Kossack, Michael; Titschack, Jürgen; Anderson, Chloe H; Scholz, Florian; Zabel, Matthias: 14C age determination of sediment core GeoB23817-12 form METEOR cruise M157, Namibian shelf [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.994154 (dataset in review), In: Kossack, M et al.: Solid phase geochmical data, 14C ages and sedimentary data from multicores and gravity cores form METEOR cruise M157, Namibian shelf [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995137 (dataset in review)
Abstract:
In this dataset 14C ages form RV Meteor cruise M157 from the Namibian shelf, gravity core site GeoB23817-12, are presented. Both, depth in core (cm) and the corrected depth below seafloor (cm) are presented for the samples. Gravity core depth was adjusted to extend the paired multicore from the site. The offset was determined visually, based on eight pore water constituent profiles.
14C analysis on TOC was carried out in the Carbon Dating Laboratory at Alfred-Wegener-Institute (MICADAS – AWI) in Bremerhaven, Germany, by using accelerator mass spectrometry (AMS). The conventional AMS 14C ages were calibrated using the program: Calib Rev 8.1.0 (Stuiver & Reimer, 1993) with the calibration curve: marine20 (Heaton et al., 2020) and a marine carbon reservoir correction (ΔR) of 146 ± 85 14C years (Dewar et al., 2012).
Keyword(s):
Related to:
Kossack, Michael; Anderson, Chloe H; Römer-Stange, Nikolas; Titschack, Jürgen; Scholz, Florian; Zabel, Matthias (submitted): Depositional history of the Namibian mud belt reveals late Holocene weakening of the Benguela Coastal Current. Geochemistry, Geophysics, Geosystems
References:
Dewar, Genevieve; Reimer, Paula J; Sealy, Judith; Woodborne, Stephan M (2012): Late-Holocene marine radiocarbon reservoir correction (ΔR) for the west coast of South Africa. The Holocene, 22(12), 1481-1489, https://doi.org/10.1177/0959683612449755
Heaton, Timothy J; Köhler, Peter; Butzin, Martin; Bard, Edouard; Reimer, Ron W; Austin, William EN; Ramsey, Christopher Bronk; Grootes, Pieter Meiert; Hughen, Konrad A; Kromer, Bernd; Reimer, Paula J; Adkins, Jess F; Burke, Andreas; Cook, Mea S; Olsen, Jesper; Skinner, Luke C (2020): Marine20 - the marine radiocarbon age calibration curve (0-55,000 cal BP). Radiocarbon, 62(4), 779-820, https://doi.org/10.1017/RDC.2020.68
Project(s):
Coverage:
Latitude: -22.999900 * Longitude: 14.316433
Date/Time Start: 2019-08-28T09:34:00 * Date/Time End: 2019-08-28T09:34:00
Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 5.82 m
Event(s):
M157_17-12 (GeoB23817-12) * Latitude: -22.999900 * Longitude: 14.316433 * Date/Time: 2019-08-28T09:34:00 * Elevation: -78.0 m * Campaign: M157 (BUSUC 1) * Basis: Meteor (1986) * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Kossack, Michael | Geocode | |
| 2 | Depth, corrected | Depth corr | m | Kossack, Michael | ||
| 3 | Fraction modern carbon | F14C | Kossack, Michael | |||
| 4 | Fraction modern carbon, uncertainty | F14C unc | ± | Kossack, Michael | ||
| 5 | Age, dated | Age dated | ka BP | Kossack, Michael | Age, 14C conventional | |
| 6 | Age, uncertainty | Age unc | ± | Kossack, Michael | ||
| 7 | Calendar age, minimum/young | Cal age min | ka BP | Kossack, Michael | Age, 14C calibrated, CALIB 8.10 and Marine20 calibration curve | one sigma dev. |
| 8 | Calendar age, maximum/old | Cal age max | ka BP | Kossack, Michael | one sigma dev. | |
| 9 | Calendar age, median | Cal age median | ka BP | Kossack, Michael | Age, AMS 14C milieu/reservoir corrected | cal. AMS 14C age, incl. dR |
| 10 | Comment | Comment | Kossack, Michael |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
63 data points