Abstract
In 1995, an expedition on board the research vessel FS Polarstern explored the impact site of the Eltanin asteroid in the Southern Ocean, the only known asteroidimpact into a deep ocean basin. Analyses of the geological record of the impact region place the event in the late Pliocene (∼2.15 Myr) and constrain thesize of the asteroid to be >1 km. The explosive force inferred for this event places it at the threshold of impacts believed to have global consequences, and its studyshould therefore provide a baseline for the reconstruction and modelling of similar events, which are common on geological timescales.
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Acknowledgements
This research was supported by Acciones Integradas grants to R.G. and J.A.F., and an NSF grant to F.T.K. and J.A.B. We thank the crew of RV Polarstern for their substantial support.
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Gersonde, R., Kyte, F., Bleil, U. et al. Geological record and reconstruction of the late Pliocene impact of the Eltanin asteroid in the Southern Ocean. Nature 390, 357–363 (1997). https://doi.org/10.1038/37044
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DOI: https://doi.org/10.1038/37044
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