Age models of sixteen Black Sea cores between 68.9 and 14.5 ka ...

• Main Authors: Liu, Jiabo, Nowaczyk, Norbert R, Arz, Helge Wolfgang
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2020
• Subjects: Black Sea; Laschamps; Mono Lake; Norwegian-Greenland Sea; Paleosecular variation; Baltic Sea Research Institute, Warnemünde IOW; GeoForschungszentrum Potsdam GFZ; Greenland; Greenland ice cores; Greenland Sea; NGRIP
• Online Access: https://dx.doi.org/10.1594/pangaea.919427; https://doi.pangaea.de/10.1594/PANGAEA.919427

Age models of M72/5 cores were constrained by 16 accelerator mass spectrometry (AMS) 14C dating in core M72/5-24GC3 (Nowaczyk et al., 2012), and by identifications of the Campanian Ignimbrite tephra at 39.3 ± 0.11 ka ('Y5', e.g., De Vivo et al., 2001) and the Cape Riva tephra at 21.8 ± 0.4 ka ('Y2' e.g., Fabbro et al., 2013) in Black Sea sediments reported by Cullen et al. (2014) and Nowaczyk et al. (2012). The cores' age models were further refined by tuning sedimentologic parameters, e.g., ice rafted debris (IRD) counts and X-ray fluorescence (XRF) logs (mainly Ca/Ti and K/Ti ratios) presented by Nowaczyk et al. (2012), to the oxygen isotope (δ18O) record from Greenland ice cores (NGRIP) based on the GICC05 age model ( Svensson et al., 2008). For MSM33 cores, age models were also achieved by correlating their XRF elementary ratios (mainly Ca/Ti and K/Ti), as proxies for the 'Dansgaard-Oeschger' (D-O) warming events (Dansgaard et al., 1993), to the NGRIP δ18O record.Four intervals of K/Ti ratio peaks and ...