Timing and Climatic Consequences of the Opening of Drake Passage

@article{Scher2006TimingAC,
  title={Timing and Climatic Consequences of the Opening of Drake Passage},
  author={Howie D. Scher and Ellen E. Martin},
  journal={Science},
  year={2006},
  volume={312},
  pages={428 - 430}
}
Age estimates for the opening of Drake Passage range from 49 to 17 million years ago (Ma), complicating interpretations of the relationship between ocean circulation and global cooling. Secular variations of neodymium isotope ratios at Agulhas Ridge (Southern Ocean, Atlantic sector) suggest an influx of shallow Pacific seawater approximately 41 Ma. The timing of this connection and the subsequent deepening of the passage coincide with increased biological productivity and abrupt climate… 
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References

SHOWING 1-10 OF 60 REFERENCES

Paleogene opening of Drake Passage

Eocene-Oligocene transition in the Southern Ocean: History of water mass circulation and biological productivity

High-resolution records of carbon and oxygen isotopes and benthic foraminiferal accumulation rates for the Eocene-Oligocene section at Ocean Drilling Program Site 689(Maud Rise, Weddell Sea;…

Eocene to Miocene terrigenous inputs and export production: geochemical evidence from ODP Leg 177, Site 1090

Timing and nature of the deepening of the Tasmanian Gateway

[1] Tectonic changes that produced a deep Tasmanian Gateway between Australia and Antarctica are widely invoked as the major mechanism for Antarctic cryosphere growth and Antarctic Circumpolar…

Rapid Cenozoic glaciation of Antarctica induced by declining atmospheric CO2

In this simulation, declining Cenozoic CO2 first leads to the formation of small, highly dynamic ice caps on high Antarctic plateaux, and at a later time, a CO2 threshold is crossed, initiating ice-sheet height/mass-balance feedbacks that cause the ice caps to expand rapidly with large orbital variations, eventually coalescing into a continental-scale East Antarctic Ice Sheet.

Eocene bipolar glaciation associated with global carbon cycle changes

The transition from the extreme global warmth of the early Eocene ‘greenhouse’ climate ∼55 million years ago to the present glaciated state is one of the most prominent changes in Earth's climatic…

Origin, signature and palaeoclimatic influence of the Antarctic Circumpolar Current

Eocene-Oligocene Climatic and Biotic Evolution

The transition from the Eocene to the Oligocene epoch was the most significant event in Earth history since the extinction of dinosaurs. As the first Antarctic ice sheets appeared, major extinctions…

Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present

This work focuses primarily on the periodic and anomalous components of variability over the early portion of this era, as constrained by the latest generation of deep-sea isotope records.

Significant Southern Ocean warming event in the late middle Eocene

A prominent middle Eocene warming event is identified in Southern Ocean deep-sea cores, indicating that long-term cooling through the middle and late Eocene was not monotonic. At sites on Maud Rise…
...