Glacial erratics on the Arctic Ocean margin of North Greenland: implications for an extensive ice-shelf

Abstract

Based on rock type and mineralogy, the Greenland shield is the most likely source of the erratics and derivation from an expansion of the Inland Ice around eastern Peary Land the most logical glacial model. However, such a provenance contravenes with the presently available on-shore data which indicate an eastwards Weichselian ice flow along the coast. Instead of invoking a rather complicated glacial history for Peary Lane, involving different land ice regimes, an alternative glacial model based on an extensive Greenland - Ellesmere Island ice-shelf is outlined. -from Author