Age model of sediment core MSM45/19_2 ...

• Main Authors: Lochte, Annalena Antonia, Schneider, Ralph R
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: 8.2 ka event; Age model; Holocene; Labrador Sea; radiocarbon age model; DEPTH, sediment/rock; Calendar age; Gravity corer; Age, 14C calibrated; MSM45; Maria S. Merian; Canada; Labrador Shelf; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.945717; https://doi.pangaea.de/10.1594/PANGAEA.945717

The presented data originates from the 1306cm long gravity core MSM45-19-2 (58°45.68 N, 61°56.25 W, 202m water depth) taken during R/V Maria S. Merian cruise MSM45 in August 2015 at 202 m water depth on the northern Labrador Shelf, northeast Canada, northwest Atlantic.Radiocarbon dating was done to secure the chorology of core MSM45-19-2 for further palaeoceanographic interpretations. The chronology of core MSM45-19-2 is based on linear interpolation of the calibrated (median probability)14C AMS ages. The sedimentation rate varies between 0.037 and 1.22 cm per year and decreases toward the top of the core, which may be related to stronger current activity during the late Holocene leading to winnowing of fine particles (e.g. Rashid et al., 2017) or a shift of the sediment deposition center toward the outer shelf after sea-level high stand was reached. In addition, decreased glacial meltwater runoff after 7 ka BP corresponding to the end of significant Laurentide Ice Sheet melting (Carlson et al., 2008) would ...