Giulia Molina^1,2, Leopoldo D Pena³, Gerhard Schmiedl^4,5, Francisco J. Jiménez-Espejo⁶, Gerhard Schmiedl⁴, Nils Andersen⁷, Henning Kuhnert⁸, Teresa Rodrigues^1,2 and Antje H L Voelker^1,2, (1)Centro de Ciencias do Mar (CCMAR/ CIMAR LA), Universidade do Algarve, Faro, Portugal, (2)Instituto Português do Mar e da Atmosfera, Geologia e Georecursos Marinhos, Lisboa, Portugal, (3)Universitat de Barcelona. Facultat de Ciencies de la Terra, Dinàmica de la Terra i de l'Oceà, Barcelona, Spain, (4)Institute for Geology, University of Hamburg, Hamburg, Germany, (5)Center for Earth System Research and Sustainability, University of Hamburg, Hamburg, Germany, (6)IACT (CSIC), Granada, Spain, (7)University of Kiel, Leibniz Laboratory for Radiometric Dating and Stable Isotope Research, Kiel, Germany, (8)Department of Geosciences & MARUM University of Bremen, Bremen, Germany