δ11B isotopes, CO2 release and pH analysis from sedeiment core TAN1106/28

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 bein...

Full description

Bibliographic Details
Main Authors: Shuttleworth, Rachael, Bostock, Helen C, Chalk, Thomas B, Calvo, Eva, Jaccard, Samuel L, Pelejero, Carles, Martínez-García, Alfredo, Foster, Gavin L
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
AGE
standard deviation
alkenones
boron isotopes
Calculated
Carbon dioxide
partial pressure
deglacial
Depth
bottom/max
sediment/rock
top/min
water
Magnesium/Calcium ratio
MC-ICP-MS Thermo-Finnigan Neptune
ODP 1090
pH
Size fraction
Sub-Antarctic
TAN1106
TAN1106/28
TAN1106-28
Tangaroa
δ11B
Antarctic
Southern Ocean
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.929100
https://doi.org/10.1594/PANGAEA.929100
Description
Summary: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 TAN1106-28 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) and Foster et al. (2013).

Similar Items