Skinner, Luke C (2020): Deep-water temperatures from the Southern Ocean during HS4 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.922135
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Abstract:
Foraminiferal magnesium to calcium ratios (Mg/Ca) are reported for two benthic species, drawn from down-core marine sediment samples obtained from the deep Southern Ocean. Samples of 4-10 individual benthic foraminifera, of the species Globobulimina affinis and/or Uvigerina sp., were oxidatively cleaned according to a standard protocol, involving clay/detrital material removal, methanol rinses, buffered oxidation of organic matter, weak acid leaching, and deionised water rinses, followed by visual inspection of the remaining calcite fragments. After dissolution, samples were analysed by inductively coupled plasma mass spectrometry (ICP-MS). The analytical internal reproducibility is better than 2%. The efficiency of cleaning to remove external contaminant phases was screened on the basis of Fe/Ca ratios, which here remain below 0.05 mmol/mol.
Supplement to:
Skinner, Luke C; Menviel, Laurie; Broadfield, Lauren; Gottschalk, Julia; Greaves, Mervyn (2020): Southern Ocean convection amplified past Antarctic warming and atmospheric CO2 rise during Heinrich Stadial 4. Communications Earth & Environment, 1(1), https://doi.org/10.1038/s43247-020-00024-3
Related to:
Skinner, Luke C (2020): Spline interpolated deep-water temperatures from the Southern Ocean during HS4 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.922136
Coverage:
Latitude: -44.153330 * Longitude: -14.228170
Minimum DEPTH, sediment/rock: 3.26 m * Maximum DEPTH, sediment/rock: 4.13 m
Event(s):
MD07-3076 (MD07-3076Q) * Latitude: -44.153330 * Longitude: -14.228170 * Elevation: -3770.0 m * Campaign: MD159 (IMAGES XV - Pachiderme) * Basis: Marion Dufresne (1995) * Method/Device: Calypso Square Core System (CASQS)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Skinner, Luke C | Geocode – top | |
| 2 | AGE | Age | ka BP | Skinner, Luke C | Geocode | |
| 3 | Melonis affinis, Magnesium/Calcium ratio | M. affinis Mg/Ca | mmol/mol | Skinner, Luke C | Inductively coupled plasma - mass spectrometry (ICP-MS) | ±2% |
| 4 | Uvigerina sp., Magnesium/Calcium ratio | Uvigerina sp. Mg/Ca | mmol/mol | Skinner, Luke C | Inductively coupled plasma - mass spectrometry (ICP-MS) | ±2% |
| 5 | Deep water temperature | DWT | °C | Skinner, Luke C | G. affinis Tdw | |
| 6 | Deep water temperature | DWT | °C | Skinner, Luke C | Uvigerina sp. Tdw | |
| 7 | Deep water temperature | DWT | °C | Skinner, Luke C | Average Tdw (±0.6) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
176 data points