Bromine counts from XRF scanning as an estimate of the marine organic carbon content of sediment cores

Ziegler, Martin, Jilbert, Tom, de Lange, Gert J., Lourens, Lucas J. and Reichart, Gert-Jan 2008. Bromine counts from XRF scanning as an estimate of the marine organic carbon content of sediment cores. Geochemistry Geophysics Geosystems 9 (5) 10.1029/2007GC001932

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Abstract

XRF sediment core scanning technology is increasingly used to quantify sediment composition. The overall good correlation between biophilic halogen bromine (Br) and sedimentary total organic carbon (TOC) potentially allows the fast estimation of down core TOC profiles by XRF scanning. In order to test this approach we present data from the Arabian Sea and a Mediterranean brine basin, comparing XRF core scanning Br data with discrete sample TOC analyses. Overall, Br counts and TOC show a clear correlation, except when stable carbon isotope and C/N data indicate intervals characterized by enhanced input of terrestrial organic matter. Hence, solid phase Br is exclusively associated with marine organic matter (MOC) and can be used as a direct estimate of this parameter after a calibration is established. High pore water Br in the brine core steepens the Br/TOC correlation but after salt correction shows a nearly identical gradient to that of the Arabian Sea core

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	Q Science > QE Geology
Uncontrolled Keywords:	X-ray fluorescence ; XRF core scanner ; sediment chemistry ; bromine ; sedimentary organic carbon
Additional Information:	Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/1525-2027/ (accessed 20/02/2014).
Publisher:	AGU
ISSN:	1525-2027
Date of First Compliant Deposit:	30 March 2016
Last Modified:	10 May 2023 17:35
URI:	https://orca.cardiff.ac.uk/id/eprint/9665

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