Articles | Volume 12, issue 4
https://doi.org/10.5194/bg-12-1169-2015
https://doi.org/10.5194/bg-12-1169-2015
Reviews and syntheses
 | 
24 Feb 2015
Reviews and syntheses |  | 24 Feb 2015

Records of past mid-depth ventilation: Cretaceous ocean anoxic event 2 vs. Recent oxygen minimum zones

J. Schönfeld, W. Kuhnt, Z. Erdem, S. Flögel, N. Glock, M. Aquit, M. Frank, and A. Holbourn

Download

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Joachim Schönfeld on behalf of the Authors (10 Dec 2014)  Author's response
ED: Publish subject to minor revisions (Editor review) (18 Jan 2015) by Christophe Rabouille
AR by Svenja Lange on behalf of the Authors (28 Jan 2015)  Author's response    Manuscript
ED: Publish subject to technical corrections (29 Jan 2015) by Christophe Rabouille
AR by Joachim Schönfeld on behalf of the Authors (30 Jan 2015)  Author's response    Manuscript
Download
Short summary
Today’s oceans show distinct mid-depth oxygen minima while whole oceanic basins became transiently anoxic in the Mesozoic. To constrain past bottom-water oxygenation, we compared sediments from the Peruvian OMZ with the Cenomanian OAE 2 from Morocco. Corg accumulation rates in laminated OAE 2 sections match Holocene rates off Peru. Laminated deposits are found at oxygen levels of < 7µmol kg-1; crab burrows appear at 10µmol kg-1 today, both defining threshold values for palaeoreconstructions.
Altmetrics
Final-revised paper
Preprint