Late Glacial and Holocene data from sediment cores MD99-2236 and MD99-2256 ...

• Main Authors: Jennings, Anne E, Andrews, John A, Pearce, Christof, Wilson, Lindsay, Olafsdottir, Sædis
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2015
• Subjects: Hudson Bay; Hudson Strait; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.864065; https://doi.pangaea.de/10.1594/PANGAEA.864065

The Laurentide Ice Sheet (LIS) was a large, dynamic ice sheet in the early Holocene. The glacial events through Hudson Strait leading to its eventual demise are recorded in the well-dated Labrador shelf core, MD99-2236 from the Cartwright Saddle. We develop a detailed history of the timing of ice-sheet discharge events from the Hudson Strait outlet of the LIS during the Holocene using high-resolution detrital carbonate, ice rafted detritus (IRD), d18O, and sediment color data. Eight detrital carbonate peaks (DCPs) associated with IRD peaks and light oxygen isotope events punctuate the MD99-2236 record between 11.5 and 8.0 ka. We use the stratigraphy of the DCPs developed from MD99-2236 to select the appropriate DeltaR to calibrate the ages of recorded glacial events in Hudson Bay and Hudson Strait such that they match the DCPs in MD99-2236. We associate the eight DCPs with H0, Gold Cove advance, Noble Inlet advance, initial retreat of the Hudson Strait ice stream (HSIS) from Hudson Strait, opening of the ... : Supplement to: Jennings, Anne E; Andrews, John A; Pearce, Christof; Wilson, Lindsay; Olafsdottir, Sædis (2015): Detrital carbonate peaks on the Labrador shelf, a 13–7ka template for freshwater forcing from the Hudson Strait outlet of the Laurentide Ice Sheet into the subpolar gyre. Quaternary Science Reviews, 107, 62-80 ...