%0 Journal Article
%A Santisteban Navarro, Juan Ignacio
%A Dabrio González, Cristino José
%A Mas Mayoral, José Ramón
%T Depósitos de ápice de abanico (Terciario de la Cuenca del Tajo,Madrid): sedimentología y controles sedimentarios
%D 1999
%@ 0213-683X
%U https://hdl.handle.net/20.500.14352/56807
%X The topmost alluvial deposits that outcrop adjacent to Central System igneous rocks are arranged in twounits with particular internal architecture. The lower unit consists of ten bodies laterally disposed andbounded by concave erosional surfaces. These bodies record both viscous and f1uidized flows correspondingto channelized debris-flows, torrential flows and single channel fluvial deposits. This unit is interpreted asentrenched deposits at the head of the fan at the outlet of the catchment area. The c1ast-supported graveland boulder upper unit is arranged in near tabular bodies with erosional bases and internal smaller, singlechannels and records the final stages of fan development when apex trench was buried and sheet-flowsdeveloped. Lateral migration of bodies in both units record a stable tectonic setting and a slowly-rising ornear-equilibrium base-level, interpreted as the final stages of fan development in a almost-filled basin.
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