Chaotic topography, mantle flow and mantle migration in the Australian–Antarctic discordance

@article{Christie1998ChaoticTM,
  title={Chaotic topography, mantle flow and mantle migration in the Australian–Antarctic discordance},
  author={David M. Christie and Brian P. West and Douglas G. Pyle and Barry B. Hanan},
  journal={Nature},
  year={1998},
  volume={394},
  pages={637-644}
}
Oceanic crust formed over the past 30 million years at the Australian–Antarctic discordance (AAD) is characterized by chaotic sea-floor topography, reflecting a weak magma supply from an unusually cold underlying mantle. During the past 3–4 million years, however, a source of increased magma supply, coinciding with the known Indian–Pacific mantle isotopic boundary, has propagated into the eastern AAD, displacing the chaotic terrain and replacing it with normal sea floor. Pacific mantle reached… CONTINUE READING

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