Differentiation in the early earth's interior: Constraints from isotope geochemistry and high-pressure experiments

Tetsu Kogiso; Nozomi Kondo

doi:10.4131/jshpreview.27.256

Differentiation in the early earth's interior: Constraints from isotope geochemistry and high-pressure experiments

Research output: Contribution to journal › Review article › peer-review

Abstract

We conducted isotopic model calculations and high-pressure melting experiments in order to estimate the major element composition of the “missing reservoir”, which is a supposed component that should compensate the difference in ¹⁴²Nd/¹⁴⁴Nd ratio between the bulk silicate Earth and carbonaceous chondrite, from which the Earth is assumed to have formed. Our estimation demonstrated that the missing reservoir should have picritic to komatiitic composition, and that it was likely to have been lost from the Earth's surface by a giant impact event at the last stage of the Earth formation.

Original language	English
Pages (from-to)	256-265
Number of pages	10
Journal	Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
Volume	27
Issue number	4
DOIs	https://doi.org/10.4131/jshpreview.27.256
Publication status	Published - 2017
Externally published	Yes

Keywords

Early crust
Early Earth
Mantle
Melting experiment
Missing reservoir
Neodymium isotope

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.4131/jshpreview.27.256

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title = "Differentiation in the early earth's interior: Constraints from isotope geochemistry and high-pressure experiments",

abstract = "We conducted isotopic model calculations and high-pressure melting experiments in order to estimate the major element composition of the “missing reservoir”, which is a supposed component that should compensate the difference in 142Nd/144Nd ratio between the bulk silicate Earth and carbonaceous chondrite, from which the Earth is assumed to have formed. Our estimation demonstrated that the missing reservoir should have picritic to komatiitic composition, and that it was likely to have been lost from the Earth's surface by a giant impact event at the last stage of the Earth formation.",

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author = "Tetsu Kogiso and Nozomi Kondo",

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language = "English",

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pages = "256--265",

journal = "Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu",

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T2 - Constraints from isotope geochemistry and high-pressure experiments

AU - Kogiso, Tetsu

AU - Kondo, Nozomi

PY - 2017

Y1 - 2017

N2 - We conducted isotopic model calculations and high-pressure melting experiments in order to estimate the major element composition of the “missing reservoir”, which is a supposed component that should compensate the difference in 142Nd/144Nd ratio between the bulk silicate Earth and carbonaceous chondrite, from which the Earth is assumed to have formed. Our estimation demonstrated that the missing reservoir should have picritic to komatiitic composition, and that it was likely to have been lost from the Earth's surface by a giant impact event at the last stage of the Earth formation.

AB - We conducted isotopic model calculations and high-pressure melting experiments in order to estimate the major element composition of the “missing reservoir”, which is a supposed component that should compensate the difference in 142Nd/144Nd ratio between the bulk silicate Earth and carbonaceous chondrite, from which the Earth is assumed to have formed. Our estimation demonstrated that the missing reservoir should have picritic to komatiitic composition, and that it was likely to have been lost from the Earth's surface by a giant impact event at the last stage of the Earth formation.

KW - Early crust

KW - Early Earth

KW - Mantle

KW - Melting experiment

KW - Missing reservoir

KW - Neodymium isotope

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Differentiation in the early earth's interior: Constraints from isotope geochemistry and high-pressure experiments

Abstract

Keywords

ASJC Scopus subject areas

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