Wharton, Jack; Renoult, Martin; Gebbie, Geoffrey; Keigwin, Lloyd D; Marchitto, Thomas M; Maslin, Mark; Oppo, Delia W; Thornalley, David J R: Age determination of Northwest Atlantic sediment cores [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967476 (dataset in review), In: Wharton, J et al.: Benthic foraminiferal oxygen isotope data (δ18O) and age models from Northwest Atlantic sediment cores forming depth transects at Blake Outer Ridge and Cape Hatteras [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967462 (dataset in review)
Abstract:
This dataset contains new and updated age models for sediment cores from depth transects at Blake Outer Ridge and Cape Hatteras. Primarily, this includes new AMS-14C ages measured on planktic and/or benthic foraminifera, as well as δ18O (and other) tie points. We also include previously published 14C that has been recalibrated using new reservoir ages and updated calibration curves (Marine 20; ∆R=-128±68; Heaton et al., 2020). AMS-14C measurements were made at the NERC NEIF Radiocarbon Laboratory (University of East Kilbride, Scotland, UK), KCCAMS Radiocarbon Facility (University of California, Irvine, CA, USA), and NOSAMS Facility (Woods Hole Oceanographic Institution, MA, USA), following standard procedures.
Keyword(s):
Related to:
Hendry, Katharine R; Brzezinski, Mark A (2014): Using silicon isotopes to understand the role of the Southern Ocean in modern and ancient biogeochemistry and climate. Quaternary Science Reviews, 89, 13-26, https://doi.org/10.1016/j.quascirev.2014.01.019
Keigwin, Lloyd D (2004): Radiocarbon and stable isotope constraints on Last Glacial Maximum and Younger Dryas ventilation in the western North Atlantic. Paleoceanography, 19(4), PA4012, https://doi.org/10.1029/2004PA001029
Thornalley, David J R; Oppo, Delia W; Ortega, Pablo; Robson, Jon I; Brierley, Chris M; Davis, Renee; Hall, Ian R; Moffa-Sanchez, Paola; Rose, Neil L; Spooner, Peter T; Yashayaev, Igor M; Keigwin, Lloyd D (2018): Anomalously weak Labrador Sea convection and Atlantic overturning during the past 150 years. Nature, 556(7700), 227-230, https://doi.org/10.1038/s41586-018-0007-4
Yasuhara, Moriaki; Cronin, Thomas M; deMenocal, Peter B; Okahashi, Hisayo; Linsley, Braddock K (2008): Abrupt climate change and collapse of deep-sea ecosystems. Proceedings of the National Academy of Sciences of the United States of America, 105(5), 1556-1560, https://doi.org/10.1073/pnas.0705486105
References:
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):
Funding:
Horizon 2020 (H2020), grant/award no. 678760: A Trans-Atlantic assessment and deep-water ecosystem-based spatial management plan for Europe
Horizon 2020 (H2020), grant/award no. 818123: Integrated Assessment of Atlantic Marine Ecosystems in Space and Time
National Science Foundation (NSF), grant/award no. OCE-1304291: Holocene reconstructions of Iceland-Scotland Overflow and the Deep Western Boundary Current
Natural Environment Research Council (NERC), grant/award no. NE/L002485/1: The London NERC Doctoral Training Partnership
Coverage:
Median Latitude: 35.597311 * Median Longitude: -74.232788 * South-bound Latitude: 31.674194 * West-bound Longitude: -76.295000 * North-bound Latitude: 39.280000 * East-bound Longitude: -72.120000
Date/Time Start: 1997-02-21T00:00:00 * Date/Time End: 2019-09-02T00:00:00
Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 23.64 m
Event(s):
172-1055 * Latitude: 32.784333 * Longitude: -76.286278 * Date/Time: 1997-02-21T00:00:00 * Elevation: -1798.1 m * Penetration: 405.4 m * Recovery: 429.4 m * Location: Carolina Slope, North Atlantic Ocean * Campaign: Leg172 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 45 cores; 405.4 m cored; 0 m drilled; 105.9% recovery
172-1057 * Latitude: 32.028861 * Longitude: -76.079222 * Date/Time: 1997-02-25T00:00:00 * Elevation: -2583.8 m * Penetration: 341.2 m * Recovery: 364.2 m * Location: Carolina Slope, North Atlantic Ocean * Campaign: Leg172 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 37 cores; 341.2 m cored; 0 m drilled; 106.7% recovery
172-1059 * Latitude: 31.674194 * Longitude: -75.418528 * Date/Time: 1997-03-03T00:00:00 * Elevation: -2985.1 m * Penetration: 286 m * Recovery: 301.9 m * Location: Blake Outer Ridge, North Atlantic Ocean * Campaign: Leg172 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 31 cores; 286 m cored; 0 m drilled; 105.6% recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Wharton, Jack | |||
| 2 | Latitude of event | Latitude | Wharton, Jack | |||
| 3 | Longitude of event | Longitude | Wharton, Jack | |||
| 4 | Elevation of event | Elevation | m | Wharton, Jack | ||
| 5 | Transect | Transect | Wharton, Jack | |||
| 6 | Sample ID | Sample ID | Wharton, Jack | OS = National Ocean Sciences AMS Facility, WHOI; UCI AMS = University California Irvine W.M. Keck Carbon Cycle AMS (KCCAMS) Facility; SUERC = Scottish Universities Environmental Research Centres NEIF Radiocarbon Laboratory | ||
| 7 | DEPTH, sediment/rock | Depth sed | m | Wharton, Jack | Geocode | |
| 8 | Offset | Offset | m | Wharton, Jack | To account for sediment voids | |
| 9 | Age, dating method | Dating meth | Wharton, Jack | |||
| 10 | Age, dated material | Dated material | Wharton, Jack | |||
| 11 | Fraction modern carbon | F14C | Wharton, Jack | |||
| 12 | Fraction modern carbon, error | F14C e | ± | Wharton, Jack | calculated, 1 sigma | |
| 13 | Age, dated | Age dated | ka | Wharton, Jack | Age, 14C AMS | |
| 14 | Age, dated, uncertainty | Age dated unc | ± | Wharton, Jack | calculated, 1 sigma | |
| 15 | AGE | Age | ka BP | Wharton, Jack | Geocode | |
| 16 | Comment | Comment | Wharton, Jack |
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:
655 data points