Tie points for IODP Hole 344-U1381C

The age model for the upper 49 m of Hole U1381C is based on radiocarbon dates, graphical tuning of the benthic δ18O record and biostratigraphic and paleomagnetic events. The age control of the upper sections (4.3 mbsf) is constrained by seven accelerator mass spectrometry 14C ages on planktonic foraminifera from the >150 μm size fraction. The accelerator mass spectrometry ages were measured at the Center for Applied Isotope Studies, University of Georgia (U.S.A.) and were calibrated (2σconfidence limits) with the Calib 7.0 software using the Marine13 calibration dataset (Reimer et al., 2013). The oldest radiocarbon age was too old for calibration and was discarded for the age model construction. The last occurrence of the planktonic foraminifera Globigerinoides ruber (pink variety) occurring at 8.95 mbsf which corresponds to an age of ∼127 ka (Ivanova et al., 2012), was also used as a dating point. Beyond the radiocarbon limits, the U1381C benthic δ18O of Uvigerina auberiana from the 250-300 µm size fraction was correlated graphically to the orbitally tuned LR04 benthic δ18O stack record (Lisiecki and Raymo, 2005) as indicated in Diz et al., (2018). The Brunhes-Matuyama boundary found at 49 mbsf (Li et al., 2015) is considered as additional tie point.

Data and Resources

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Cite this as

Diz, Paula, Hernández-Almeida, Iván, Bernárdez, Patricia, Pérez-Arlucea, Marta, Hall, Ian R (2024). Dataset: Tie points for IODP Hole 344-U1381C. https://doi.org/10.1594/PANGAEA.971417

DOI retrieved: 2024

Additional Info

Field Value
Imported on November 29, 2024
Last update November 29, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.971417
Author Diz, Paula
Given Name Paula
Family Name Diz
More Authors
Hernández-Almeida, Iván
Bernárdez, Patricia
Pérez-Arlucea, Marta
Hall, Ian R
Source Creation 2024
Publication Year 2024
Resource Type text/tab-separated-values - filename: 344-U1381C_tie_point
Subject Areas
Name: Geophysics

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