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Browsing Geogaceta -- Nº 28, (1999) by Title
Now showing items 1-20 of 38
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Análisis de la deformación de los sistemas de venas y filones hidrotermales de la Península Hurd (Isla Livingston, Antártida Occidental)
(Sociedad Geológica de España, 1999)In Hurd Peninsula (Livingston Island, Western Antarctica) has been analysed the orientation of calcite c-axes and e-twin from the sparitic grains that filled the hydrothermal veins and lodes in this region. The c-axes ... -
Análisis multivariable aplicado a datos hidmquimicos de las zonas húmedas de la provincia de Malaga
(Sociedad Geológica de España, 1999)In the province of Málaga there exist a series of wetlands which are protected as Natural Reserves. The management and conservation of these small lakes should be made according to scientific criteria instead of political ... -
Apatite fission track dating of the post-magmatic apatite + hematite + carbonate assemblage from the Jumilla lamproites (SE Spain)
(Sociedad Geológica de España, 1999)En este trabajo se presentan los resultados de la datación mediante la técnica de huellas de fisión en apatito de las venas incluidas dentro de las lamproitas de la localidad de Jumilla (Murcia). Los resultados obtenidos ... -
Aplicaciones de la Microscopía Electrónica de Barrido al estudio del deterioro y la restauración de edificios históricos: la Casa de Oquendo (s.XVI) y el Palacio de la Diputación (s.XIX) (San Sebastián, País Vasco)
(Sociedad Geológica de España, 1999)The studies on the deterioration and restoration of buildings have increased in the last decades. The role of Scanning Electron Microscopy (S.E.M.) as a tool for textural studies of both damaged and restored rocks is ... -
Características de los depósitos de la laguna de La Ratosa (Málaga)
(Sociedad Geológica de España, 1999)The genesis of the La Ratosa lake (N of Málaga, Spain) can be related to the karstification of the evaporite-bearing triassic substratum. It presents a flooding regime typically seasonal. The clastic deposits on the lake ... -
Caracterización morfosedimentaria de la llanura costera entre el río Paraná Guazú y las localidades de Ibicuy y Gualeguay. Provincia de Entre Ríos, Argentina
(Sociedad Geológica de España, 1999)The Paraná River in terms of length and water discharge is the second after the Amazon in South America, and it generates a large delta when it reaches the Rio de La Plata estuary. It is possible to differentiate a number ... -
Cronología de la transgresión holocena en la Ria de Foz, (Lugo, Galicia, España)
(Sociedad Geológica de España, 1999)The Flandrian or postglaciar transgression in the coast of Galicia, (NW of Spain), caused the flood of the final parts of the Atlantic Galician river systems with the consequent formation of the Galician Rías. The advance ... -
Cronologia glaciar Pleistocena del NW de la Peninsula Iberica mediante 21 Ne cosmogenico en cuarzo
(Sociedad Geológica de España, 1999)Late Pleistocene glaciations in the NW Iberian Peninsula over Serra de Queixa and Serra de Xurés, all with granite substrata, were studied by mass spectrometry using cosmogenic 21 Ne. Rock cores were drilled in glacial ... -
Cuarzo idiomorfo detrítico en la base del Cretácico Superior de la Depresión Intermedia (Navarra): implicaciones paleogeográficas
(Sociedad Geológica de España, 1999)In the southern border of the Bortzirí (Cinco Villas) Palaeozoic massif (Basque Pyrenees, Navarra) a narrow Alpine syncline known as the Central Depression consists mainly of Upper Ctreaceous calcareous flysch sediments. ... -
Datación de yacimientos paleontológicos de la cuenca de Guadix-Baza (sector de Cúllar-Baza, Granada, España) y primera estimación de la edad de la apertura de la cuenca mediante el método de racemización de aminoácidos
(Sociedad Geológica de España, 1999)New amino acid racemization dating data from four Guadix-Baza basin (Cullar-Baza area) localities are presented. The former mathematical algorithms were improved to new ones based oh palaeomagnetical data from the ... -
Datos preliminares sobre la fauna de vertebrados (Pisces) del Devónico Inferior de Nigüella (Cadenas Ibéricas)
(Sociedad Geológica de España, 1999)Two sections at Nigüella (IberianChains) have provided a rich and varied Lochkovian and Pragian (Early Devonian) fish microremais association. The outstanding occurrence of two levels loaded with fish remains braking the ... -
Depósitos de dunas ascendentes en la sierra de Los Tarjados, provincia de La Rioja, Argentina
(Sociedad Geológica de España, 1999)Eolian climbing dunes found in the sierra de Los Tarjados (south of the La Rioja province> Argentina) are described in this paper. According to their morphology two mayor types of dunes have been recognized: 1) climbing ... -
Depósitos travertínicos de Alicún (Depresión de Guadix, Granada: S España)
(Sociedad Geológica de España, 1999)Travertine deposits associated with the Alicún de las Torres hidrothermal springs (S Spain) show two types of architecture basad on their morphology: travertine platforms and travertine canals. The travertine platforms ... -
Descubrimiento del Burdigaliense (formación Viñuela) en la cobertera Gomáride de Ceuta (Rif septentrional)
(Sociedad Geológica de España, 1999)In the Ceuta area, located at the northernmost end of the Rifian Internal Zones, new outcrops of the Tertiary Formations covering Chomarid units, are studied. The new data obtained allow to characterize the Fnidek Formation ... -
Dinámica litoral y erosión en la ría de El Barquero: factores antrópicos y procesos naturales
(Sociedad Geológica de España, 1999)The Ria of El Barquero, in the north-western coast of Spain, has only recently been altered by anthropogenic structures, so that effects of such interferences in the natural dynamic processes of the coast are in some way ... -
El abanico aluvial del Pilcomayo, Chaco (Argentina - Bolivia -Paraguay): características y significado sedimentario
(Sociedad Geológica de España, 1999)The Pilcomayo river begins in the Bolivian Andes and flows eastwards across the Chaco region, for 1,100 km before joining the Paraguay river. Today this river marks the border between Argentina and Paraguay. It is a typical ... -
El complejo arrecifal del Mioceno superior de Tazouta (SE de Fez, Marruecos): Paleontología, paleoambientes y paleogeografía
(Sociedad Geológica de España, 1999)An analysis based on the study of corals, coralline algae, accompanying fauna and microfacies allowed to define, in the Tazouta reef complexe (south east of Fes; Morocco), a marine platform characterized by a varied and ... -
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. ... -
El levantamiento Tortoniense-Cuaternario de Sierra Nevada (Granada, España): Fenómenos de tectónica gravitatoria en su borde occidental
(Sociedad Geológica de España, 1999)The former Alpujarride nappes at the western margin of Sierra Nevada are strongly affected by gravitational collapse phenomena, with significant thinning of their original thickness, creation of new detachment surfaces and ... -
El Magmatismo Básico en La Cuenca Fameno-Dinantiense de Sidi Bettache (Marruecos Hercínico Noroccidental): Nuevos Datos
(Sociedad Geológica de España, 1999)Commonly is held up that the Sidi Bettache Basin corresponds to the collapse of a large block of the middle Devonian carbonate platform with subsequent magmatic injections emplacement along its boundaries. Previous studies ...
