Quantifying the buffering of oceanic oxygen isotopes at ancient midocean ridges

Kanzaki, Yoshiki

doi:https://doi.org/10.5194/se-11-1475-2020

Articles | Volume 11, issue 4

https://doi.org/10.5194/se-11-1475-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/se-11-1475-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 4

Research article

|

11 Aug 2020

Research article |

| 11 Aug 2020

Quantifying the buffering of oceanic oxygen isotopes at ancient midocean ridges

Yoshiki Kanzaki

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Final revised paper (published on 11 Aug 2020)
Supplement to the final revised paper
Preprint (discussion started on 02 Jan 2020)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

- Printer-friendly version

- Supplement

RC1: 'Comments to author', Benjamin Johnson, 14 Mar 2020
- AC1: 'Response to Referee #1', Yoshiki Kanzaki, 10 Jun 2020
RC2: 'Comments for the author', Itay Halevy, 16 Apr 2020
- AC2: 'Response to Referee #2', Yoshiki Kanzaki, 10 Jun 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Yoshiki Kanzaki on behalf of the Authors (10 Jun 2020) Author's response Manuscript

ED: Publish as is (28 Jun 2020) by Patrice Rey

ED: Publish as is (29 Jun 2020) by Joachim Gottsmann (Executive editor)

AR by Yoshiki Kanzaki on behalf of the Authors (30 Jun 2020) Author's response Manuscript

Short summary

This study evaluates the buffering of seawater oxygen isotopes at midocean ridges, using a process-based model of hydrothermal circulation and reactive transport of oxygen isotopes. The buffering intensity shown by the model is significantly weaker than previously assumed. Oxygen isotopes of oceanic crust are consistently relatively insensitive to seawater isotopic composition, which explains the ancient oceanic crust without invoking a constant seawater oxygen–isotopic composition through time.