Mg∕Ca, Sr∕Ca and stable isotopes from the planktonic foraminifera <i>T. sacculifer</i>: testing a multi-proxy approach for inferring paleotemperature and paleosalinity

Dissard, Delphine; Reichart, Gert Jan; Menkes, Christophe; Mangeas, Morgan; Frickenhaus, Stephan; Bijma, Jelle

doi:https://doi.org/10.5194/bg-18-423-2021

Articles | Volume 18, issue 2

https://doi.org/10.5194/bg-18-423-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-18-423-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 2

Research article

|

19 Jan 2021

Research article |

| 19 Jan 2021

Mg∕Ca, Sr∕Ca and stable isotopes from the planktonic foraminifera T. sacculifer: testing a multi-proxy approach for inferring paleotemperature and paleosalinity

Delphine Dissard, Gert Jan Reichart, Christophe Menkes, Morgan Mangeas, Stephan Frickenhaus, and Jelle Bijma

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Final revised paper (published on 19 Jan 2021)
Preprint (discussion started on 18 Jun 2020)

Interactive discussion

Status: closed

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

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- Supplement

SC1: 'covariance of temperature and salinity', William Gray, 24 Jun 2020
- AC3: 'Answer to William Gray', Delphine Dissard, 21 Sep 2020
RC1: 'review : Mg/Ca, Sr/Ca AND STABLE ISOTOPE FROM PLANKTONIC FORAMINIFERA T. SACCULIFER: TESTING A MULTI-PROXY APPROACH FOR INFERRING PALEO-TEMPERATURE AND PALEO-SALINITY', Anonymous Referee #1, 25 Jun 2020
- AC1: 'Answer to reviewer 1', Delphine Dissard, 21 Sep 2020
RC2: 'Review', Anonymous Referee #2, 06 Jul 2020
- AC2: 'Answer to reviewer 2', Delphine Dissard, 21 Sep 2020

Peer-review completion

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

ED: Reconsider after major revisions (26 Sep 2020) by Markus Kienast

AR by Delphine Dissard on behalf of the Authors (29 Sep 2020) Author's response Manuscript

ED: Referee Nomination & Report Request started (04 Oct 2020) by Markus Kienast

RR by Anonymous Referee #2 (27 Oct 2020)

ED: Publish as is (01 Nov 2020) by Markus Kienast

Short summary

Results from a data set acquired from living foraminifera T. sacculifer collected from surface waters are presented, allowing us to establish a new Mg/Ca–Sr/Ca–temperature equation improving temperature reconstructions. When combining equations, δ¹⁸O_w can be reconstructed with a precision of ± 0.5 ‰, while successive reconstructions involving Mg/Ca and δ¹⁸O_c preclude salinity reconstruction with a precision better than ± 1.69. A new direct linear fit to reconstruct salinity could be established.