A conceptual model of the deglaciation of Atlantic Canada

On the reconstruction of palaeo-ice sheets: Recent advances and future challenges

“…In the last decade alone, there are cases where margins have been revised and extended to the edge of the continental shelf for the Laurentide and Innuitian Ice Sheets, the Eurasian Ice Sheet (including the Fennoscandian, Barents Sea and British-Irish Ice Sheets), and the Greenland Ice Sheet (e.g. Ottesen et al, 2005;Shaw et al, 2006;Bradwell et al, 2008;England et al, 2009;Ó Cofaigh et al, 2013). In particular, advances in high-latitude seafloor mapping in the 1990s, especially high resolution multibeam mapping, have helped elucidate the glacial history of the Arctic Ocean (reviewed in Jakobsson et al, 2014).…”

The subglacial imprint of the last Newfoundland Ice Sheet, Canada.

“…The LIS formed the central parts of the North American Ice Sheet Complex and during its maximum extent ( 27 14 C ka BP and 24 14 C ka BP; Dyke et al, 2002) coalesced with the smaller regional ice sheets including the NIS with the convergence zone being along Newfoundland's northern and western margins (Figure 1; Dyke, 2004;Grant, 1989Grant, , 1994Kleman et al, 2010;Stokes, Tarasov, & Dyke, 2012). A southward ice flow from Labrador crossed the Strait of Belle Isle onto northern parts of the Great Northern Peninsula, while further to the south, the LIS advanced as far as the Long Range Mountains before being deflected into the Gulf of St. Lawrence (Brookes, 1982;Catto, 1998;Grant, 1977Grant, , 1989Putt, Bell, Batterson, & Smith, 2010;Shaw et al, 2006;Tucker, 1974). At this time, the NIS is understood to have maintained a complex of local ice caps with ice cover having advanced to the continental shelf (Dyke et al, 2002;Shaw, 2003Shaw, , 2006Shaw et al, 2006).…”

“…A southward ice flow from Labrador crossed the Strait of Belle Isle onto northern parts of the Great Northern Peninsula, while further to the south, the LIS advanced as far as the Long Range Mountains before being deflected into the Gulf of St. Lawrence (Brookes, 1982;Catto, 1998;Grant, 1977Grant, , 1989Putt, Bell, Batterson, & Smith, 2010;Shaw et al, 2006;Tucker, 1974). At this time, the NIS is understood to have maintained a complex of local ice caps with ice cover having advanced to the continental shelf (Dyke et al, 2002;Shaw, 2003Shaw, , 2006Shaw et al, 2006). At maximum ice extent, a number of large ice streams were well established in the marine sectors of the LIS and Atlantic Canada (Kleman & Glasser, 2007;Shaw et al, 2006;Stokes et al, 2012).…”

“…At this time, the NIS is understood to have maintained a complex of local ice caps with ice cover having advanced to the continental shelf (Dyke et al, 2002;Shaw, 2003Shaw, , 2006Shaw et al, 2006). At maximum ice extent, a number of large ice streams were well established in the marine sectors of the LIS and Atlantic Canada (Kleman & Glasser, 2007;Shaw et al, 2006;Stokes et al, 2012). Marine-based ice streams such as the Laurentian Channel Ice Stream, which was partially fed by terrestrial ice streams from the NIS is thought to have heavily influenced the configuration, dynamics and decay of the both the LIS and NIS in this region (Dyke & Prest, 1987;Shaw et al, 2006;Stokes & Clark, 2001;Stokes et al, 2012).…”

Applying the Cosmogenic Nuclide Dipstick Model for Deglaciation of Mt. Washington

“…Such thinning might suggest that Oldest Dryas cooling was mostly during winter and related to sea-ice expansion (Denton et al, 2005), or that Heinrich 1 dynamical discharge caused significant ice-sheet drawdown over the southeastern LIS (Shaw et al, 2006).…”