Age-depth relationship, XRF/physical properties, and XRD anlaysis of sediment cores MSM09/2_467-3 (GeoTü SL 174) and MSM09/2_455-13 (GeoTü SL 170) ...

• Main Authors: Jackson, Rebecca, Carlson, Anders Eskil, Hillaire-Marcel, Claude, Wacker, Lukas, Vogt, Christoph, Kucera, Michal
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2017
• Subjects: Center for Marine Environmental Sciences MARUM; Baffin Bay; Baffin; Greenland; Ice Sheet; Labrador Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.882505; https://doi.pangaea.de/10.1594/PANGAEA.882505

The chronology of deglacial meltwater pulses from the Laurentide Ice Sheet is well documented. However, the deglacial history of the North American-Arctic (north-eastern Laurentide and Innuitian) and western Greenland ice sheets draining into the Labrador Sea via Baffin Bay is less well constrained. Here we present new high-resolution, radiocarbon-dated records from the central Baffin Bay spanning ~17 to 10 kyr BP and documenting the full deglacial history of Baffin Bay. Sedimentological and geochemical data confirm the presence of two periods of enhanced detrital carbonate delivery, termed Baffin Bay Detrital Carbonate Events (BBDCs). These events are dated to ~14.2-13.7 kyr BP and ~12.7-11 kyr BP. They are synchronous across Baffin Bay and their mineralogical signature indicates a common source of detrital carbonate from northern Baffin Bay. The first event, BBDC 1, postdates Heinrich Event 1 and the second event, BBDC 0, predates the recently revised timing of Heinrich Event 0. The onset of the BBDC ... : Supplement to: Jackson, Rebecca; Carlson, Anders Eskil; Hillaire-Marcel, Claude; Wacker, Lukas; Vogt, Christoph; Kucera, Michal (2017): Asynchronous instability of the North American-Arctic and Greenland ice sheets during the last deglaciation. Quaternary Science Reviews, 164, 140-153 ...