Igneous meteorites suggest Aluminium-26 heterogeneity in the early Solar Nebula

Evgenii Krestianinov; Yuri Amelin; Qing Zhu Yin; Paige Cary; Magdalena H. Huyskens; Audrey Miller; Supratim Dey; Yuki Hibiya; Haolan Tang; Edward D. Young; Andreas Pack; Tommaso Di Rocco

doi:10.1038/s41467-023-40026-1

Igneous meteorites suggest Aluminium-26 heterogeneity in the early Solar Nebula

Evgenii Krestianinov^*, Yuri Amelin, Qing Zhu Yin, Paige Cary, Magdalena H. Huyskens, Audrey Miller, Supratim Dey, Yuki Hibiya, Haolan Tang, Edward D. Young, Andreas Pack, Tommaso Di Rocco

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The short-lived radionuclide aluminium-26 (²⁶Al) isotope is a major heat source for early planetary melting. The aluminium-26 – magnesium-26 (²⁶Al-²⁶Mg) decay system also serves as a high-resolution relative chronometer. In both cases, however, it is critical to establish whether ²⁶Al was homogeneously or heterogeneously distributed throughout the solar nebula. Here we report a precise lead-207 – lead-206 (²⁰⁷Pb-²⁰⁶Pb) isotopic age of 4565.56 ± 0.12 million years (Ma) for the andesitic achondrite Erg Chech 002. Our analysis, in conjunction with published ²⁶Al-²⁶Mg data, reveals that the initial ²⁶Al/²⁷Al in the source material of this achondrite was notably higher than in various other well-preserved and precisely dated achondrites. Here we demonstrate that the current data clearly indicate spatial heterogeneity of ²⁶Al by a factor of 3-4 in the precursor molecular cloud or the protoplanetary disk of the Solar System, likely associated with the late infall of stellar materials with freshly synthesized radionuclides.

Original language	English
Article number	4940
Journal	Nature Communications
Volume	14
Issue number	1
DOIs	https://doi.org/10.1038/s41467-023-40026-1
Publication status	Published - Dec 2023

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@article{89efdd752d434d7c8d43a8da3f139263,

title = "Igneous meteorites suggest Aluminium-26 heterogeneity in the early Solar Nebula",

abstract = "The short-lived radionuclide aluminium-26 (26Al) isotope is a major heat source for early planetary melting. The aluminium-26 – magnesium-26 (26Al-26Mg) decay system also serves as a high-resolution relative chronometer. In both cases, however, it is critical to establish whether 26Al was homogeneously or heterogeneously distributed throughout the solar nebula. Here we report a precise lead-207 – lead-206 (207Pb-206Pb) isotopic age of 4565.56 ± 0.12 million years (Ma) for the andesitic achondrite Erg Chech 002. Our analysis, in conjunction with published 26Al-26Mg data, reveals that the initial 26Al/27Al in the source material of this achondrite was notably higher than in various other well-preserved and precisely dated achondrites. Here we demonstrate that the current data clearly indicate spatial heterogeneity of 26Al by a factor of 3-4 in the precursor molecular cloud or the protoplanetary disk of the Solar System, likely associated with the late infall of stellar materials with freshly synthesized radionuclides.",

author = "Evgenii Krestianinov and Yuri Amelin and Yin, {Qing Zhu} and Paige Cary and Huyskens, {Magdalena H.} and Audrey Miller and Supratim Dey and Yuki Hibiya and Haolan Tang and Young, {Edward D.} and Andreas Pack and {Di Rocco}, Tommaso",

note = "Publisher Copyright: {\textcopyright} 2023, Springer Nature Limited.",

year = "2023",

month = dec,

doi = "10.1038/s41467-023-40026-1",

language = "English",

volume = "14",

journal = "Nature Communications",

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T1 - Igneous meteorites suggest Aluminium-26 heterogeneity in the early Solar Nebula

AU - Krestianinov, Evgenii

AU - Amelin, Yuri

AU - Yin, Qing Zhu

AU - Cary, Paige

AU - Huyskens, Magdalena H.

AU - Miller, Audrey

AU - Dey, Supratim

AU - Hibiya, Yuki

AU - Tang, Haolan

AU - Young, Edward D.

AU - Pack, Andreas

AU - Di Rocco, Tommaso

PY - 2023/12

Y1 - 2023/12

N2 - The short-lived radionuclide aluminium-26 (26Al) isotope is a major heat source for early planetary melting. The aluminium-26 – magnesium-26 (26Al-26Mg) decay system also serves as a high-resolution relative chronometer. In both cases, however, it is critical to establish whether 26Al was homogeneously or heterogeneously distributed throughout the solar nebula. Here we report a precise lead-207 – lead-206 (207Pb-206Pb) isotopic age of 4565.56 ± 0.12 million years (Ma) for the andesitic achondrite Erg Chech 002. Our analysis, in conjunction with published 26Al-26Mg data, reveals that the initial 26Al/27Al in the source material of this achondrite was notably higher than in various other well-preserved and precisely dated achondrites. Here we demonstrate that the current data clearly indicate spatial heterogeneity of 26Al by a factor of 3-4 in the precursor molecular cloud or the protoplanetary disk of the Solar System, likely associated with the late infall of stellar materials with freshly synthesized radionuclides.

AB - The short-lived radionuclide aluminium-26 (26Al) isotope is a major heat source for early planetary melting. The aluminium-26 – magnesium-26 (26Al-26Mg) decay system also serves as a high-resolution relative chronometer. In both cases, however, it is critical to establish whether 26Al was homogeneously or heterogeneously distributed throughout the solar nebula. Here we report a precise lead-207 – lead-206 (207Pb-206Pb) isotopic age of 4565.56 ± 0.12 million years (Ma) for the andesitic achondrite Erg Chech 002. Our analysis, in conjunction with published 26Al-26Mg data, reveals that the initial 26Al/27Al in the source material of this achondrite was notably higher than in various other well-preserved and precisely dated achondrites. Here we demonstrate that the current data clearly indicate spatial heterogeneity of 26Al by a factor of 3-4 in the precursor molecular cloud or the protoplanetary disk of the Solar System, likely associated with the late infall of stellar materials with freshly synthesized radionuclides.

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U2 - 10.1038/s41467-023-40026-1

DO - 10.1038/s41467-023-40026-1

M3 - Article

SN - 2041-1723

VL - 14

JO - Nature Communications

JF - Nature Communications

IS - 1

M1 - 4940

ER -

Igneous meteorites suggest Aluminium-26 heterogeneity in the early Solar Nebula

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