Shuttleworth, Rachael; Bostock, Helen C; Chalk, Thomas B; Calvo, Eva; Jaccard, Samuel L; Pelejero, Carles; Martínez-García, Alfredo; Foster, Gavin L (2021): δ11B isotopes, CO2 release and pH analysis from ODP Site 177-1090 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.929097
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Abstract:
Over the last deglaciation there were two transient intervals of pronounced atmospheric CO2 rise; Heinrich Stadial 1 (17.5-15 kyr) and the Younger Dryas (12.9-11.5 kyr). Leading hypotheses accounting for the increased accumulation of CO2 in the atmosphere at these times invoke deep ocean carbon being released from the Southern Ocean and an associated decline in the global efficiency of the biological carbon pump. From core ODP1090 we present new G. bulloidies boron isotope and Mg/Ca derived sea surface pH and pCO2 concentrations. Trace element analysis was performed on a ThermoScientific Element 2 ICP-MS at the University of Southampton using the method described by Henehan et al. (2015). Isotopic analysis was performed on a ThermoScientific Neptune MC-ICPMS at the University of Southampton following the methods of Foster (2008; doi:10.1016/j.epsl.2008.04.015) and Foster et al. (2013; doi:10.1016/j.chemgeo.2013.08.027).
Related to:
Shuttleworth, Rachael; Bostock, Helen C; Chalk, Thomas B; Calvo, Eva; Jaccard, Samuel L; Pelejero, Carles; Martínez-García, Alfredo; Foster, Gavin L (2021): Early deglacial CO2 release from the Sub-Antarctic Atlantic and Pacific oceans. Earth and Planetary Science Letters, 554, 116649, https://doi.org/10.1016/j.epsl.2020.116649
Coverage:
Latitude: -42.913617 * Longitude: 8.899817
Date/Time Start: 1997-12-25T00:00:00 * Date/Time End: 1997-12-25T00:00:00
Minimum Elevation: -3701.6 m * Maximum Elevation: -3701.6 m
Event(s):
177-1090 * Latitude: -42.913617 * Longitude: 8.899817 * Date/Time: 1997-12-25T00:00:00 * Elevation: -3701.6 m * Penetration: 936.4 m * Recovery: 874.9 m * Location: South Atlantic Ocean * Campaign: Leg177 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 101 cores; 936.4 m cored; 0 m drilled; 93.4% recovery
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
414 data points