Paleoceanography and ice sheet variability offshore Wilkes Land, Antarctica – Part 3: Insights from Oligocene–Miocene TEX86-based sea surface temperature reconstructions
Julian D. Hartman,Francesca Sangiorgi,Ariadna Salabarnada,Francien Peterse,Alexander J. P. Houben,Stefan Schouten,Henk Brinkhuis,Carlota Escutia,and Peter K. Bijl
Marine Palynology and Paleoceanography, Laboratory of Palaeobotany
and Palynology, Department of Earth Sciences, Utrecht University,
Princetonlaan 8a, 3584CB Utrecht, the Netherlands
Marine Palynology and Paleoceanography, Laboratory of Palaeobotany
and Palynology, Department of Earth Sciences, Utrecht University,
Princetonlaan 8a, 3584CB Utrecht, the Netherlands
Ariadna Salabarnada
Instituto
Andaluz de Ciencias de la Tierra, CSIC/Universidad de Granada, Avenida de las
Palmeras 4, 18100 Armilla, Granada, Spain
Marine Palynology and Paleoceanography, Laboratory of Palaeobotany
and Palynology, Department of Earth Sciences, Utrecht University,
Princetonlaan 8a, 3584CB Utrecht, the Netherlands
Marine Palynology and Paleoceanography, Laboratory of Palaeobotany
and Palynology, Department of Earth Sciences, Utrecht University,
Princetonlaan 8a, 3584CB Utrecht, the Netherlands
NIOZ Royal
Netherlands Institute for Sea Research, and Utrecht University, Landsdiep 4,
1797SZ 't Horntje, Texel, the Netherlands
Marine Palynology and Paleoceanography, Laboratory of Palaeobotany
and Palynology, Department of Earth Sciences, Utrecht University,
Princetonlaan 8a, 3584CB Utrecht, the Netherlands
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We reconstructed sea surface temperatures for the Oligocene and Miocene periods (34–11 Ma) based on archaeal lipids from a site close to the Wilkes Land coast, Antarctica. Our record suggests generally warm to temperate surface waters: on average 17 °C. Based on the lithology, glacial and interglacial temperatures could be distinguished, showing an average 3 °C offset. The long-term temperature trend resembles the benthic δ18O stack, which may have implications for ice volume reconstructions.
We reconstructed sea surface temperatures for the Oligocene and Miocene periods (34–11 Ma) based...
