FN Archimer Export Format PT J TI Assessing the stratigraphic integrity of planktic and benthic 14 c records in the western pacific for δ 14 c reconstructions at the last glacial termination BT AF Stott, Lowell D AS 1:1; FF 1:; C1 Department of Earth Science, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089, USA C2 UNIV SO CALIF, USA IF 1.504 TC 3 UR https://archimer.ifremer.fr/doc/00643/75468/76291.pdf LA English DT Article DE ;isotope analysis;mysterious radiocarbon anomalies AB There is a growing database of radiocarbon (14C) reconstructions from biogenic carbonate taken from marine sediment cores being used to investigate changing ocean circulation and carbon cycling at the end of the last great ice age. Reported here are 14C results from a marine core taken in the Makassar Straits of the western equatorial Pacific that was intended to test whether there was evidence of geologic carbon release to the ocean during the glacial termination. A thorough investigation of planktic and benthic 14C ages with stable isotopes and CT-scans revealed extensive burrowing in the upper 2 m of the core that displaced younger sediments downward by more than half a meter into the glacial section of the core. The vertical displacement is evident in both planktic and benthic fossils. However, the extent of displacement and the stratigraphic disturbance became evident only after multiple measurements of different species and genera. A CT-scan prior to sampling would be an effective screening tool to avoid sampling problem cores such as this. PY 2020 PD OCT SO Radiocarbon SN 0033-8222 PU Cambridge University Press (CUP) VL 62 IS 5 UT 000593989100018 BP 1389 EP 1402 DI 10.1017/RDC.2020.82 ID 75468 ER EF