Boron and oxygen isotope evidence for recycling of subducted components over the past 2.5 Gyr

Simon Turner (), Sonia Tonarini, Ilya Bindeman, William P. Leeman and Bruce F. Schaefer
Additional contact information
Simon Turner: GEMOC, Macquarie University, Sydney, New South Wales 2109, Australia
Sonia Tonarini: Istituto di Geoscienze e Georisorse, Via Moruzzi 1, 56147 Pisa, Italy
Ilya Bindeman: University of Wisconsin, 1215 West Dayton Street, Madison, Wisconsin 53706, USA
William P. Leeman: National Science Foundation, 4201 Wilson Blvd, Arlington, Virginia 22230, USA
Bruce F. Schaefer: School of Geosciences, Monash University, PO Box 28E, Clayton, Victoria 3800, Australia

Nature, 2007, vol. 447, issue 7145, 702-705

Abstract: Mantle recycling The volcanic and seismological activity of the Earth are indicative of its active interior and the recycling of surface oceanic plates through the mantle, but the nature and timescales of this process are not well understood. To help constrain the extent of such deep recycling, Turner et al. analysed the oxygen, niobium, boron and osmium isotope content of basalts from the Azores Islands. The results suggest that some of this material derives from melt- and fluid-depleted lithospheric mantle that is at least 2.5 billion years old, whereas other Azores basalts are thought to contain a contribution from melt-enriched basalt some 3 billion years old. It seems likely that both components derive from an Archaean oceanic plate that was subducted and stored at depth, until thermal buoyancy caused it to rise beneath the Azores islands some 3 billion years later.

Date: 2007
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/nature05898 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:447:y:2007:i:7145:d:10.1038_nature05898

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/nature05898

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().