Articles | Volume 12, issue 18
Research article
18 Sep 2015
Research article |  | 18 Sep 2015

A comparison of benthic foraminiferal Mn / Ca and sedimentary Mn / Al as proxies of relative bottom-water oxygenation in the low-latitude NE Atlantic upwelling system

C. L. McKay, J. Groeneveld, H. L. Filipsson, D. Gallego-Torres, M. J. Whitehouse, T. Toyofuku, and O.E. Romero


Interactive discussion

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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish as is (27 Aug 2015) by Lisa Levin
AR by Claire McKay on behalf of the Authors (01 Sep 2015)
Short summary
We highlight the proxy potential of foraminiferal Mn/Ca determined by secondary ion mass spectrometry and flow-through inductively coupled plasma optical emission spectroscopy for recording changes in bottom-water oxygen conditions. Comparisons with Mn sediment bulk measurements from the same sediment core largely agree with the results. High foraminiferal Mn/Ca occurs in samples from times of high productivity export and corresponds with the benthic foraminiferal faunal composition.
Final-revised paper