Publication detail

Recovery of an oxidized majorite inclusion from Earth's deep asthenosphere

XU, C. KYNICKÝ, J. TAO, R. LIU, X. ZHANG, LF. POHANKA, M. SONG, W. FEI, YW.

Original Title

Recovery of an oxidized majorite inclusion from Earth's deep asthenosphere

Type

journal article in Web of Science

Language

English

Original Abstract

Minerals recovered from the deep mantle provide a rare glimpse into deep Earth processes. We report the first discovery of ferric iron-rich majoritic garnet found as inclusions in a host garnet within an eclogite xenolith originating in the deep mantle. The composition of the host garnet indicates an ultrahigh-pressure metamorphic origin, probably at a depth of similar to 200 km. More importantly, the ferric iron-rich majoritic garnet inclusions show a much deeper origin, at least at a depth of 380 km. The majoritic nature of the inclusions is confirmed by mineral chemistry, x-ray diffraction, and Raman spectroscopy, and their depth of origin is constrained by a new experimental calibration. The unique relationship between the majoritic inclusions and their host garnet has important implications for mantle dynamics within the deep asthenosphere. The high ferric iron content of the inclusions provides insights into the oxidation state of the deep upper mantle.

Keywords

oxidized majorite inclusion; Earth's deep asthenosphere

Authors

XU, C.; KYNICKÝ, J.; TAO, R.; LIU, X.; ZHANG, LF.; POHANKA, M.; SONG, W.; FEI, YW.

Released

30. 4. 2017

ISBN

2375-2548

Periodical

Science Advances

Year of study

3

Number

4

State

United States of America

Pages from

1

Pages to

6

Pages count

6

URL

https://advances.sciencemag.org/content/3/4/e1601589

BibTex

@article{BUT163363,
  author="XU, C. and KYNICKÝ, J. and TAO, R. and LIU, X. and ZHANG, LF. and POHANKA, M. and SONG, W. and FEI, YW.",
  title="Recovery of an oxidized majorite inclusion from Earth's deep asthenosphere
",
  journal="Science Advances",
  year="2017",
  volume="3",
  number="4",
  pages="1--6",
  doi="10.1126/sciadv.1601589",
  issn="2375-2548",
  url="https://advances.sciencemag.org/content/3/4/e1601589"
}