Supplement to: Feng, Dong; Lin, Zhijia; Bian, Y; Chen, Duofu; Peckmann, Jörn; Bohrmann, Gerhard; Roberts, Harry H (2013): Rare earth elements of seep carbonates: Indication for redox variations and microbiological processes at modern seep sites. Journal of Asian Earth Sciences, 65, 27-33, https://doi.org/10.1016/j.jseaes.2012.09.002