(Table 1) Age determination of sediment core HLY0503-08JPC ...

• Main Authors: Adler, Ruth E, Polyak, Leonid, Ortiz, Joseph D, Kaufman, Darrell S, Channell, James E T, Xuan, Chuang, Grottoli, Andréa G, Sellén, Emma, Crawford, Kevin Richard
• Format: Dataset
• Language: English
• Published: PANGAEA 2009
• Subjects: Sample ID; DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Age, dated; Age, dated standard deviation; Calendar age; Calendar age, standard deviation; Jumbo Piston Core; Age, 14C AMS; Age, 14C calibrated; HLY0503; Healy; Arctic Ocean; Foraminifera*; Lomonosov Ridge
• Online Access: https://dx.doi.org/10.1594/pangaea.817629; https://doi.pangaea.de/10.1594/PANGAEA.817629

Sediment core HLY0503-8JPC raised by the HOTRAX'05 expedition from the Mendeleev Ridge was analyzed for multiple lithological, paleontological, and stable-isotopic proxies to reconstruct paleoceanographic conditions in the western Arctic Ocean during the Late Quaternary. The core, extensively sampled in the upper 5 m, reveals pronounced changes in sedimentary environments during the ca. 250 kyr interval encompassing Marine Isotopic Stages (MIS) 1 to 7. An estimated average resolution of 500 yr/sample, at least for the last glacial cycle including the last interglacial, provides more detail than seen in other sedimentary records from the western Arctic Ocean. The age control is provided by 14C and amino acid racemization measurements on planktonic foraminifers and correlations with the stratigraphy developed for the central Lomonosov Ridge and with glacial events at the Eurasian Arctic margin. Cyclic variations in lithology combined with foraminiferal abundance and stable-isotopic composition indicate ... : Measured on planktonic foraminiferal samples. Holocene ages are median probability ages based on calibration using CALIB v 5.0.2 (http://calib.qub.ac.uk/calib/); older ages were calibrated using the Fairbanks0107 program [Fairbanks et al., 2005, doi:10.1016/j.quascirev.2005.04.007]. No Delta R was applied. ...