Supplement to: Clayton, Robin E; Nederbragt, Alexandra J; Malinovsky, Dmitry; Andersson, Per S; Thurow, Juergen W (2007): Data report: iron isotope geochemistry of mid-Cretaceous organic-rich sediments at Demerara Rise (ODP Leg 207). In: Mosher, DC; Erbacher, J; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 207, 1-14, https://doi.org/10.2973/odp.proc.sr.207.109.2007