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Alluvial fan apex deposits (Tertiary of Tajo Basin, Madrid, Spain): Sedimentology and sedimentary controls

dc.contributor.authorSantisteban, Juan Ignacio
dc.contributor.authorDabrio, Cristino José
dc.contributor.authorMas, Ramón
dc.contributor.authorMediavilla López, Rosa
dc.description.abstractThe topmost alluvial deposits that outcrop adjacent to Central System igneous rocks are arranged in two units with particular internal architecture. The lower unit consists of ten bodies laterally disposed and bounded by concave erosiona! surfaces. These bodies record both viscous and fluidized flows corresponding to channelized debris-flows, torrential flows and single channel fluvial deposits. This unit is interpreted as entrenched deposits at the head of the fan at the outlet of the catchment area. The clast-supported gravel and boulder upper unit is arranged in near tabular bodies with erosional bases and internal smaller, single channels and records the final stages of fan development when apex trench was buried and sheet-flows developed. Lateral migration of bodies in both units record a stable tectonic setting and a slowly-rising or near-equilibrium base-level, interpreted as the final stages of fan development in a almost-filled basinen_US
dc.publisherSociedad Geológica de Españaen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherAlluvial fan apexen_US
dc.subject.otherFluidized and viscous flowsen_US
dc.subject.otherBoulder faciesen_US
dc.subject.otherStable tectonic settingen_US
dc.titleDepósitos de ápice de abanico (Terciario de la Cuenca del Tajo, Madrid): sedimentología y controles sedimentariosen_US
dc.titleAlluvial fan apex deposits (Tertiary of Tajo Basin, Madrid, Spain): Sedimentology and sedimentary controlseng

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Atribución-NoComercial-SinDerivadas 3.0 España
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