Abstract
Thermoluminescence (TL) analysis of glacial-marine and postglacial sediments in core 85027-029 from Cumberland Sound, Baffin Island shows that the TL signal can be used to differentiate glacial-marine sediments deposited extremely close (< 0.5 km) to an ice margin from other glacial-marine facies. Sediments deposited in very close proximity to an ice margin are not exposed to light during deposition and retain a high TL level inherited from bedrock. Overlying ice-proximal, ice-distal and postglacial sediments are exposed to sufficient light during transport to undergo a substantial reduction in TL level prior to deposition, these sediment types may be amenable for TL dating but only on time scales of 10 4 to 10 5 yrs.
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