Uranium-series age, isotope concentrations and ratios from Lophelia pertusa fragments from the gravity core sample GeoB20531-1 collected during the M122 ANNA cruise off Namibia. *Measured 234U/238U activity ratios (δ234Um) are presented as deviation permil (‰) from the equilibrium value. Decay corrected 234U/238U activity ratios (δ234Ui) are calculated from the given ages and with λ234U: 2.8263 x 10-6 yr-1. Agecor Corrected ages, according to Frank et al. (2004) and Wefing et al., (2017). n.d.: not determinable because lower than the analytical blank (<0.003 ng/g). For GeoB20572-4 and 20579-1, two L. pertusa fragments were collected from the bulk sample for dating: ' sample 1; '' sample 2.

• Measured 234U/238U activity ratios (δ234Um) are presented as deviation permil (‰) from the equilibrium value. Decay corrected 234U/238U activity ratios (δ234Ui) are calculated from the given ages and with λ234U: 2.8263 x 10-6 yr-1.** AR: Aggradation rate. AR is negligible within the uncertainties for all data except for the values at 75 cm and 589 cm core depth.Agecor Corrected ages, according to Frank et al. (2004) and Wefing et al., (2017). Ka BP refers to 1950.n.d.: not determinable because lower than the analytical blank (<0.003 ng/g). Coral species: Lophelia pertusa is synonym of the recently introduced species name Desmophyllum pertusum