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Browsing Geogaceta -- Nº 14, (1993) by Title
Now showing items 22-41 of 47
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Fallas de despegue extensional miocenas en el área de Sierra Tejeda (Béticas centrales)
Alonso Chaves, Francisco Manuel
; García Dueñas, V.; Orozco, Miguel (Sociedad Geológica de España, 1993)
In the Sierra Tejeda area, NE Malaga, the existence of detachments and low angle normal faults has been recognized. The faults developed during three Miocene extensional events of AquitanianBurdigalian, probably Langhian ... -
La geología marina desde la perspectiva del Instituto Español de Oceanografía
(Sociedad Geológica de España, 1993)The "Instituto Español de Oceanografía" (Spanish Oceanographic Institute) is a body of the "Ministerio de Agricultura, Pesca y Alimentación" (Food and Fisheries Department). It engages in research in many oceanographic ... -
Geomorfología de la península del Cabo Shirreff. Isla Livingston. Shetland del Sur. Antártida
(Sociedad Geológica de España, 1993)The geomorphological exploration and mapping of Cape Shirreff area was carried out during the 1992/93 Spanish Antartic Expedition in Livin gston Island. In this area two main systems of lanforms were recognized. A) Marine ... -
Influencia de las evaporitas de borde en la hidrogeoquímica del acuífero de la Vega de Granada
(Sociedad Geológica de España, 1993)The influence of the input of saltwater on the chemistry of the Vega de Granada aquifer is studied. The three main areas of saltwater pollution are defined in addition to discussing the origin of the different waters -
Interpretación del mapa de Anomalías de Bouguer de la zona nororiental de la Cuenca de Madrid
(Sociedad Geológica de España, 1993)The gravity field in the Ne zone of the Madrid Basin and conterminous areas is characterised by a number of regionally important anomalies referred to gradients and minimum and maximum axes. The Ledanca gradient separates ... -
Límites dinámicos y modos de transporte en el litoral del Maresme (Barcelona)
(Sociedad Geológica de España, 1993)The sediment transport in a littoral system Is conditioned by the bathymorfology, sediment type, and by the dynamic regime. Generation of a numerical model including all of these factors, allow us the transport types ... -
Middle Miocene extensional faulting events and Alpujarride Units in the Central Betics
(Sociedad Geológica de España, 1993)In the Central Betics, the Alpujarride Complex is made up of units which result from the dismembering of pre-Miocene fold nappes during a Late Burdigalian (?)-Langhian extensional event -
Mineralogía de los sedimentos de la Laguna de Fuente de Piedra (provincia de Málaga)
(Sociedad Geológica de España, 1993)Sampling of sediments from the Fuente de Piedra playa lake (Málaga province, Spain) has been carried out both in the surface salt crust and in two shallow holes. The following minerals have been mainly indentified: quartz, ... -
Modelo genético de las secuencias arenosas de plataforma de la Formación Balmaseda (Albiense de la Cuenca Vascocantábrica, N de España)
(Sociedad Geológica de España, 1993)A new palaeoenvironmental interpretation of the Middle Albian-Lower Cenomanian Balmaseda Formation, deposited in SW margin o f the Basque Cantabrian Basin (N Spain) is offered here. According to the facies association, ... -
Neoformación de fases minerales secundarias ricas en tierras raras en los granitos de la Sierra de Guadarrama: Bastnaesita-(CE)
(Sociedad Geológica de España, 1993)The subsolidus postmagmatic alteration processes in the granites of the Sierra de Guadarrama produce the transformation and neoformation of the principal and accesory phases. One of these secondary minerals is the ... -
Nota sobre las plantas fósiles del Mioceno de Epila (Zaragoza)
(Sociedad Geológica de España, 1993)Fossil plants from Epila village (Zaragoza province) at the Ebro Depression are described. Osmunda parschlugiana, Sabalites and undetermined monocotyledoneous are found in travertinic limestone of a supposed Lower-Middle ... -
Nuevos datos sobre comprensión pleistocena en el extremo oriental del Algarve (Portugal)
Flores Hurtado, Enrique; Rodríguez Vidal, Joaquín; Cáceres Puro, Luis Miguel (Sociedad Geológica de España, 1993)
The end of the Pliocene was characterized by a return to the compressive regime throughout the southern of the Iberian peninsula. Quaternary deformations are intense in places and correspond to folds and occasionally ... -
Los Orbitolínidos de las Calizas de Aras de Alpuente (Albense superior) en la región de Requena (Cordillera Ibérica, Valencia)
(Sociedad Geológica de España, 1993)The Orbitolinids are studied in five Upper Albian sections composed by neritic carbonates. Their sequential correlation allow the biostratigraphic characterization of the parasequences and the elaboration of a stratigraphic ... -
Organización secuencial del sector occidental del abanico costero de Sant Llorenç del Munt (Eoceno, cuenca de antepaís surpirenaica)
(Sociedad Geológica de España, 1993)The study of the relationships among facies belts in the Eocene Sant Llorenç d el Munt fan-delta complex allow sus to differentia te three orders of transgressive-regressive cyclicity . The basic building blocks are the ... -
Los piroxenos de las rocas graníticas de la Sierra de Guadarrama (S.C.E.)
(Sociedad Geológica de España, 1993)The pyroxenes are rarely observed in the granitic rocks from the Sierra de Guadarrama. The clinopyroxene only exists in the basic-intermediate types of cafemic calc-alkaline associations ( El Tiemblo, Almenara, Ventosilla, ... -
Las pistas fósiles de los anticlinales de Alcudia y Abenójar (Zona Centroibénca). Edad de las series
(Sociedad Geológica de España, 1993)Cambrian-type (Bergaueria and Monomorphichnus) and other trace fossils (Hormosiroidea, Palaeophycus, Phycodes? and Belorhaphe?) are described in theAlcudia and Abenojar anticlines and compared with similar traces by other ... -
Presencia de Cloritoide en las pizarras ordovícicas del sinforme de Alcañices (Zamora)
(Sociedad Geológica de España, 1993)In the present work we describe for the first time the presence of chloritoid associated with slates of Llanvirn-Llandellian age (Latedo Formation) o f the southern flank of the Alcahices Synform (Zamora). Usually this ... -
Presencia de mineralogías ricas en Zn como evidencias de la actividad hidrotermal enzonas de cizalla extensionales (Complejo Nevado-Filábride, Béticas)
(Sociedad Geológica de España, 1993)Late Zn-rich assemblages have been found in several lithilogies of the Bédar-Macael unit and upper part of the Calar-Alto unit (Nevado-Filabride Complex). The nowadays brittle contacts between the nevado-filábride and ... -
Procesos de sedimentación ligados a flujos gravítacionales en regiones semiáridas. Un ejemplo del SE de España
(Sociedad Geológica de España, 1993)In the studied area the rainfalls ofautum 1973 and 1989 led to the development of gravity flows of mud and/or debris flow type and their characteristic sediments. The analysis of rain fall conditions, processes and deposits ... -
Rasgos generales del relieve en el sector suroriental de la Sierra Almijara (Málaga)
Rodríguez Vidal, Joaquín; Cáceres Puro, Luis Miguel (Sociedad Geológica de España, 1993)
The morphostructural landform o f this Betics coastal sector is conditioned by lithological, structural (Neotectonics) and geomorphologicai features. Tortonian planated relief was faulting during Mio-Pliocene age by a NW-SE ...
