SP Fig. 3. LA-ICP-MS U–Pb dating of Carboniferous ash layers in the Cantabrian Zone (N Spain): stratigraphic implications

SP Fig. 3. Synthetic stratigraphic section of the Caleras, Generalas, San Antonio, Sotón and Entrerregueras stratigraphic packages, reconstructed using stratigraphic information provided by Hunosa, showing the location of fusuline samples studied by Van Ginkel (1973) (white colour circles), Barba (1983) (grey colour circles) and in this study (black colour circles). Local names of mined coal seams and reference limestone, sandstone and conglomerate stratigraphic levels are also indicated. See Fig. 5 for index and a key of symbols.