Thesis Collection
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Browsing by Author "Dunning, G. R."
Now showing items 1-5 of 5
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Edad U-Pb en monacitas y rútilos de los paragneises de la Unidad de Agualada (Complejo de Ordenes, NW del Macizo Ibérico)
(Sociedad Geológica de España, 2002)The Agualada Unit is a small (3x5 km) tectonic slice of the lowermost allochthon of the Órdenes Complex. It is mainly formed by orthogneisses, migmatitic paragneisses and numerous mafic lenses. The nature of the lenses ... -
Evolución estructural de la zona de cizalla extensional de Berzosa-Riaza, sector de Somosierra, Sistema Central Español
(Sociedad Geológica de España, 1996)In this paper, a new structural analysis of the Somosierra sector of the Spanish Central System is presented. Two main tectonothermal events are recorded: D1 is compressional and related to the variscan collision that ... -
Evolución microestructural y metamórfica de la zona de cizalla extensional de Berzosa-Riaza: la superposición de asociaciones minerales de Baja-P/Alta-T sobre una secuencia Barroviense
(Sociedad Geológica de España, 1996)A new integrated analysis of microstructural, metamorphic and U-Pb monazite age data, indicates that the Berzosa-Riaza shear zone (BRSZ) is a major D2 extensional structure associated with crustal-scale ductile extensional ... -
Geocronología U/Pb del volcanismo ácido y granitoides de la Faja Pirítica Ibérica (Zona Surportuguesa)
(Sociedad Geológica de España, 2002)Three samples have been analyzed, two of them belong to the volcanic ones from the IPB and a third to the rocks plutonics of the BSN. The age belonging to the granitoid of Campofrio is of 354,4 +5/-4 m.y. The ages obtained ... -
La extensión Sin~Colisional en la Zona Centro Ibérica: restricciones temporales impuestas por edades U-Pb en monacitas del sector de Somosierra, Sistema Central Español
(Sociedad Geológica de España, 1996)A new integrated analysis of microstructural, metamorphic and U-Pb monazite age data, indicates that the Berzosa-Riaza shear zone (BRSZ) is a major D2 extensional structure associated with crustal-scale ductile extensional ...
