QUATERNARY GEOLOGY OF THE SNEGAMOOK LAKE AREA, CENTRAL MINERAL BELT, LABRADOR 1

Quaternary mapping and geochemical sampling (lake sediment and till) were carried out in the Snegamook Lake area of Labrador. Upland areas have little glacial cover and the bedrock is glacially sculpted. Lowlands and valleys contain glaciofluvial sediments, mainly in the form of subaerially deposited outwash. Till deposits of varying thickness blanket the rest of the landscape. In areas of granitic bedrock, till is thick and hummocky, and contains abundant large boulders. East of the Seal Lake Group red sandstones and shales, the till has a red hue due to its derivation from this bedrock source. Glacial landforms include eskers, drumlins and minor moraines. The major ice-flow direction was northeast, followed by a later, more topographically controlled flow (northeast to east-southeast); the secondary flow likely occurred after the last glacial maximum. Regional flow trends are similar to those described for the study area, and an ice divide is implied for the Naskaupi River area. A re-evaluation of the Sebaskachu Moraine indicates that no major deglacial stillstands are recorded for this region.