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handle: 10261/5911
[ES] Los materiales campanenses y maastrichtenses en la Sierra Aixorta, muestran una alternancia de calizas y margocalizas blancas y amarillentas, con algunas intercalaciones de «capas rojas». Se observan algunos niveles de calcarenitas turbidíticas, así como niveles de slumps y ruditas intraformacionales, intercalados en la serie. Se estudian los materiales de la misma edad en series próximas del Prebético externo con el fin de deducir el significado paleogeográfico. Se interpretan estos materiales como el depósito en una pendiente submarina, adyacente a la plataforma externa, a pocos centenares de metros de profundidad. El limite entre el Cretácico y Terciario en estos cortes de Sierra Aixorta viene marcado por un hard-ground, con importante bioturbación y con desarrollo de estromatolitos pelágicos.
[EN] The Campanian and Maastrichtian materials of Sierra Aixorta consist of an alternance of white and yellow limestones and marly limestones with episodes of «couches rouges» facies. Some interbeds of turbiditic calcarenites and levels with slumping phenomens can be observed. Same age materials of External Prebetic sedes are considered as well in order to stablish the palaeogeographic interpretation of the former. The sedimentation supposedly took place in a few hundreds meters deep submarine slope related with the external platform. The Cretaceous-Tertiary limit in Sierra Aixorta is recorded by a hard-ground with strong biodisturbance and pelagic stromatolithes.
Proyecto patrocinado por la C.A.C.Y.T., que ha cubierto los gastos de campo de este trabajo dentro del proyecto «El Mesozoico de las Cordilleras Béticas », desarrollado por el Departamento de Investigaciones Geológicas C.S.I.C. de Granada.
Peer reviewed
Alicante, Turbiditas, Análisis paleogeográfico, Senoniense Superior
Alicante, Turbiditas, Análisis paleogeográfico, Senoniense Superior
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