Facies Keuper redepositadas en las Zonas Externas de la Cordillera Béticacriterios de reconocimiento
ISSN: 1576-5172
Argitalpen urtea: 2001
Zenbakien izenburua: XIV Congreso Nacional de Sedimentología, IV Congreso del Cretácico de España
Zenbakia: 3
Orrialdeak: 103-106
Mota: Artikulua
Beste argitalpen batzuk: Geotemas (Madrid)
Laburpena
In the western External Betic Zone, two different Keuper facies can be differentiated, an Upper Triassic one, and other with a variable chaotic and heterogeneous appearance intercalated between more recent stratigraphic units. Different authors have proposed a tectonic origin for this Keuperlike facies of fragmented and mixed rocks. However, we have established a set of stratigraphic, micropaleontological, lithologic, and sedimentary criteria which permit to verify its sedimentary origin and its different age of deposition during the Cretaceous and the Tertiary. So we concluded that they are reworked deposits coming from areas of important Keuper masses. In outcrops of submarine diapiric extrusion origin a set of facies can be ordered, from proximal to distal of the diapiric conduct as: overhang, salt glacier (with different subfacies), and reworked sediments (debris-flows, mud-flows, etc.)