Cretaceous oceanic anoxic events prolonged by phosphorus cycle feedbacks

Beil, Sebastian; Kuhnt, Wolfgang; Holbourn, Ann; Scholz, Florian; Oxmann, Julian; Wallmann, Klaus; Lorenzen, Janne; Aquit, Mohamed; Chellai, El Hassane

doi:https://doi.org/10.5194/cp-16-757-2020

Articles | Volume 16, issue 2

https://doi.org/10.5194/cp-16-757-2020

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

Special issue:

Ocean deoxygenation: drivers and consequences – past, present...

https://doi.org/10.5194/cp-16-757-2020

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

Articles | Volume 16, issue 2

Research article

|

29 Apr 2020

Research article |

| 29 Apr 2020

Cretaceous oceanic anoxic events prolonged by phosphorus cycle feedbacks

Sebastian Beil, Wolfgang Kuhnt, Ann Holbourn, Florian Scholz, Julian Oxmann, Klaus Wallmann, Janne Lorenzen, Mohamed Aquit, and El Hassane Chellai

Download

Final revised paper (published on 29 Apr 2020)
Supplement to the final revised paper
Preprint (discussion started on 08 Oct 2019)
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: 'Cretaceous Oceanic Anoxic Events prolonged by phosphorus cycle feedbacks', Hugh Jenkyns, 17 Oct 2019
- AC1: 'Reply to Hugh Jenkyns', Sebastian Beil, 01 Jan 2020
SC1: 'Uninvited review of Beil et al., submitted to Climate of the Past Discussions', Christian März, 24 Oct 2019
- AC2: 'Reply to Christian Maerz', Sebastian Beil, 01 Jan 2020
RC2: 'cp-2019-118 invited review', Matthew Clarkson, 13 Nov 2019
- AC3: 'Reply to Matthew Clarkson', Sebastian Beil, 01 Jan 2020

Peer-review completion

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

ED: Publish subject to minor revisions (review by editor) (17 Jan 2020) by Babette Hoogakker

AR by Sebastian Beil on behalf of the Authors (27 Jan 2020) Author's response Manuscript

ED: Publish subject to technical corrections (12 Feb 2020) by Babette Hoogakker

ED: Publish subject to technical corrections (14 Feb 2020) by Laurie Menviel (Co-editor-in-chief)

AR by Sebastian Beil on behalf of the Authors (16 Feb 2020) Manuscript

Short summary

Comparison of Cretaceous OAE1a and OAE2 in two drill cores with unusually high sedimentation rates shows that long-lasting negative δ¹³C excursions precede the positive δ¹³C excursions and that the evolution of the marine δ¹³C positive excursions is similar during both OAEs, although the durations of individual phases differ substantially. Phosphorus speciation data across OAE2 and the Mid-Cenomanian Event suggest a positive feedback loop, enhancing marine productivity during OAEs.