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Browsing by Subject "Iberian Massif"
Now showing items 1-20 of 28
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Acreción de Terrenos Precámbricos y Coberteras Posacrecionarias en el Macizo Ibérico (España y Portugal)
(Sociedad Geológica de España, 2002)The Iberian Massif shows the existence of four tectonostratigraphic terranes of Precambrian age which have been accreted in two different orogenic periods and sealed by overstepping successions which have been masked by ... -
Análisis estructural de los mármoles de la banda metamórfica de Aracena (Macizo Ibérico meridional). Implicaciones tectónicas regionales
Díaz Azpiroz, Manuel; Fernández Rodríguez, Carlos
(Sociedad Geológica de España, 2001)
The structural analysis of marbles from the Aracena metamorphic belt has proven to be very useful to deduce the structure and the tectonic evolution of the continental domain of this belt, which, in turn, is a key area in ... -
Aplicación de imágenes satelitarias a la caracterización del macizo de Valencia del Ventoso
(Sociedad Geológica de España, 1999)Valencia del Ventoso Massif (MW), (south Badajoz, Spain), is a late-hercynical inversely zonated pluton, composed by a wide range of lithologies, from ultramafic to granitic rocks. Landsat TM images has been digitally ... -
Aproximación al paleorelieve Tortoniense del margen ibérico meridional (depresión occidental del Guadalquivir)
Rodríguez Vidal, Joaquín (Sociedad Geológica de España, 1991)
During the Middle•Upper Tortonian, the southern edge of the Iberian Massif was affected by a marine transgression. So the planated topography (pre-Tertiary erosion surface). tilted to the south (1% - 3%), was cutting by ... -
Caracterización petrológica y geoquímica de los granitos metaluminosos tardíos del dominio continental de la banda metamorfica de Aracena (Macizo Ibérico meridional)
Díaz Azpiroz, Manuel; Castro Dorado, Antonio; Fernández Rodríguez, Carlos (Sociedad Geológica de España, 2001)
Several late leucogranite small plutons appear in the high grade zone of the continental domain (CD), in the Aracena metamorphic belt (AMB). These leucogranites cross-cut the structures due to the main tectono-metamorphic ... -
The Central Iberian arc: implications for the Iberian Massif
(Universidad de Huelva, 2011)Variscan folds and magnetic anomalies of the Central Iberian Zone (Iberian Massif) delineate an orocline similar in size to the Ibero- Armorican arc but of opposite sense of curvature. Its core is occupied by the ... -
Coeval interaction between magmas of contrasting composition (Late Carboniferous-Early Permian Santa Eulália-Monforte massif, Ossa-Morena Zone): field relationships and geochronological constraints
(Institut de Ciències de la Terra "Jaume Almera", 2017-12)The Santa Eulália-Monforte massif is a post-kinematic Late Carboniferous-Early Permian calc-alkaline composite massif (LC-EP) located in the Ossa-Morena Zone (OMZ, Portugal). This paper examines the field relationships ... -
Correlation of hercynian units of the Iberian massif and southeastern France
(Sociedad Geológica de España, 1996)The Olio de sapo anliform in the northwest Iberian Massif is made up of superposed allochthonous units of Paleozoic metasediments and Ordovician orthogneisses, similar to gneissic domes in the eastern Pyrenees and in the ... -
Edad de enfriamiento U/Pb en rútilos del Gneis de Chímparra (Cabo Ortegal, NO De España)
(Sociedad Geológica de España, 1996)The Chfmparra gneisses are characterized by a HP-HT (800°C, ISOO MPa) mylonitic fabric reequilibrated under amphibolite facies (600°C, 900 MPa). This fabric is formed by Qtz+Plag+Bt+white mica + Grt+Ky. Rutiles are preserved ... -
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 ... -
El granito Precambrico deValsequillo (zona de Ossa-Morena, Macizo Iberico, España)
(Sociedad Geológica de España, 1999)The Valsequillo granite is situated in the Peraleda de Zaucejo antiform (Obejo-Valsequillo-Puebla de la Reina Domain) at the northern Ossa-Morena Zone. This antiform is defined by Armorican Quartzite and Devonian rocks. ... -
Estructura interna del batolito granítico de Nisa-Alburquerque
(2006)The Late Variscan Nisa-Alburquerque batholith (SW-Iberian Peninsula) is located close to the boundary between two major geologic domains of the Iberian Massif: the Central Iberian Zone and the Ossa-Morena Zone. This ... -
Estudio de la variación del grado de desorientación de subgranos en cuarcitas de la zona Este del Sistema Central y Macizos Paleozoicos de la Cordillera Ibérica
(Sociedad Geológica de España, 1990)The spatial variation of the geometric mean of intracrystalline extinction angle (GMA) demonstrates the reliability of the structural subdivisions previously established for the Central-East Iberian Massif and constitutes ... -
Evidencias metamórficas y estructurales de extensión tardiorogénica hercinica: el ejemplo del Domo Gneisico del Tormes (NO Salamanca)
(Sociedad Geológica de España, 1994)The tectonothermal Variscan evolution of the Tormes Gneiss Dome is controlled by a subhorizontal ductile shear zone of crustal scale and extensional characteristics, that induced a quick exhumation of the deep parts of the ... -
Granates en las rocas intrusivas calcoalcalinas ricas en K de la Unidad Pisuerga-Carrión (Zona Cantábrica, Norte de España)
(Sociedad Geológica de España, 2000)A small scale calcalkaline and late-orogenic intrusive assembly outcrops in the outermost part of the northern branch of Iberian Variscan Chain. Carnet is present as an accesory phase in the intermediate to acidic intrusive ... -
Graptolitos ordovicicos en el sinclinal de Rececende (Lugo, Zona Asturoccidental-leonesa). Implicaciones estratigrâficas
(Sociedad Geológica de España, 2017)El primer hallazgo de graptolitos ordovícicos en el sinclinal de Rececende (Dominio del Manto de Mondoñedo, NO de España) permite reinterpretar la sucesión estratigráfíca del área. La asociación de graptolitos incluye dos ... -
La estructura varisca de la Unidad del Pulo do Lobo (SO del Macizo Ibérico) en las transversales de Aroche y Rosal de la Frontera (Huelva)
(Universidad de Huelva, 2012)Se ha realizado un análisis estructural detallado en dos transversales de la Unidad del Pulo do Lobo (orógeno Varisco). Se confirma la secuencia litoestratigráfica previa (de muro a techo, Fms. Pulo do Lobo, Ribeira de ... -
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 ... -
Magmatismo Neoproterozoico calcoalcalino en el Antiforme del Narcea (N de España)
(Sociedad Geológica de España, 2004)4 sequence of acid to basic igneous rocks is exposed within Neoproterozoic sediments of the Narcea Antiform (N of the Iberian Variscan Belt). Volcanic and volcanoclastic rocks, classically known as 'porphyroids', are ... -
Modelización gravimétrica en el SW de la Península Ibérica
Sánchez Jiménez, N.; Bergamín, J. F.; Fernández Rodríguez, Carlos; Castro Dorado, Antonio (Sociedad Geológica de España, 1996)
A gravity research has been carried out in the southwestern part of the Iberian Massif to study the contact between the Ossa-Morena (OMZ) and Southportuguese zones (SPZ). The Bouguer anomaly map shows a relative gravity ...
