The vanadium isotope composition of Mars: implications for planetary differentiation in the early solar system

Kód výsledku v IS VaVaI

RIV/00025798:_____/20:00000013 - isvavai.cz

Výsledek na webu

https://www.geochemicalperspectivesletters.org/article2032/

DOI - Digital Object Identifier

10.7185/geochemlet.2032

Jazyk výsledku

angličtina

Název v původním jazyce

The vanadium isotope composition of Mars: implications for planetary differentiation in the early solar system

Popis výsledku v původním jazyce

The V isotope composition of martian meteorites reveals that Bulk Silicate Mars (BSM) is characterised by d51V = −1.026 ± 0.029 permil (2 s.e.) and is thus ∼0.06 per mille heavier than chondrites and ∼0.17 permil lighter than Bulk Silicate Earth (BSE). Based on the invariant V isotope compositions of all chondrite groups, the heavier V isotope compositions of BSE and BSM relative to chondrites are unlikely to originate from mass independent isotope effects or evaporation/condensation processes in the early Solar System. These differences are best accounted for by mass dependent fractionation during core formation. Assuming that bulk Earth and Mars both have a chondritic V isotopic compostion, mass balance considerations reveal V isotope fractionation factors D51Vcore-mantle as substantial as −0.6 permil for both planets. This suggests that V isotope systematics in terrestrial and extraterrestrial rocks potentially constitutes a powerful new tracer of planetary differentiation processes accross the Solar System.

Název v anglickém jazyce

The vanadium isotope composition of Mars: implications for planetary differentiation in the early solar system

Popis výsledku anglicky

The V isotope composition of martian meteorites reveals that Bulk Silicate Mars (BSM) is characterised by d51V = −1.026 ± 0.029 permil (2 s.e.) and is thus ∼0.06 per mille heavier than chondrites and ∼0.17 permil lighter than Bulk Silicate Earth (BSE). Based on the invariant V isotope compositions of all chondrite groups, the heavier V isotope compositions of BSE and BSM relative to chondrites are unlikely to originate from mass independent isotope effects or evaporation/condensation processes in the early Solar System. These differences are best accounted for by mass dependent fractionation during core formation. Assuming that bulk Earth and Mars both have a chondritic V isotopic compostion, mass balance considerations reveal V isotope fractionation factors D51Vcore-mantle as substantial as −0.6 permil for both planets. This suggests that V isotope systematics in terrestrial and extraterrestrial rocks potentially constitutes a powerful new tracer of planetary differentiation processes accross the Solar System.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geochemical Perspectives Letters

ISSN

2410-339X

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

5

Strana od-do

35-39

Kód UT WoS článku

000582739500001

EID výsledku v databázi Scopus

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