The sedimentology and paleogeography of glacial Lake Champagne, southern Yukon Territory.

摘要

Glacial Lake Champagne was a major feature of the deglacial landscape of southern Yukon Territory. The sedimentology reflects two major depositional environments; the settling of sediment laden plumes of meltwater from the surrounding ice sheets, and deposits of density underflows. Initial stratigraphic and geomorphic evidence suggests that much of the lake was bounded by active or stagnant ice of the Cordilleran ice sheet. There is one well preserved stand of the lake at 765 m, and a less well preserved stand 725 m above sea level. The 765 m stand of the lake covered approximately 2425 km