Jacobel, Allison W; Costa, Kassandra M; Lynch-Stieglitz, Jean; Marchitto, Thomas M: Foraminifera density analyses of sediment core ML1208-16BB from central equatorial Pacific [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.986847 (dataset in review)
Abstract:
Constraints on deep ocean carbonate chemistry are critical for understanding the processes responsible for glacial-interglacial changes in atmospheric pCO2 and the ocean feedbacks that amplify carbon cycle change. Here, we present the results of foraminifera density analyses (mass per feret diameter) as measured on the planktonic foraminifera G. ruber. These data are inconsistent with a co-registered B/Ca-based record of carbonate ion concentration (∆[CO32-]) suggesting a decoupling of bottom water and porewater carbonate chemistry.
Supplement to:
Jacobel, Allison W; Costa, Kassandra M; Lynch-Stieglitz, Jean; Marchitto, Thomas M (in review): Deep Pacific Carbonate Chemistry Over the Last Glacial Cycle. In review with Quaternary Science Reviews. Quaternary Science Reviews
References:
Ahn, Seonmin; Khider, D; Lisiecki, Lorraine E; Lawrence, Charles E (2017): A probabilistic Pliocene–Pleistocene stack of benthic δ18O using a profile hidden Markov model. Dynamics and Statistics of the Climate System, 2(1), https://doi.org/10.1093/climsys/dzx002
Jacobel, Allison W; Costa, Kassandra M; Applebaum, Lily M; Conde, Serena (2025): New controls on sedimentation and climate in the central equatorial Pacific Ocean. Geochronology (GChron), 7(1), 123-138, https://doi.org/10.5194/gchron-7-123-2025
Lee, T; Rand, Devin S; Lisiecki, Lorraine E; Gebbie, Geoffrey; Lawrence, Charles E (2023): Bayesian age models and stacks: combining age inferences from radiocarbon and benthic δ 18 O stratigraphic alignment. Climate of the Past, 19(10), 1993-2012, https://doi.org/10.5194/cp-19-1993-2023
Funding:
Coverage:
Latitude: 0.480000 * Longitude: -156.270000
Minimum DEPTH, sediment/rock: 0.0325 m * Maximum DEPTH, sediment/rock: 0.5050 m
Event(s):
ML1208-16BB * Latitude: 0.480000 * Longitude: -156.270000 * Elevation: -2926.0 m * Location: Central equatorial Pacific * Campaign: MGL2408 * Basis: Marcus G. Langseth * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Depth, sediment/rock, top/minimum | Depth sed top | m | Jacobel, Allison W | ||
| 2 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Jacobel, Allison W | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Jacobel, Allison W | Geocode | |
| 4 | Age model | Age model | ka | Jacobel, Allison W | see comment | Average. Statistically constrained with 14C and 18O via tuning to the Ahn et al. (2017, doi:10.1093/climsys/dzx002) stack using BIGMACS (Lee at al. (2023, doi:10.1093/climsys/dzx002)); age model published by Jacobel et al. (2025, doi:10.5194/gchron-7-123-2025). |
| 5 | Mass | Mass | µg | Jacobel, Allison W | Average | |
| 6 | Mass, uncertainty | mass unc | ± | Jacobel, Allison W | Average | |
| 7 | Globigerinoides ruber, Feret diameter | G. ruber Feret dia | mm | Jacobel, Allison W | Ultramicrobalance, Mettler Toledo, XP2U | Average |
| 8 | Globigerinoides ruber, Feret, diameter uncertainty | G. ruber Feret dia unc | ± | Jacobel, Allison W | Ultramicrobalance, Mettler Toledo, XP2U | Average |
| 9 | Globigerinoides ruber, mass per Feret diameter | G. ruber m/Feret dia | µg/mm | Jacobel, Allison W | Ultramicrobalance, Mettler Toledo, XP2U | Average |
| 10 | Globigerinoides ruber, mass per Feret diameter, uncertainty | G. ruber m/Feret dia unc | ± | Jacobel, Allison W | Ultramicrobalance, Mettler Toledo, XP2U | Average |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
63 data points