RT Journal Article
T1 Neoformaciones y reemplazamientos en depósitos palustres dela Unidad Intermedia (NE de la Cuenca de Madrid)
A1 Pérez Jiménez, José Luis
A1 Bustillo Revuelta, Manuel
A1 Alonso-Zarza, Ana María
AB The NE zone of the Madrid Basin contains palustrine deposits of the Miocene Intermediate Unit which have undergone silicification processes. These processes are conditioned by the type of palustrine deposit within they developed and occur at specific stratigraphic positions in the basin. In this paper we analyze three different sectors. In the Yesares section silicification produced quartz and took place in gypsum deposits which contain bioturbation channels that favoured silica fixation. In the Brihuega area silicification on bioturbated palustrine micrites also produced quartz. Both silicifications appear at the top of unit or sequence of the Intermediate Unit. In the Jadraque section the silicification of the micrites and dolomicrites was controlled by the presence of biosiliceous marls and sepiolite. This silicification was consequence of early diagenesis.
PB Sociedad Geológica de España.
SN 1576-5172
YR 2004
FD 2004
LK https://hdl.handle.net/20.500.14352/52522
UL https://hdl.handle.net/20.500.14352/52522
LA spa
NO Ministerio de Ciencia y Tecnología
DS Docta Complutense
RD 30 abr 2024