Published in: ARCTIC
• Main Author: Gray, James T.
• Format: Article in Journal/Newspaper
• Language: English
• Published: The Arctic Institute of North America 1969
• Subjects: Evenki; Mealy Mountains; Arctic; Ice Sheet
• Online Access: https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66249

Two continental glaciations, both considered Wisconsin in age have been noted in the eastern Mealy Mountains. The earlier ice sheet reached a minimum elevation of 3,000 feet (925 m.) and may have overtopped the summit plateaus of 4,000 feet (1,240 m.). The ice moved from west to east. The vertical limit of the later ice sheet varied from 2,300 feet (710 m.) in the west to 1,800 feet (555 m.) in the east. Cirques were carved prior to both glaciations. The development of active glaciers with pronounced end moraines, subsequent to the second and later glaciation, was restricted to cirques oriented towards the east and southeast. Cirque glacier re-advances have probably not occurred within the last few hundred years. Histoire glaciaire des monts Mealy orientaux, Labrador méridional. Dans les monts Mealy orientaux, on a distingué deux glaciations continentales, toutes deux considérées comme d'âge wisconsinien. La plus ancienne calotte atteignait une altitude minimale de 3000 pieds (925 m) et a peut-être recouvert les plateaux sommitaux de 4000 pieds (1240 m) d'altitude. La glace se déplaçait d'ouest en est. La limite verticale de la calotte plus récente variait de 2300 pieds (710 m) dans l'ouest à 1800 pieds (555 m) dans l'est. Des cirques ont été creusés antérieurement aux deux glaciations. Postérieurement à celles-ci, le développement de glaciers actifs à moraines terminales prononcées s'est limité aux cirques orientés vers l'est et le sud-est. Aucune réavancée de glacier de cirque ne s'est probablement produite au cours des derniers siècles.