Reconstrucción ambiental mediante el empleo de técnicas de análisis factorial sobre nanofósiles calcáreos de la cuenca neógena de San Miguel-Torremendo (Cordillera Bética Oriental)
- Carlos Lancis 1
- J.A. Flores 2
- F. Sierro
- Antonio Estévez 1
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1
Universitat d'Alacant
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2
Universidad de Salamanca
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ISSN: 1576-5172
Año de publicación: 2004
Título del ejemplar: VII Congreso Geológico de España
Número: 7
Páginas: 263-268
Tipo: Artículo
Otras publicaciones en: Geotemas (Madrid)
Resumen
During the Messinian, an enormous volume of gypsum and other salts were deposited in the Mediterranean basin known as "the Messinian salinity crisis" and for several authors related with the desiccation of this sea after the closure of the Northbetic and Rifean corridors. In the San Miguel-Torremendo basin are described saline pulses related with the above mentioned "crisis" during the late Messinian. Here, we show the evolution of several (paleo)environmental parameters, using quantitative analyses in the calcareous nannofossils assemblages. Our data suggest a cyclical, probably orbital, oscillation of open ocean and restricted periods.