hltonD eFF nd wrgoldD wF nd tokesD gFF nd rsovD vF nd hykeD eFF nd edmsD FF nd ellrdD F nd erendsD rFiF nd etkinsonD xF nd ettigD tF nd frnettD FtF nd frnettD FvF nd fttersonD wF nd fernthezD F nd forns trD rFF nd frekenridgeD eF nd frinerD tFF nd frourdD iF nd gmpellD tFiF nd grlsonD eFiF nd glgueD tFtF nd gurryD fFfF nd higneultD FeF nd hu¡ eEvouertD rF nd isterrookD hFtF nd prnziD hFeF nd priedrihD rFqF nd punderD F nd quthierD wFF nd qownD eFF nd rrrisD uFvF nd r¡ etuD fF nd rooyerD FF nd tenningsD gFiF nd tohnsonD wFhF nd uehewD eFiF nd uelleyD FiF nd uerrD hF nd uingD iFvF nd ujeldsenD uFuF nd uneleD eFF nd vjeunesseD F nd vkemnD FF nd vmotheD wF nd vrsonD F nd vvoieD wF nd voopeD rFwF nd vowellD FF nd vusrdiD fFeF nd wnzD vF nd wwrtinD sF nd xixonD pFgF nd yhiettiD F nd rkhillD wFeF nd iperD hFtFF nd ronkD eFqF nd ihrdD FtFrF nd idgeD tFgF nd ossD wF nd oyD wF nd emnD eF nd hwD tF nd teD FF nd ellerD tFF nd hompsonD FfF nd horleifsonD rFvF nd ttingD hFtF nd eilletteD tFtF nd rdD fFgF nd eddleD FuF nd right trD rFiF @PHPHA 9en updted rdioronEsed ie mrgin hronology for the lst deglition of the xorth emerin se heet gomplexF9D uternry siene reviewsFD PQR F pF IHTPPQF

No abstract

No abstract

Deglaciation of north‐central Quebec and Labrador led to the development of large ice‐dammed lakes in river valleys surrounding Ungava Bay. These lakes are poorly understood due to uncertainties in the regional pattern of ice retreat. Lake Naskaupi occupied the George River valley where systematic mapping of glacial landforms and extensive elevation measurements of shorelines reveal a complex history characterized by multiple lake levels. Our reconstruction documents three well‐defined lake levels marking extensive lake stages. Additional lake levels are poorly developed and relate to short‐lived, transient lake stages. During its main stage (N2′), Lake Naskaupi consisted of two separate basins that evolved independently for some time. This configuration resulted from the persistence of cold‐based ice conditions during the deglaciation that caused the retreating ice margin to remain in the middle section of the river valley. The presence of this ice dam is supported by large‐scale outburst flood deposits that record the abrupt drainage of the southern Naskaupi basin. The magnitude of the elevation changes between the remaining lower lake levels suggests the occurrence of at least one other major drawdown before the final lake drainage. Reconstruction of the N2′ lake stage provides a minimum meltwater volume estimate for the lake.