Varying sediment sources (Hudson Strait, Cumberland Sound, Baffin Bay) to the NW Labrador Sea slope between and during Heinrich events 0 to 4

• Published in: Journal of Quaternary Science
• Main Authors: Andrews, J. T., Barber, D. C., Jennings, A. E., Eberl, D. D., Maclean, B., Kirby, M. E., Stoner, J. S.
• Format: Text
• Language: English
• Published: Wiley-blackwell
• Subjects: geo; archeo; Baffin Bay; Baffin Island; Buff; Cumberland Sound; Hudson; Hudson Strait; Baffin; Labrador Sea
• Online Access: https://doi.org/10.1002/jqs.2535; https://archimer.ifremer.fr/doc/00265/37644/35823.pdf; https://archimer.ifremer.fr/doc/00265/37644/

Core HU97048-007PC was recovered from the continental Labrador Sea slope at a water depth of 945?m, 250?km seaward from the mouth of Cumberland Sound, and 400?km north of Hudson Strait. Cumberland Sound is a structural trough partly floored by Cretaceous mudstones and Paleozoic carbonates. The record extends from similar to 10 to 58?ka. On-board logging revealed a complex series of lithofacies, including buff-colored detrital carbonate-rich sediments [Heinrich (H)-events] frequently bracketed by black facies. We investigate the provenance of these facies using quantitative X-ray diffraction on drill-core samples from Paleozoic and Cretaceous bedrock from the SE Baffin Island Shelf, and on the?