Wara, Michael W; Delaney, Margaret Lois; Bullen, Thomas D; Ravelo, Ana Christina (2003): (Table 2) B/Ca, d11B, Mg/Ca and δ¹⁸O record for ODP Hole 130-806B samples [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.841348, Supplement to: Wara, MW et al. (2003): Possible roles of pH, temperature, and partial dissolution in determining boron concentration and isotopic composition in planktonic foraminifera. Paleoceanography, 18(4), 1100, https://doi.org/10.1029/2002PA000797
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Abstract:
We present the first continuous records from 0 to 5 Ma (in 0.333 m.y. integrated time steps) of paired boron/calcium (B/Ca) ratios and boron isotopes (d11B) in the planktonic foraminifera Globogerinoides sacculifer (without sacc) from a site in the western equatorial Pacific Ocean (Ocean Drilling Program Site 806). These measurements, the first made in conjunction with calcification temperature (magnesium/calcium ratios) and average shell mass measurements, indicate that pH is not the sole environmental variable controlling B in planktonic foraminiferal calcite. Our data are consistent with calcification temperature exerting a primary control on B concentration and isotopic composition in planktonic foraminifera. If so, calcification temperature must be taken into account if pH for past oceans and atmospheric pCO2 are to be estimated from B isotope measurements in foraminiferal calcite. Doing so will substantially increase the uncertainty of pH estimates. Although this work was designed as a temporal study, its results define new aspects of calibrating the d11B paleo-pH tracer.
Further details:
Berger, Wolfgang H; Bickert, Torsten; Schmidt, Heike; Wefer, Gerold (1993): Quaternary oxygen isotope record of pelagic foraminifers: Site 806, Ontong Java Plateau. In: Berger, WH; Kroenke, LW; Mayer, LA; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 130, 381-395, https://doi.org/10.2973/odp.proc.sr.130.023.1993
Mayer, Larry A; Jansen, Eystein; Backman, Jan; Takayama, Toshiaki (1993): Climatic Cyclicity at Site 806: The GRAPE Record. In: Berger, WH; Kroenke, LW; Mayer, LA; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 130, 623-639, https://doi.org/10.2973/odp.proc.sr.130.046.1993
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 0.318500 * Longitude: 159.361000
Date/Time Start: 1990-02-18T21:00:00 * Date/Time End: 1990-02-23T01:30:00
Minimum Elevation: -2519.9 m * Maximum Elevation: -2519.9 m
Event(s):
130-806B * Latitude: 0.318500 * Longitude: 159.361000 * Date/Time Start: 1990-02-18T21:00:00 * Date/Time End: 1990-02-23T01:30:00 * Elevation: -2519.9 m * Penetration: 743.1 m * Recovery: 666.36 m * Location: North Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 743.1 m cored; 0 m drilled; 89.7 % recovery
Comment:
Sediment depth is given in mbsf. Measured on G. sacculifer (w/o sacc) size fraction 355-425 µm. Age assignments were made using the timescales of Berger et al. (1993) and Mayer et al. (1993).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Wara, Michael W | DSDP/ODP/IODP sample designation | ||
| 2 | Sample code/label 2 | Sample label 2 | Wara, Michael W | DSDP/ODP/IODP sample designation | ||
| 3 | AGE | Age | ka BP | Geocode | ||
| 4 | Age, minimum/young | Age min | ka | Wara, Michael W | ||
| 5 | Age, maximum/old | Age max | ka | Wara, Michael W | ||
| 6 | Globigerinoides sacculifer, Boron/Calcium ratio | G. sacculifer B/Ca | µmol/mol | Wara, Michael W | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
| 7 | Globigerinoides sacculifer, δ11B | G. sacculifer δ11B | ‰ SRM | Wara, Michael W | Negative-thermal ionization mass spectrometry (N-TIMS) | |
| 8 | Globigerinoides sacculifer, Magnesium/Calcium ratio | G. sacculifer Mg/Ca | mmol/mol | Wara, Michael W | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
| 9 | Globigerinoides sacculifer, weight | G. sacculifer W | µg | Wara, Michael W | Weighted | |
| 10 | Globigerinoides sacculifer, δ18O | G. sacculifer δ18O | ‰ PDB | Wara, Michael W | Isotope ratio mass spectrometry |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
141 data points