Detail publikačního výsledku

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.

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

oxidized majorite inclusion; Earth's deep asthenosphere

Klíčová slova v angličtině

oxidized majorite inclusion; Earth's deep asthenosphere

Autoři

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

Rok RIV

2020

Vydáno

30.04.2017

ISSN

2375-2548

Periodikum

Science Advances

Svazek

3

Číslo

4

Stát

Spojené státy americké

Strany od

1

Strany do

6

Strany počet

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",
  url="https://advances.sciencemag.org/content/3/4/e1601589"
}