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Browsing by Author "Apraiz, A."
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Aportaciones a la geoquímica de rocas básicas cámbricas de la Antiforma de Monesterio (zona de Ossa-Morena)
Etxebarria, M.; Apraiz, A.; Carracedo Sánchez, Manuel (Sociedad Geológica de España, 2003)Basic volcanic and subvolcanic rocks have been geochemically studied to provide new evidence for the location of the axis of the Cambrian rift of the Ossa-Morena Zone. The results of the analysis of various subvolcanic ... -
Características estructurales asociadas al núcleo metamórfico de Lora del Río (Zona de Ossa-Morena)
Apraiz, A. (Sociedad Geológica de España, 1996)The Lora del Rio metamorphic core is located in the easternmost part of the Monesterio Antiform. A detailled structural and metamorphic study combined with cartographic data enable the characterization of 3 different ... -
El granito Precambrico deValsequillo (zona de Ossa-Morena, Macizo Iberico, España)
Bandrés, A.; Eguiluz, Luis; Apraiz, A. (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 del sector de Zafra: implicaciones en la subdivisión de unidades Cámbricas de la Zona de Ossa Morena (ZOM)
Eguiluz, Luis; Apraiz, A.; Martínez Torres, Luis M.; Palacios Medrano, Teodoro (Sociedad Geológica de España, 1997)Detailed geological mapping of the Zafra Sector (central Ossa Morena Zone, ZOM) has shown thé occurrence of a minor synclinal-anticlinal coupled structure compatible with the major structure of the Monesterio Antiform. It ... -
Estudio preliminar de los ostrácodos del yacimiento del Eoceno inferior de Loza (Álava, Cuenca Vasco-Cantábrica)
Suárez Bilbao, Aitziber; Suárez Hernando, Oier; Martínez García, Blanca; Zuluaga, María Cruz; Apraiz, A.; Baceta, Juan Ignacio; Murelaga, Xabier (Sociedad Geológica de España, 2014)In this paper the preliminary study of ostracods preserved in a distinct fossiliferous level within the poorly-known lower Eocene lacustrine-palustrine succession of Loza (Álava, Basque-Cantabrian Basin) is developed. ... -
High temperature - Low pressure tectonites from the Boa Fé Fault Zone (Évora Massif, Ossa Morena Zone, Portugal): Evidences for transtensional tectonics
Chichorro, Martim; Pereira, M. F.; Apraiz, A.; Silva, J. B. (Sociedad Geológica de España, 2003)Partial melting in the Évora Massif (Ossa-Morena Zone) occurred contemporaneously with non-coaxial deformation in a transcurrent regime. An example of this fact has been taken from studied partially melted biotite-sil ... -
Preliminary thermobarometric data from the Ouguela and Contenda-Barragem do Caia Units: Coimbra-Cordoba shear zone (Northeast Alentejo, Portugal)
Francisco Pereira, M.; Apraiz, A. (Sociedad Geológica de España, 2002)The Coimbra-Cordoba shear zone comprises different tectonic units with a complex metamorphic evolution. In the Northeast Alentejo (Portugal) some of these units contain mineral parageneses of high-temperature/ intermedia ... -
Preliminary thermobarometric data from the Ouguela and Contenda-Barragem do Caia Units: Coimbra-Cordoba shear zone (Northeast Alentejo, Portugal)
Francisco Pereira, M.; Apraiz, A. (Sociedad Geológica de España, 2003)The Coimbra-Cordoba shear zone comprises different tectonic units with a complex metamorphic evolution. In the Northeast Alentejo (Portugal) some of these units contain mineral parageneses of high-temperature/ intermedia ... -
Significado geodinàmico de las vergencias al norte en el NE de la Provincia de Sevilla (Zona de Ossa-Morena)
Apraiz, A.; Eguiluz, Luis (Sociedad Geológica de España, 1996)The area s tu d ie d is characterized by the occurrence o f structures w h ich associate a N te c to n ic vergence. These are the results of deformational features varying from localized mylonite generation in highly ...