(Table 1) Age determination of Arctic Ocean sediment cores ...

• Main Authors: Poore, Richard Z, Osterman, Lisa Ellen, Curry, William B, Phillips, R Lawrence
• Format: Dataset
• Language: English
• Published: PANGAEA 1999
• Subjects: Event label; DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Age, dated; Age, dated standard deviation; Box corer; Age, 14C milieu/reservoir corrected -440 yr; Arctic Ocean; Neogloboquadrina pachyderma
• Online Access: https://dx.doi.org/10.1594/pangaea.817626; https://doi.pangaea.de/10.1594/PANGAEA.817626

Accelerator mass spectrometer 14C dated stable isotope data from Neogloboquadrina pachyerma in cores raised from the Mendeleyev Ridge and slope provide evidence for significant influx of meltwater to the western Arctic Ocean during the early part of marine oxygen isotope stage 1 (OIS 1) and during several intervals within OIS 3. The strongest OIS 3 meltwater event occurred before ca. 45 ka (conventional radiocarbon age) and was probably related to the deglaciation at the beginning of OIS 3. Major meltwater input to the western Arctic Ocean during the last deglaciation coincides closely with the maximum rate of global sea-level rise as determined from the Barbados sea-level record, demonstrating a strong link between the global record and changes in the central Arctic Ocean. OIS 2, which includes the last glacial maximum, is very condensed or absent in the cores. Abundance and d13C values for N. pachyderma in the middle part of OIS 3 are similar to modern values, indicating high productivity and seasonal ... : Measured on Neogloboquadrina pachyderma, size fraction >125 µm. ...