Glacial landsystems of the southwest Laurentide Ice Sheet: modern Icelandic analogues

The sedimentary signature of ice-contact sedimentation and deformation at macro- and micro-scale: A case study from NW Scotland

“…It is more likely that these angular blocks stem from the bulldozing of pre-existing sediments during glacier advance (e.g. Evans et al, 1999;Ballantyne, 2002). The voids between the boulders were most likely infilled during bulldozing by sediment transported in meltwater streams emerging from the snout and individual debris flows off the ice front before being overridden by the advancing glacier leading to overconsolidation.…”

An assessment of surge-induced crevassing and the formation of crevasse squeeze ridges

“…Normally, crevasses open, close and become deformed as they move through the varying tectonic regimes [ Harper et al , 1998], making interpretation of the initial formation conditions problematic. However, due to the phase of quiescence between surges, crevasses may be preserved, initially as crevasse traces within the ice and subsequently as crevasse squeeze ridges (CSRs) [ Sharp , 1985] on the glacier foreland which may survive extended subaerial exposure [ Evans and Rea , 1999, 2003; Evans et al , 1999]. CSRs are potentially an archive of tectonic conditions experienced during surging, which could provide an opportunity to derive quantitative estimates of the dynamics of past surging glaciers.…”

Seismic imaging of mid-Pleistocene tunnel-valleys in the North Sea Basin—high resolution from low frequencies

“…Thus, there has been considerable success in relating landform assemblages of the last deglaciation to models of subglacial and glaciofluvial processes (e.g. Evans et al, 1999;Boulton et al, 2001). We know much less about processes during prior glacial advances and withdrawals, however, the morpho-sedimentary products of which either have been buried, or are overprinted and poorly preserved at surface.…”