I-Type Cosmic Spherules as Proxy for the Δ′17O of the Atmosphere: A Calibration With Quraternary Air

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

Externe Organisationen

  • Georg-August-Universität Göttingen
  • Max-Planck-Institut für Sonnensystemforschung
  • University of Pisa
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummere2020PA004159
FachzeitschriftPaleoceanography and Paleoclimatology
Jahrgang36
Ausgabenummer3
PublikationsstatusVeröffentlicht - 17 Feb. 2021

Abstract

Remnants of shooting stars are preserved in form of cosmic spherules in ice and sediments. The extraterrestrial material is heated and melted upon atmospheric entry and is collected at the Earth's surface as cosmic spherules. A fraction of cosmic spherules (I-type cosmic spherules) sources from extraterrestrial Fe,Ni metal. These metal particles melt and become oxidized in the atmosphere. The oxygen in the resulting oxides (magnetite, wüstite) sources entirely from the atmosphere. Here, we demonstrate that I-type cosmic spherules can be used to reconstruct the triple oxygen isotope anomaly of the past atmosphere, which provides information on the gross primary productivity and/or paleo-CO2 levels. We present a calibration of the proxy using Antarctic cosmic spherules. We further introduce Δ′56Fe and demonstrate that triple iron isotopes can be used to obtain information about the underlying fractionation mechanism (e.g., kinetic vs. equilibrium fractionation).

ASJC Scopus Sachgebiete

Zitieren

I-Type Cosmic Spherules as Proxy for the Δ′17O of the Atmosphere: A Calibration With Quraternary Air. / Fischer, Meike B.; Oeser, Martin; Weyer, Stefan et al.
in: Paleoceanography and Paleoclimatology, Jahrgang 36, Nr. 3, e2020PA004159, 17.02.2021.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Fischer, MB, Oeser, M, Weyer, S, Folco, L, Peters, STM, Zahnow, F & Pack, A 2021, 'I-Type Cosmic Spherules as Proxy for the Δ′17O of the Atmosphere: A Calibration With Quraternary Air', Paleoceanography and Paleoclimatology, Jg. 36, Nr. 3, e2020PA004159. https://doi.org/10.1029/2020PA004159
Fischer, M. B., Oeser, M., Weyer, S., Folco, L., Peters, S. T. M., Zahnow, F., & Pack, A. (2021). I-Type Cosmic Spherules as Proxy for the Δ′17O of the Atmosphere: A Calibration With Quraternary Air. Paleoceanography and Paleoclimatology, 36(3), Artikel e2020PA004159. https://doi.org/10.1029/2020PA004159
Fischer MB, Oeser M, Weyer S, Folco L, Peters STM, Zahnow F et al. I-Type Cosmic Spherules as Proxy for the Δ′17O of the Atmosphere: A Calibration With Quraternary Air. Paleoceanography and Paleoclimatology. 2021 Feb 17;36(3):e2020PA004159. doi: 10.1029/2020PA004159
Fischer, Meike B. ; Oeser, Martin ; Weyer, Stefan et al. / I-Type Cosmic Spherules as Proxy for the Δ′17O of the Atmosphere : A Calibration With Quraternary Air. in: Paleoceanography and Paleoclimatology. 2021 ; Jahrgang 36, Nr. 3.
Download
@article{5e08608e52444795ad04f474fbdad851,
title = "I-Type Cosmic Spherules as Proxy for the Δ′17O of the Atmosphere: A Calibration With Quraternary Air",
abstract = "Remnants of shooting stars are preserved in form of cosmic spherules in ice and sediments. The extraterrestrial material is heated and melted upon atmospheric entry and is collected at the Earth's surface as cosmic spherules. A fraction of cosmic spherules (I-type cosmic spherules) sources from extraterrestrial Fe,Ni metal. These metal particles melt and become oxidized in the atmosphere. The oxygen in the resulting oxides (magnetite, w{\"u}stite) sources entirely from the atmosphere. Here, we demonstrate that I-type cosmic spherules can be used to reconstruct the triple oxygen isotope anomaly of the past atmosphere, which provides information on the gross primary productivity and/or paleo-CO2 levels. We present a calibration of the proxy using Antarctic cosmic spherules. We further introduce Δ′56Fe and demonstrate that triple iron isotopes can be used to obtain information about the underlying fractionation mechanism (e.g., kinetic vs. equilibrium fractionation).",
keywords = "atmosphere, cosmic, isotopes, oxygen, spherules",
author = "Fischer, {Meike B.} and Martin Oeser and Stefan Weyer and Luigi Folco and Peters, {Stefan T.M.} and Fabian Zahnow and Andreas Pack",
year = "2021",
month = feb,
day = "17",
doi = "10.1029/2020PA004159",
language = "English",
volume = "36",
number = "3",

}

Download

TY - JOUR

T1 - I-Type Cosmic Spherules as Proxy for the Δ′17O of the Atmosphere

T2 - A Calibration With Quraternary Air

AU - Fischer, Meike B.

AU - Oeser, Martin

AU - Weyer, Stefan

AU - Folco, Luigi

AU - Peters, Stefan T.M.

AU - Zahnow, Fabian

AU - Pack, Andreas

PY - 2021/2/17

Y1 - 2021/2/17

N2 - Remnants of shooting stars are preserved in form of cosmic spherules in ice and sediments. The extraterrestrial material is heated and melted upon atmospheric entry and is collected at the Earth's surface as cosmic spherules. A fraction of cosmic spherules (I-type cosmic spherules) sources from extraterrestrial Fe,Ni metal. These metal particles melt and become oxidized in the atmosphere. The oxygen in the resulting oxides (magnetite, wüstite) sources entirely from the atmosphere. Here, we demonstrate that I-type cosmic spherules can be used to reconstruct the triple oxygen isotope anomaly of the past atmosphere, which provides information on the gross primary productivity and/or paleo-CO2 levels. We present a calibration of the proxy using Antarctic cosmic spherules. We further introduce Δ′56Fe and demonstrate that triple iron isotopes can be used to obtain information about the underlying fractionation mechanism (e.g., kinetic vs. equilibrium fractionation).

AB - Remnants of shooting stars are preserved in form of cosmic spherules in ice and sediments. The extraterrestrial material is heated and melted upon atmospheric entry and is collected at the Earth's surface as cosmic spherules. A fraction of cosmic spherules (I-type cosmic spherules) sources from extraterrestrial Fe,Ni metal. These metal particles melt and become oxidized in the atmosphere. The oxygen in the resulting oxides (magnetite, wüstite) sources entirely from the atmosphere. Here, we demonstrate that I-type cosmic spherules can be used to reconstruct the triple oxygen isotope anomaly of the past atmosphere, which provides information on the gross primary productivity and/or paleo-CO2 levels. We present a calibration of the proxy using Antarctic cosmic spherules. We further introduce Δ′56Fe and demonstrate that triple iron isotopes can be used to obtain information about the underlying fractionation mechanism (e.g., kinetic vs. equilibrium fractionation).

KW - atmosphere

KW - cosmic

KW - isotopes

KW - oxygen

KW - spherules

UR - http://www.scopus.com/inward/record.url?scp=85103222977&partnerID=8YFLogxK

U2 - 10.1029/2020PA004159

DO - 10.1029/2020PA004159

M3 - Article

AN - SCOPUS:85103222977

VL - 36

JO - Paleoceanography and Paleoclimatology

JF - Paleoceanography and Paleoclimatology

SN - 2572-4517

IS - 3

M1 - e2020PA004159

ER -

Von denselben Autoren