Rodríguez, R. M.Díez Montes, AlejandroLeyva, F.Matas, J.Almarza, J.Donaire, M.2014-11-072014-11-072002http://hdl.handle.net/10272/9156The levels of black slates that appear through the whole series of volcanic materials, have been revealed as a high-priority objective when carrying out studies detailed in the IPB, since they are constituted as a good paleontological resource for the dating of the volcanic materials in this area, besides a good tool when establishing a correlation and precise biostratigraphy of the whole IPB. The sequence basic litostratigraphyc, inside the Ribera of Jarama, they provide a continuous series, that which has allowed us to date with certainty the duration of the volcanic activity inside this areaspaAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Iberian Pyrite BeltSouth Portuguese ZoneVolcanismBlack shalesPalynostratigraphyMiosporesjournal articleopen access