Alkenone stable carbon isotopes, carbonate stable carbon and oxygen isotopes, planktic foraminifera boron isotopes and atmospheric CO2 calculations and box model results from Ras il-Pellegrin section, Malta ...

• Main Authors: Badger, Marcus P S, Lear, Caroline H, Pancost, Richard D, Foster, Gavin L, Bailey, Trevor R, Leng, Melanie J, Abels, Hemmo A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2013
• Subjects: Outcrop sample; Antarc*; Antarctic; Antarctica; East Antarctica; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.837617; https://doi.pangaea.de/10.1594/PANGAEA.837617

The development of a permanent, stable ice sheet in East Antarctica happened during the middle Miocene, about 14 million years (Myr) ago. The middle Miocene therefore represents one of the distinct phases of rapid change in the transition from the "greenhouse" of the early Eocene to the "icehouse" of the present day. Carbonate carbon isotope records of the period immediately following the main stage of ice sheet development reveal a major perturbation in the carbon system, represented by the positive d13C excursion known as carbon maximum 6 ("M6"), which has traditionally been interpreted as reflecting increased burial of organic matter and atmospheric pCO2 drawdown. More recently, it has been suggested that the d13C excursion records a negative feedback resulting from the reduction of silicate weathering and an increase in atmospheric pCO2. Here we present high-resolution multi-proxy (alkenone carbon and foraminiferal boron isotope) records of atmospheric carbon dioxide and sea surface temperature across ... : Supplement to: Badger, Marcus P S; Lear, Caroline H; Pancost, Richard D; Foster, Gavin L; Bailey, Trevor R; Leng, Melanie J; Abels, Hemmo A (2013): CO2 drawdown following the middle Miocene expansion of the Antarctic Ice Sheet. Paleoceanography, 28(1), 42-53 ...