Ice-Cored Moraines in South-Western Ellesmere Island, N.W.T., Canada

• Published in: Journal of Glaciology
• Main Author: Souchez, R. A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1971
• Subjects: Ellesmere Island; Ice cap; Journal of Glaciology
• Online Access: http://dx.doi.org/10.1017/s0022143000013216; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000013216

Abstract The north-west margin of the main ice cap in south-western Ellesmere Island is fringed by ice-cored moraines. The formation of these moraines seems to be more complex than simple upwarping of the foliation bands at the margin of the ice cap. At one locality, where outer and inner zones can be distinguished on the basis of lithological composition, debris in the outer zone is composed of material from farther back under the ice cap than debris in the inner zone. In another locality, localized ridges cross each other independently of the trend of the main ridge. The time required to obtain the quantity of debris forming the moraine at the ice surface is estimated to be between 65 and 300 years.