Geochemical and physical, sedimentological and magnetic properties of sediments collected throughout the Canadian Arctic Archipelago during the CCGS Amundsen cruise AMD16 ...

• Main Authors: Letaief, Sarah, St-Onge, Guillaume, Montero-Serrano, Jean-Carlos
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2020
• Subjects: Canadian Arctic Archipelago; Geochemistry; FOS Earth and related environmental sciences; Little Ice Age; magnetic properties; sedimentary dynamics; Sedimentology; Arctic Archipelago; Banks Island; Lancaster Sound; M'Clure Strait; Mackenzie Shelf
• Online Access: https://dx.doi.org/10.1594/pangaea.910671; https://doi.pangaea.de/10.1594/PANGAEA.910671

Sedimentological, geochemical, physical and magnetic properties of 40 surface and basal sediment samples of box cores collected throughout the Canadian Arctic Archipelago from the Canadian Beaufort shelf to Lancaster Sound were analyzed in order to determine the modern and the Little Ice Age (LIA) sedimentary processes. The chronology of seven selected regional cores was established using 210Pb measurements, where the base is dated on average at ~1600 AD. The different properties combined with multivariate statistical analyses have resulted in the identification of three provinces with distinct sedimentary characteristics during both periods: (1) The West province (Mackenzie Shelf/Slope, the West Banks Island and the M'Clure Strait) typified by detrital associations (Fe-Rb-Ti-Zn), important organic matter inputs, dominance of magnetite and low coercivity minerals and higher alluminosilicate contents; (2) The Intermediate Zone (Amundsen and Coronation Gulfs) distinguished by Si-Al-Zr-Sr-K-Y associations, ...