The geologic history of seawater oxygen isotopes from marine iron oxides

Nir Galili; Aldo Shemesh; Ruth Yam; Irena Brailovsky; Michal Sela-Adler; Elaine M. Schuster; Christopher Collom; Andrey Bekker; Noah Planavsky; Francis A. Macdonald; Alain Préat; Maxim Rudmin; Wieslaw Trela; Ulf Sturesson; Jeffrey M. Heikoop; Marcos Aurell; Javier Ramajo; Itay Halevy

doi:10.1126/science.aaw9247

The geologic history of seawater oxygen isotopes from marine iron oxides

Nir Galili, Aldo Shemesh, Ruth Yam, Irena Brailovsky, Michal Sela-Adler, Elaine M. Schuster, Christopher Collom, Andrey Bekker, Noah Planavsky, Francis A. Macdonald, Alain Préat, Maxim Rudmin, Wieslaw Trela, Ulf Sturesson, Jeffrey M. Heikoop, Marcos Aurell, Javier Ramajo, Itay Halevy

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

86 Scopus citations

Abstract

The oxygen isotope composition (d¹⁸O) of marine sedimentary rocks has increased by 10 to 15 per mil since Archean time. Interpretation of this trend is hindered by the dual control of temperature and fluid d¹⁸O on the rocks' isotopic composition. A new d¹⁸O record in marine iron oxides covering the past ~2000 million years shows a similar secular rise. Iron oxide precipitation experiments reveal a weakly temperature-dependent iron oxide-water oxygen isotope fractionation, suggesting that increasing seawater d¹⁸O over time was the primary cause of the long-term rise in d¹⁸O values of marine precipitates. The ¹⁸O enrichment may have been driven by an increase in terrestrial sediment cover, a change in the proportion of high- and low-temperature crustal alteration, or a combination of these and other factors.

Original language	English
Pages (from-to)	469-473
Number of pages	5
Journal	Science
Volume	365
Issue number	6452
DOIs	https://doi.org/10.1126/science.aaw9247
State	Published - 2 Aug 2019
Externally published	Yes

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General

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1126/science.aaw9247

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Galili, N., Shemesh, A., Yam, R., Brailovsky, I., Sela-Adler, M., Schuster, E. M., Collom, C., Bekker, A., Planavsky, N., Macdonald, F. A., Préat, A., Rudmin, M., Trela, W., Sturesson, U., Heikoop, J. M., Aurell, M., Ramajo, J., & Halevy, I. (2019). The geologic history of seawater oxygen isotopes from marine iron oxides. Science, 365(6452), 469-473. https://doi.org/10.1126/science.aaw9247

@article{5206077387bc46c9867972ec0bec425b,

title = "The geologic history of seawater oxygen isotopes from marine iron oxides",

abstract = "The oxygen isotope composition (d18O) of marine sedimentary rocks has increased by 10 to 15 per mil since Archean time. Interpretation of this trend is hindered by the dual control of temperature and fluid d18O on the rocks' isotopic composition. A new d18O record in marine iron oxides covering the past ~2000 million years shows a similar secular rise. Iron oxide precipitation experiments reveal a weakly temperature-dependent iron oxide-water oxygen isotope fractionation, suggesting that increasing seawater d18O over time was the primary cause of the long-term rise in d18O values of marine precipitates. The 18O enrichment may have been driven by an increase in terrestrial sediment cover, a change in the proportion of high- and low-temperature crustal alteration, or a combination of these and other factors.",

author = "Nir Galili and Aldo Shemesh and Ruth Yam and Irena Brailovsky and Michal Sela-Adler and Schuster, {Elaine M.} and Christopher Collom and Andrey Bekker and Noah Planavsky and Macdonald, {Francis A.} and Alain Pr{\'e}at and Maxim Rudmin and Wieslaw Trela and Ulf Sturesson and Heikoop, {Jeffrey M.} and Marcos Aurell and Javier Ramajo and Itay Halevy",

year = "2019",

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doi = "10.1126/science.aaw9247",

language = "English",

volume = "365",

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Galili, N, Shemesh, A, Yam, R, Brailovsky, I, Sela-Adler, M, Schuster, EM, Collom, C, Bekker, A, Planavsky, N, Macdonald, FA, Préat, A, Rudmin, M, Trela, W, Sturesson, U, Heikoop, JM, Aurell, M, Ramajo, J & Halevy, I 2019, 'The geologic history of seawater oxygen isotopes from marine iron oxides', Science, vol. 365, no. 6452, pp. 469-473. https://doi.org/10.1126/science.aaw9247

TY - JOUR

T1 - The geologic history of seawater oxygen isotopes from marine iron oxides

AU - Galili, Nir

AU - Shemesh, Aldo

AU - Yam, Ruth

AU - Brailovsky, Irena

AU - Sela-Adler, Michal

AU - Schuster, Elaine M.

AU - Collom, Christopher

AU - Bekker, Andrey

AU - Planavsky, Noah

AU - Macdonald, Francis A.

AU - Préat, Alain

AU - Rudmin, Maxim

AU - Trela, Wieslaw

AU - Sturesson, Ulf

AU - Heikoop, Jeffrey M.

AU - Aurell, Marcos

AU - Ramajo, Javier

AU - Halevy, Itay

PY - 2019/8/2

Y1 - 2019/8/2

N2 - The oxygen isotope composition (d18O) of marine sedimentary rocks has increased by 10 to 15 per mil since Archean time. Interpretation of this trend is hindered by the dual control of temperature and fluid d18O on the rocks' isotopic composition. A new d18O record in marine iron oxides covering the past ~2000 million years shows a similar secular rise. Iron oxide precipitation experiments reveal a weakly temperature-dependent iron oxide-water oxygen isotope fractionation, suggesting that increasing seawater d18O over time was the primary cause of the long-term rise in d18O values of marine precipitates. The 18O enrichment may have been driven by an increase in terrestrial sediment cover, a change in the proportion of high- and low-temperature crustal alteration, or a combination of these and other factors.

AB - The oxygen isotope composition (d18O) of marine sedimentary rocks has increased by 10 to 15 per mil since Archean time. Interpretation of this trend is hindered by the dual control of temperature and fluid d18O on the rocks' isotopic composition. A new d18O record in marine iron oxides covering the past ~2000 million years shows a similar secular rise. Iron oxide precipitation experiments reveal a weakly temperature-dependent iron oxide-water oxygen isotope fractionation, suggesting that increasing seawater d18O over time was the primary cause of the long-term rise in d18O values of marine precipitates. The 18O enrichment may have been driven by an increase in terrestrial sediment cover, a change in the proportion of high- and low-temperature crustal alteration, or a combination of these and other factors.

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U2 - 10.1126/science.aaw9247

DO - 10.1126/science.aaw9247

M3 - Article

C2 - 31371609

AN - SCOPUS:85071041080

SN - 0036-8075

VL - 365

SP - 469

EP - 473

JO - Science

JF - Science

IS - 6452

ER -

The geologic history of seawater oxygen isotopes from marine iron oxides

Abstract

ASJC Scopus subject areas

UN SDGs

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