Abstract The southeastern Canadian Shield lies west of the Labrador Sea; north of the Gulf of St. Lawrence, Saint-Narcisse Moraine, and Ottawa River; east of the Harricana Interlobate Moraine and Hudson Bay; and south of Hudson Strait (Fig. 3.1). The Quaternary deposits of this region bear witness, with few exceptions, to events that occurred during and since the Wisconsin Glaciation. The southeastern Canadian Shield area is particularly interesting since it is presumably there that ice from the Labrador Sector of the Laurentide Ice Sheet first accumulated. After coalescing with other ice masses, it subsequently extended to the Canadian Interior Plains and the northern United States. It is also in the centre of the southeastern Canadian Shield that one of the last remnants of continental ice finally disappeared about 6.5 ka ago. Detailed or reconnaissance surficial geology maps have been completed for only about 10% of the area (Fig. 3.38). The principal references for the mapped areas and for regional or topical reports are listed in Table 3.5. Several comprehensive studies deal specifically with particular topics such as glacial limits and weathering zones in Labrador (Ives, 1978; Clark, 1984a), glacier movements of different ages (Veillette, 1986a), the Quebec North Shore morainic systems (Dubois and Dionne, 1985), the Sakami and Harricana moraines and the Cochrane surges (Hardy, 1977, 1982b), glacial lakes Barlow and Ojibway (Vincent and Hardy, 1977, 1979; Veillette, 1988), and postglacial seas (Hillaire-Marcel, 1979). Finally, Prest (1970), Prest et al. (1968), Hillaire-Marcel and Occhietti (1980), Mayewski et al. (1981), Peltier and Andrews (1983), and Parent et al. (1985) provide syntheses on the Quaternary of the area.