The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs

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The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs. / van Kooten, Elishevah; Cavalcante, Larissa; Bizzarro, Martin.

In: Meteoritics and Planetary Science, Vol. 55, No. 3, 01.03.2020, p. 575-590.

Research output: Contribution to journalJournal articlepeer-review

Harvard

van Kooten, E, Cavalcante, L & Bizzarro, M 2020, 'The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs', Meteoritics and Planetary Science, vol. 55, no. 3, pp. 575-590. https://doi.org/10.1111/maps.13459

APA

van Kooten, E., Cavalcante, L., & Bizzarro, M. (2020). The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs. Meteoritics and Planetary Science, 55(3), 575-590. https://doi.org/10.1111/maps.13459

Vancouver

van Kooten E, Cavalcante L, Bizzarro M. The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs. Meteoritics and Planetary Science. 2020 Mar 1;55(3):575-590. https://doi.org/10.1111/maps.13459

Author

van Kooten, Elishevah ; Cavalcante, Larissa ; Bizzarro, Martin. / The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs. In: Meteoritics and Planetary Science. 2020 ; Vol. 55, No. 3. pp. 575-590.

Bibtex

@article{01c40b8916db484787b06061677faf63,
title = "The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs",
abstract = "CM meteorites are dominant members of carbonaceous chondrites (CCs), which evidently accreted in a region separated from the terrestrial planets. These chondrites are key in determining the accretion regions of solar system materials, since in Mg and Cr isotope space, they intersect between what are identified as inner and outer solar system reservoirs. In this model, the outer reservoir is represented by metal-rich carbonaceous chondrites (MRCCs), including CR chondrites. An important question remains whether the barrier between MRCCs and CCs was a temporal or spatial one. CM chondrites and chondrules are used here to identify the nature of the barrier as well as the timescale of chondrite parent body accretion. We find based on high precision Mg and Cr isotope data of seven CM chondrites and 12 chondrules, that accretion in the CM chondrite reservoir was continuous lasting <3 Myr and showing late accretion of MRCC-like material reflected by the anomalous CM chondrite Bells. We further argue that although MRCCs likely accreted later than CM chondrites, CR chondrules must have initially formed from a reservoir spatially separated from CM chondrules. Finally, we hypothesize on the nature of the spatial barrier separating these reservoirs.",
author = "{van Kooten}, Elishevah and Larissa Cavalcante and Martin Bizzarro",
year = "2020",
month = mar,
day = "1",
doi = "10.1111/maps.13459",
language = "English",
volume = "55",
pages = "575--590",
journal = "Meteoritics and Planetary Science",
issn = "1086-9379",
publisher = "JohnWiley & Sons, Inc.",
number = "3",

}

RIS

TY - JOUR

T1 - The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs

AU - van Kooten, Elishevah

AU - Cavalcante, Larissa

AU - Bizzarro, Martin

PY - 2020/3/1

Y1 - 2020/3/1

N2 - CM meteorites are dominant members of carbonaceous chondrites (CCs), which evidently accreted in a region separated from the terrestrial planets. These chondrites are key in determining the accretion regions of solar system materials, since in Mg and Cr isotope space, they intersect between what are identified as inner and outer solar system reservoirs. In this model, the outer reservoir is represented by metal-rich carbonaceous chondrites (MRCCs), including CR chondrites. An important question remains whether the barrier between MRCCs and CCs was a temporal or spatial one. CM chondrites and chondrules are used here to identify the nature of the barrier as well as the timescale of chondrite parent body accretion. We find based on high precision Mg and Cr isotope data of seven CM chondrites and 12 chondrules, that accretion in the CM chondrite reservoir was continuous lasting <3 Myr and showing late accretion of MRCC-like material reflected by the anomalous CM chondrite Bells. We further argue that although MRCCs likely accreted later than CM chondrites, CR chondrules must have initially formed from a reservoir spatially separated from CM chondrules. Finally, we hypothesize on the nature of the spatial barrier separating these reservoirs.

AB - CM meteorites are dominant members of carbonaceous chondrites (CCs), which evidently accreted in a region separated from the terrestrial planets. These chondrites are key in determining the accretion regions of solar system materials, since in Mg and Cr isotope space, they intersect between what are identified as inner and outer solar system reservoirs. In this model, the outer reservoir is represented by metal-rich carbonaceous chondrites (MRCCs), including CR chondrites. An important question remains whether the barrier between MRCCs and CCs was a temporal or spatial one. CM chondrites and chondrules are used here to identify the nature of the barrier as well as the timescale of chondrite parent body accretion. We find based on high precision Mg and Cr isotope data of seven CM chondrites and 12 chondrules, that accretion in the CM chondrite reservoir was continuous lasting <3 Myr and showing late accretion of MRCC-like material reflected by the anomalous CM chondrite Bells. We further argue that although MRCCs likely accreted later than CM chondrites, CR chondrules must have initially formed from a reservoir spatially separated from CM chondrules. Finally, we hypothesize on the nature of the spatial barrier separating these reservoirs.

U2 - 10.1111/maps.13459

DO - 10.1111/maps.13459

M3 - Journal article

C2 - 32362738

AN - SCOPUS:85081253038

VL - 55

SP - 575

EP - 590

JO - Meteoritics and Planetary Science

JF - Meteoritics and Planetary Science

SN - 1086-9379

IS - 3

ER -

ID: 240785865