globalchange  > 气候变化事实与影响
Scopus ID: 2-s2.0-85060821865
An isotopically distinct Zealandia–Antarctic mantle domain in the Southern Ocean
Author: Park S.-H.; Langmuir C.H.; Sims K.W.W.; Blichert-Toft J.; Kim S.-S.; Scott S.R.; Lin J.; Choi H.; Yang Y.-S.; Michael P.J.
Source Publication: Nature Geoscience
ISSN: 17520894
Publishing Year: 2019
Language: 英语
English Abstract: The 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–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’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–Antarctic Ridge. Here we present Sr, Nd, Hf and Pb isotope data from this region that show the Australian–Antarctic Ridge has isotopic compositions distinct from both the Pacific and Indian mantle domains. These data define a separate Zealandia–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–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. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
Document Type: 期刊论文
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.

Affiliation: Korea Polar Research Institute, Incheon, South Korea; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Department of Geology and Geophysics, University of Wyoming, Laramie, WY, United States; Laboratoire de Géologie de Lyon, Ecole Normale Supérieure de Lyon and Université Claude Bernard Lyon 1, CNRS UMR 5276, Lyon, France; Department of Geology and Earth Environmental Sciences, Chungnam National University, Daejeon, South Korea; Departement of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Department of Geosciences, University of Tulsa, Tulsa, OK, United States

Recommended Citation:
Park S.-H.,Langmuir C.H.,Sims K.W.W.,et al. An isotopically distinct Zealandia–Antarctic mantle domain in the Southern Ocean[J]. Nature Geoscience,2019-01-01
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Park S.-H.]'s Articles
[Langmuir C.H.]'s Articles
[Sims K.W.W.]'s Articles
Similar articles in Baidu Scholar
[Park S.-H.]'s Articles
[Langmuir C.H.]'s Articles
[Sims K.W.W.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Park S.-H.]‘s Articles
[Langmuir C.H.]‘s Articles
[Sims K.W.W.]‘s Articles
Related Copyright Policies
所有评论 (0)

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.