SP Fig. 1. LA-ICP-MS U–Pb dating of Carboniferous ash layers in the Cantabrian Zone (N Spain): stratigraphic implications Oscar Merino-Tomé Gabriel Gutiérrez-Alonso Elisa Villa Javier Fernández-Suárez Jaime Martín Llaneza Mandy Hofmann 10.6084/m9.figshare.4959890.v1 https://geolsoc.figshare.com/articles/journal_contribution/SP_Fig_1_LA-ICP-MS_U_Pb_dating_of_Carboniferous_ash_layers_in_the_Cantabrian_Zone_N_Spain_stratigraphic_implications/4959890 SP Fig. 1. Synthetic stratigraphic section of the Baleas and Alba Formation in the Las Baleas section with the location of samples BA-1 and BA-2. Conodont zones of the Baleas Formation and the base of the Alba Formation according García-Alcalde (1985). Conodont zones of the Alba Formation according Sánz-López & Blanco-Ferrera (2012). 2017-05-02 09:39:03 Fig SP Carboniferous ash layers LA-ICP-MS Alba Formation stratigraphic Las Baleas section BA -2. Conodont zones 1. Geology