Alkenone determination from sediment 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...

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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 - Data Publisher for Earth & Environmental Science 2021
Subjects:
alkenones
boron isotopes
deglacial
ODP 1090
Sub-Antarctic
TAN1106-28
DEPTH, sediment/rock
AGE
Alkenone, C37 per unit sediment mass
n-Alkane, flux
Gas Chromatograph, Agilent 7890
TAN1106
Tangaroa
Antarctic
Southern Ocean
Villanueva
Antarc*
Online Access:https://dx.doi.org/10.1594/pangaea.929102
https://doi.pangaea.de/10.1594/PANGAEA.929102
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 deglacial alkenone and n-alkane records. Analysis and characterization of total lipid content were performed at Institut de Ciències del Mar in Barcelona following published methods (Villanueva et al., 1997; doi:10.1016/S0021-9673(96)00669-3, Calvo et al., 2003; doi:10.1016/S0021-9673(03)00119-5, Kornilova and Rosell-Melé, 2003; doi:10.1016/S0146-6380(03)00155-4) on an Agilent 7890 Gas Chromatograph with a flame ionization detector equipped with a HP-1 capillary column (60 m, 0.25 mm I.D. and 0.25 µm film thickness).

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