Resumen de Thermal history of the Prebetic platform: constraints from apatite fission track data
Luis C. Barbero González, Ángel Carlos López Garrido, Manuel García Hernández, S. Quesada
Preliminary apatite fission track data from the Prebetic continental margin show that sediment source for the Aptian-Albian sandstones were likely the Triass ic sandstones and/or the basement rocks o f the Central Iberian zone that by Cretaceous times were already cropping out. Results from modeling show a heating-cooling episode that could be related to the Tethys ocean opening and correspond to a Triassic rifting followed by a Jurassic extensional stage controlled by thermal subsidence. A second cooling-heating episode is recognized by modeling; this could be related to the opening o f the Atlantic ocean during Portlandian-Neocomian times.
Final inversion o f the Cretaceous basin is represented by a cooling stage, which began around 20 Ma ago, which is the age o f the extensional collapse o f the internal zones o f the Betic orogen.
