• Análisis de la fracturación en la cuenca cenozoica de As Pontes (La Coruña) 

  Ferrús, B.; Santanach, P. (Sociedad Geológica de España, 1994)

  Minor fault analysis using Angelier and Mechler (1977) and Etchecopar et al. (1981) methods have been carried out in the Cenozoic As Pontes Basin (NW Spain).The paleostress tensors obtained are in agreement with the ...

  

• Zonas de cizalla dúctil en el Complejo Basal de Fuerteventura 

  Casillas Fernández, R.; Ahijado, A.; Hernández Pacheco, A. (Sociedad Geológica de España, 1994)

  The oldest plutonic rocks of the Basal Complex of the Fuerteventura Island In the area of Amanay are an alkaline ultramafic-carbonatite complex. In certain areas these rocks are affected by two ductile shear systems with ...

  

• Yesos de Calatayud: aplicación del estudio de facies y geoquímica de sulfatos al conocimiento de un sistema evaporítico 

  Ortí, Federico; Rosell, L.; Fallick, A. E.; Utrilla, R. (Sociedad Geológica de España, 1994)

  The study of depositional and diagenetic calcium-sulphate evaporites in the Calatayud Gypsum (Zaragoza prov., Spain), reveals the existence of a NW to SE elongated and relatively asymmetrical arrangement in this Miocene ...

  

• Variaciones laterales del "Nivel de Fuentes", Precámbrico-Cámbrico de la Zona Centro-Ibérica 

  Santamaría Casanovas, J.; Remacha Grau, Eduard (Sociedad Geológica de España, 1994)

  The "Nivel de Fuentes", in the Valdelacasa Allogroup (Precambrian-Cambrian), can be divided in five subunits. Each one of them is build-up by a basal megabreccia overlaid by a fine-grained turbidite wedge that tends to ...

  

• Un episódio volcánico pre-Cañadas en la Isla de Tenerife 

  Huertas, María José; Ancochea, Eumenio; Cantagrel, J. M.; Coello Bravo, J. J.; Fúster, J. M.; Ibarrola, E. (Sociedad Geológica de España, 1994)

  Based on new radiometric data, a Pre-Cañadas volcanic building of 3.5-3.0 Ma has been defined. This new building is mainly compared of basaltic rock cropping out in several gorges to the S of Cañadas Building, inside of ...

  

• Sobre la posición estratigráfica de las "Margas de Gor", Sierra de Baza, Cordillera Bética 

  Martín Pérez, J. A.; Viseras, César (Sociedad Geológica de España, 1994)

  The marly sediments traditionally known as "Cor Miocene" are located at the bottom of a very thick Middle Miocene detritic ensemble composed by clasts of alpujarride, malaguide and subbetic provenance. Locally they are ...

  

• Significado de los enclaves ricos en biotita en el plutón de Mora-Gálvez (Toledo) 

  Andonaegui, P. (Sociedad Geológica de España, 1994)

  Biotite-rich enclaves are conspicuos in the peraluminous granites. They had been interpreted as either melting restites or trapped xenoliths at different crustal levels. This work studies the biotite chemical composition ...

  

• Sedimentología, magnetoestratigrafía e isotopía de los depósitos fluviokársticos de la Cueva del Reguerillo (Patones, Madrid): interpretación paleoambiental 

  Torres, Trinidad de; Cobo, R.; Hoyos, M.; Mansilla, H.; Soler, Vicente (Sociedad Geológica de España, 1994)

  This paper deals with the palaeoenvironmental interpretation of the Reguerillo Cave fluviokarstic section through sedimentological, magnetostratigraphycal and isotope analysis studies. Three moisture decreasing sequences ...

  

• Tectónica distensiva y halocinesis en el margen SO de la cuenca Vasco- Cantábrica 

  Serrano, A.; Hernaiz Huerta, Pedro P.; Malagón, J.; Rodríguez Cañas, C. (Sociedad Geológica de España, 1994)

  Extensional tectonics and associated halokinetics processes controlled the sedimentation in the southwestern margin of the Basco-Cantabrian basin during Upper Jurassic and Lower Cretaceous times. The development of Mesozoic ...

  

• Sedimentación lacustre en la cuenca cenozoica de As Pontes (A Coruña) 

  Sáez, A.; Cabrera, L. (Sociedad Geológica de España, 1994)

  The lacustrine and swampy sequences recorded in the As Pontes basin are rather diverse in terms of facies and sequential arrangement, depending on the considered basin zone. Since these sequences developed synchronously ...

  

• Remagnetizaciones asociadas a diagénesis y su relación con el emplazamiento de láminas cabalgantes en el Pirineo Meridional 

  Dinarès Turell, Jaume (Sociedad Geológica de España, 1994)

  Paleomagnetic analysis in conjunction with petrographic Observations on Mesozoic carbonates from the southern Pyrenees reveals that the magnetization of thoserocks is a secondary CRM residing in both goethite and hematites ...

  

• Precisiones estratigráficas sobre el límite inferior de la Formación Artés (Paleógeno, cuenca del Ebro) 

  López Blanco, M.; Piña, J.; Marzo, M. (Sociedad Geológica de España, 1994)

  According to its original definition, the Artes Formation is formed by the ensemble of continental, red mudstones and sandstones interbedded with conglomerates resting on top of the marine deposits of the Bartonian to ...

  

• Nuevos datos sobre el Cretácico inferior al Norte de la provincia de Alicante. La serie del Castell de la Solana. Zona Prebética 

  Estévez, Antonio; López Arcos, M.; Castro Jiménez, José Manuel (Sociedad Geológica de España, 1994)

  The Sierra del Castell de la Solana (NE Alicante province) exhibits a thick section (about 750 m ) of Lower Cretaceous age. I tis adscribed to the Prebetic, in the External Zones of the Betic Cordillera. The stratigraphic ...

  

• Notas sobre la inversión tectónica y aloctonía de la cuenca Vasco-Cantábrica 

  Malagón, J.; Hernaiz Huerta, Pedro P.; Rodríguez Cañas, C.; Serrano, A. (Sociedad Geológica de España, 1994)

  The SW margin of the Basco-Cantabrian basin has suffered during the Alpine Orogeny the tectonic inversion of previous extensional structures and the overlapping of the Mesozoic series of the Plataforma Burgalesa over the ...

  

• Petrología y geoquímica del plutón aplopegmatítico de Peña Madrid (Sierra de Guadarrama, S.C.E.) 

  Huertas, María José; Villaseca, Carlos (Sociedad Geológica de España, 1994)

  The Peña Madrid aplo-pegmatitic pluton is a very fractionated l-type granite with typically MgO, Ti02, Ba, Sr, Nb and XREE low contents. They intrude as a sheet-like body in the Las Navas del Marqués batholith developing ...

  

• Origen de las brechas de la base del Jurásico de Leitza (Cordillera Vasco-Cantábrica oriental, Navarra) 

  Gallego, R.; Aurell, Marc; Bádenas, Beatriz; Fontana, B.; Meléndez Hevia, Guillermo (Sociedad Geológica de España, 1994)

  ExtensionsI tectonic activity at the Triassic-Jurassic boundary in the eastern Basc-Cantabric Range (N Spain) in v o lv e d the generation o f a set o f semigraben basins. The largest basin appears related to the Leitza ...

  

• Observaciones sobre la posición estratigráfica de las formaciones de rudistas de Sant Corneli (cuenca cretácica surpirenaica central) 

  Gili, E.; López, G.; Obrador, A.; Skelton, P. W.; Vicens, E. (Sociedad Geológica de España, 1994)

  Rudist formations crop out around the Sant Corneli anticline (South-Central Pyrenees), both on its southern flank (les Collades de Basturs) and on its northern flank (Vilanoveta). Earlier biostratigraphical studies assigned ...

  

• Notas sobre la estructura cabalgante de Rojas-Santa Casilda 

  Rodríguez Cañas, C.; Hernaiz Huerta, Pedro P.; Malagón, J.; Serrano, A. (Sociedad Geológica de España, 1994)

  The easternmost part of the Plataforma Burgalesa Frontal Thrust (Basco-Cantabhan Basin) is the Rojas Santa Casilda Structure. This unit has suffered a displacement first towards the South and later towards the Southeast ...

  

• Movimientos verticales recientes en Cataluña a partir de nivelaciones de precisión 

  Giménez, J.; Suriñach, Emma; Goula, Xavier; Fleta, J. (Sociedad Geológica de España, 1994)

  To determine recent vertical movements (R.V.M.) from precise leveling data we have compared the original height differences recorded in the field by the Instituto Geografico Nacional in two different campaigns. The accuracy, ...

  

• Los museos de mineralogía y de petrología aplicadas, en la renovación pedagógica de la enseñanza de la Geología 

  Mata Perelló, Josep Maria (Sociedad Geológica de España, 1994)

  Through this information, it will be tried to analyse the role that the museums of geology can (and should) play, with tematic sections of mineralogy and petrology, in the way to the pedagogical renovation of the teaching ...

  

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