Depositional facies of late Pleistocene Heinrich events in the Labrador Sea

The Laurentide and Innuitian ice sheets during the Last Glacial Maximum

“…Heinrich events (Heinrich, 1988) are inferred from widespread and distinctive sediment layers that contain an iceberg rafted coarse component. However, in the Labrador Sea the layers are dominated by fine-grained detrital carbonate sediments (Chough, 1978;Kirby, 1996) that appear to record large meltwater or turbidite flows emanating from Hudson Strait (Hesse et al, 1997;Hesse and Khodabakhsh, 1998). Sudden iceberg and meltwater release could have accompanied either a surge or a breakup of the Hudson Strait Ice Stream (cf.…”

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

“…Pink circles refer to published palaeo-subglacial lake records: CB = Christie Bay, Great Slave Lake; ML: McGregor Lake; TL: Travers Lake; OK: Okanagon. Hesse and Khodabakhsh, 1998). Left panel shows the location map.…”

“…The original definition of Heinrich layers was based on IRD in the central North Atlantic (Ruddiman 1977;Heinrich, 1988) (Hesse and Khodabakhsh, 1998) and are similar to seasonal cycles recognised in the Bay of Biscay by Zaragosi et al (2006). Dispersed drop clasts and pellets within the turbidite layers suggest that ice calving occurred at the same time as meltwater supply.…”

Glacier-influenced sedimentation on high-latitude continental margins: introduction and overview

“…For example, the work of Hesse and others from the Labrador Sea has shown that, in addition to iceberg rafting, the depositional processes responsible for Heinrich layer formation in this region also include suspension sedimentation from meltwater plumes and turbidity-current activity (Wang & Hesse 1996;Hesse & Khodabakhsh 1998;Andrews et al 1998). Several workers (e.g.…”