@article {634693,
	title = {An isotopically distinct Zealandia{\textendash}Antarctic mantle domain in the Southern Ocean},
	journal = {Nature Geoscience},
	volume = {12},
	number = {3},
	year = {2019},
	pages = {206-214},
	abstract = {Article\&nbsp;|\&nbsp;Published:\&nbsp;28 January 2019An isotopically distinct Zealandia{\textendash}Antarctic mantle domain in the Southern OceanSung-Hyun Park,\&nbsp;Charles H. Langmuir,\&nbsp;Kenneth W. W. Sims,\&nbsp;Janne Blichert-Toft,\&nbsp;Seung-Sep Kim,\&nbsp;Sean R. Scott,\&nbsp;Jian Lin,\&nbsp;Hakkyum Choi,\&nbsp;Yun-Seok Yang\&nbsp;\&amp;\&nbsp;Peter J. Michael\&nbsp;Nature Geosciencevolume\&nbsp;12,\&nbsp;pages206{\textendash}214\&nbsp;(2019)\&nbsp;|\&nbsp;Download CitationAbstractThe mantle sources of mid-ocean ridge basalts beneath the Indian and Pacific oceans have distinct isotopic compositions with a long-accepted boundary at the Australian{\textendash}Antarctic Discordance along the Southeast Indian Ridge. This boundary has been widely used to place constraints on large-scale patterns of mantle flow and composition in the Earth{\textquoteright}s upper mantle. Sampling between the Indian and Pacific ridges, however, has been lacking, especially along the remote 2,000 km expanse of the Australian{\textendash}Antarctic Ridge. Here we present Sr, Nd, Hf and Pb isotope data from this region that show the Australian{\textendash}Antarctic Ridge has isotopic compositions distinct from both the Pacific and Indian mantle domains. These data define a separate Zealandia{\textendash}Antarctic domain that appears to have formed in response to the deep mantle upwelling and ensuing volcanism that led to the break-up of Gondwana 90 million years ago, and currently persists at the margins of the Antarctic continent. The relatively shallow depths of the Australian{\textendash}Antarctic Ridge may be the result of this deep mantle upwelling. Large offset transforms to the east may be the boundary with the Pacific domain.},
	url = {https://www.nature.com/articles/s41561-018-0292-4},
	author = {Park, SH and Langmuir, C.H. and K. W. W. Sims and Blichert-Toft, J and S.S. Kim and Scott, SR and Lin, J and Choi, H and Yang, YS and Michael, P.J.}
}
