Trace element partitioning between silicate perovskites and ultracalcic melt

Hiroshi Taura, Hisayoshi Yurimoto, Takumi Kato, Shigeho Sueno

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Determination of partition coefficients for Mg- and Ca-perovskite/melt has been performed for 27 trace elements by combination of high pressure-temperature experiments using a multi-anvil apparatus and in situ trace element analysis by secondary ion mass spectrometry (SIMS). Each of the crystallographic sites for the perovskites gives rise to a parabola-shaped peak on the partition coefficient versus ionic radius diagram. This suggests that the elemental partitioning is governed by the structural control even under the lower mantle condition. On the diagrams for Mg- and Ca-perovskites, sharpness and peak position of peaks are consistent with geometrical flexibility of the corresponding coordination polyhedra. The relative height between the partition curves for homovalent ions is controlled by electrostatic charge balancing among their crystallographic sites. Large partition coefficients of Th and U in Ca-perovskite suggest that these elements play an important role for the heat source in the Earth's lower mantle.

Original languageEnglish
Pages (from-to)25-32
Number of pages8
JournalPhysics of the Earth and Planetary Interiors
Volume124
Issue number1-2
DOIs
Publication statusPublished - Jan 1 2001

Fingerprint

perovskites
partition coefficient
trace elements
partitions
silicates
partitioning
silicate
perovskite
trace element
melt
lower mantle
diagram
Earth mantle
coefficients
ion
structural control
diagrams
heat source
electrostatic charge
parabolas

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Geophysics
  • Physics and Astronomy (miscellaneous)
  • Space and Planetary Science

Cite this

Trace element partitioning between silicate perovskites and ultracalcic melt. / Taura, Hiroshi; Yurimoto, Hisayoshi; Kato, Takumi; Sueno, Shigeho.

In: Physics of the Earth and Planetary Interiors, Vol. 124, No. 1-2, 01.01.2001, p. 25-32.

Research output: Contribution to journalArticle

Taura, Hiroshi ; Yurimoto, Hisayoshi ; Kato, Takumi ; Sueno, Shigeho. / Trace element partitioning between silicate perovskites and ultracalcic melt. In: Physics of the Earth and Planetary Interiors. 2001 ; Vol. 124, No. 1-2. pp. 25-32.
@article{f97b50917f2541ac8185214f0bc2d47c,
title = "Trace element partitioning between silicate perovskites and ultracalcic melt",
abstract = "Determination of partition coefficients for Mg- and Ca-perovskite/melt has been performed for 27 trace elements by combination of high pressure-temperature experiments using a multi-anvil apparatus and in situ trace element analysis by secondary ion mass spectrometry (SIMS). Each of the crystallographic sites for the perovskites gives rise to a parabola-shaped peak on the partition coefficient versus ionic radius diagram. This suggests that the elemental partitioning is governed by the structural control even under the lower mantle condition. On the diagrams for Mg- and Ca-perovskites, sharpness and peak position of peaks are consistent with geometrical flexibility of the corresponding coordination polyhedra. The relative height between the partition curves for homovalent ions is controlled by electrostatic charge balancing among their crystallographic sites. Large partition coefficients of Th and U in Ca-perovskite suggest that these elements play an important role for the heat source in the Earth's lower mantle.",
author = "Hiroshi Taura and Hisayoshi Yurimoto and Takumi Kato and Shigeho Sueno",
year = "2001",
month = "1",
day = "1",
doi = "10.1016/S0031-9201(00)00221-1",
language = "English",
volume = "124",
pages = "25--32",
journal = "Physics of the Earth and Planetary Interiors",
issn = "0031-9201",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Trace element partitioning between silicate perovskites and ultracalcic melt

AU - Taura, Hiroshi

AU - Yurimoto, Hisayoshi

AU - Kato, Takumi

AU - Sueno, Shigeho

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Determination of partition coefficients for Mg- and Ca-perovskite/melt has been performed for 27 trace elements by combination of high pressure-temperature experiments using a multi-anvil apparatus and in situ trace element analysis by secondary ion mass spectrometry (SIMS). Each of the crystallographic sites for the perovskites gives rise to a parabola-shaped peak on the partition coefficient versus ionic radius diagram. This suggests that the elemental partitioning is governed by the structural control even under the lower mantle condition. On the diagrams for Mg- and Ca-perovskites, sharpness and peak position of peaks are consistent with geometrical flexibility of the corresponding coordination polyhedra. The relative height between the partition curves for homovalent ions is controlled by electrostatic charge balancing among their crystallographic sites. Large partition coefficients of Th and U in Ca-perovskite suggest that these elements play an important role for the heat source in the Earth's lower mantle.

AB - Determination of partition coefficients for Mg- and Ca-perovskite/melt has been performed for 27 trace elements by combination of high pressure-temperature experiments using a multi-anvil apparatus and in situ trace element analysis by secondary ion mass spectrometry (SIMS). Each of the crystallographic sites for the perovskites gives rise to a parabola-shaped peak on the partition coefficient versus ionic radius diagram. This suggests that the elemental partitioning is governed by the structural control even under the lower mantle condition. On the diagrams for Mg- and Ca-perovskites, sharpness and peak position of peaks are consistent with geometrical flexibility of the corresponding coordination polyhedra. The relative height between the partition curves for homovalent ions is controlled by electrostatic charge balancing among their crystallographic sites. Large partition coefficients of Th and U in Ca-perovskite suggest that these elements play an important role for the heat source in the Earth's lower mantle.

UR - http://www.scopus.com/inward/record.url?scp=0034981226&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034981226&partnerID=8YFLogxK

U2 - 10.1016/S0031-9201(00)00221-1

DO - 10.1016/S0031-9201(00)00221-1

M3 - Article

AN - SCOPUS:0034981226

VL - 124

SP - 25

EP - 32

JO - Physics of the Earth and Planetary Interiors

JF - Physics of the Earth and Planetary Interiors

SN - 0031-9201

IS - 1-2

ER -