Sedimentación lacustre durante el Cretàcico en la Cordillera Ibérica, España
1991; University of Barcelona; Volume: 26; Issue: 1 Linguagem: Espanhol
ISSN
2173-6537
AutoresA. Alonso, Nieves Meléndez, José Ramón Mas Mayoral,
Tópico(s)Mediterranean and Iberian flora and fauna
Resumocon una fase distensiva; se crean cuencas relativamente pequehas, pero muy subsidentes, con predomini0 de sedirnentacion ' Lake deposits were important in the Iberian Ranges during continental. El segundo periodo corresponde a la etapa regresiva two episodes of the Cretaceous time: from Berriasian to Aptian finicretacica, relacionada con una fase compresiva; se crean (Lower Cretaceous) and during the Maastrichtian (Uppermost cubetas continentales aisladas. Cretaceous). The first one was related to the fracturation stage of an extensional phase, resulting in the formation of medium size Durante el Cretacico inferior se crearon en el sector de la (althoughvery subsident) continental basins (Iberian s,s,,Maestrazgo Cordillera Iberica tres cuencas o cubetas cuyas historias evolutiand Cameros), The second period corresponds with the Late vas, aunque paralelas, muestran divergencias debido a diferenCretaceousregressive stage, and was ass0ciate.d with acompresional cia~ en la situaciOn geOgrafica Tetis, ya phase. As a result, several small and isolated basins appeared, mente abierto y a variaciones en la tasa de subsidencia. Estas and were filled with continental deposits. cuencas fueron; el surco suroriental, o Cuenca Iberica s.s., la Cuenca del Maestrazgo y la Cuenca de Los Cameros. En este The present paper deals with the analysis of the lacustrine trabajo se analizan las facies lacustres que aparecen en la Cuenca facies in two of the three basins that diferenciated during the Iberica s.s. (la menes subsidente) y en la Cuenca de Las Cameros Cretaceous in the Iberian Ranges. The Cameros basin, which was (la mas subsidente), durante 10s dos periodos antes mencionados, the most subsident and occupied an inner position, and the Cretacico Inferior y Cretacico Terminal, Iberian basin s.s, that was the less subsident and open towards the Tetis.
Referência(s)