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Strength and variability of the Oligocene Southern Ocean surface temperature gradient
[post]
2022
unpublished
Large Oligocene Antarctic ice sheets co-existed with warm adjacent ocean waters. To provide a broad Southern Ocean perspective to such warmth, we reconstruct the strength and variability of the Oligocene Australian-Antarctic latitudinal sea surface temperature (SST) gradient. Our Oligocene TEX86-based SST record from offshore southern Australia shows temperate (20–29°C) conditions throughout, despite northward tectonic drift. A persistent SST gradient (~5–10°C) exists between Australia and
doi:10.21203/rs.3.rs-1516446/v1
fatcat:hgefqydnsbd3rbwaddaxzwimde