Browsing Geogaceta -- Nº 43, (2007) by Issue Date
Now showing items 1-20 of 33
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Determinación de la carga contaminante disuelta transportada por el río Meca (Huelva, España)
(2007)The drainage network of the Odiel river (SW Spain) is intensively contaminated by acid mine drainage (AMD). The Odiel river basin drains the materials of the Iberian Pyrite Belt (IPB), a large metalogenic province hosting ... -
Geometría y distribución espacial de la transmisividad en el Acuífero Mioceno del Sistema Mancha Oriental (Cuenca del Júcar)
(2007)The hydrogeologic unit UH2 (Miocene Aquifer) supports a great amount groundwater abstractions and it is hydraulically connected to the Jucar river. Water withdrawal for irrigation purposes has driven to a regional ... -
Condiciones P-T en xenolitos mantélicos de los volcanes la Banya del Boc y el Puig d’Adri (Girona)
(2007)Several thermometers and one barometer are used in order to determine the P-T conditions of type I xenoliths enclosed in alkaline mafic lavas from the Catalan Neogene-Quaternary volcanism. Average temperatures from the ... -
Modelo de evolución topográfica en el NO de la Península Ibérica durante la delaminación litosférica al final de la Orogenia Varisca
(2007)Through a simple isostatic balance modelization we attempt an approach to one of the possible lithospheric and topographical scenarios that took place in the aftermath of the Variscan Orogeny. From this point of view, ... -
Evolución metamórfica de los esquistos de AP/BT de Ceán (Unidad de Malpica-Tui, NW del Macizo Ibérico)
(2007)Metapelitic schists from the upper structural levels of the Malpica-Tui Unit contain an initial blueschist facies mineral assemblage that appears mainly preserved as micro-inclusions in garnet, albite and chloritoid po ... -
Estudio morfológico y microestructural de Crassostrea gigas en estuarios y puertos deportivos del oeste de la costa de Bizkaia
(2007)This work analyses the morphology and the microstructural characteristics of some specimens of Crassostrea gigas collected in diferents points of the Biscay coast. Oysters recollected in yachting harbours, where they are ... -
Variación espacio-temporal de Ca-Mg-Sr en el agua de goteo de la Cueva del Canelobre (Alicante): ejemplo de procesos de infiltración en ambientes kársticos semiáridos
(2007)From may/2006 to april/2007 a monthly sampling of the recharge conditions and main hydrogeochemical parameters was conducted at a network of dripping points within Canelobre cave (Alicante). Speleothems are fed by a ... -
Movilidad de las formas de fondo en la desembocadura del estuario del Río Piedras (Huelva) durante las mareas vivas
(2007)The present work analyzes the bed mobility in the outer area of the estuary of Piedras River by observing the changes of morphology, dimensions and orientation of bedforms by means of the use of technical of Side-Scan ... -
Modelo de distribución espacial continua de d18O en la precipitación en la provincia de Burgos. Desarrollo de la metodología y aplicación en hidrología
(2007)The main aim of this paper is to develop a methodology to obtain a continuous spatial distribution of isotopic composition in precipitation over Spain. The methodololgy applies Geographic Information Systems (GIS) tools ... -
Composición isotópica del Pb en galenas de la región de la Falla de Azuaga. Aportaciones al modelo plumbotectónico de la Zona de Ossa-Morena
(2007)New Pb isotopic analyses have been obtained on twenty samples of galena from the Azuaga area. In spite of the overall homogeneity, the results for samples to the North of the Azuaga Fault are perceptible different from ... -
Nota sobre la presencia de una sucesión cretácica en el Macizo de Las Ubiñas (Cordillera Cantábrica). Implicaciones tectónicas y geomorfológicas
(2007)This paper describes the stratigraphy and structural setting of a new outcrop of Cretaceous sands and clays located in the center of the exposure of Palaeozoic rocks in the Cantabrian Zone. This isolated outcrop of Cretaceous ... -
El sílex de tipo “Urbasa”. Caracterización petrológica y geoquímica de un marcador litológico en yacimientos arqueológicos del Suroeste europeo durante el Pleistoceno superior y Holoceno inicial
(2007)The “Urbasa” flint, which occurs intercalated within shallow-water limestones of Thanetian (upper Paleocene) age was one of the best and most used flint sources during the Prehistoric times in the Basque-Cantabrian area. ... -
Distribución de la deformación en granitoides sincinemáticos intruidos en condiciones transpresivas (Sanabria, Zona Centro-Ibérica, Macizo Ibérico)
(2007)The Sanabria Lake plutons, located in the Central Iberian Zone of the Iberian Massif, intruded in a dextral strike-slip fault bridge under transpressive conditions. The deformed zone underwent a strain partitioning process, ... -
Comparación de los Complejos Intrusivos de Jörn y Viterliden en el distrito minero de Skellefte, norte de Suecia
(2007)The Skellefte Mining District is located in the northern Sweden, in an early Proterozoic (1.90-1.87 Ga) volcanic arc province in the Baltic Shield. It is composed by a complex submarine volcanosedimentary succession named ... -
Paleosismicidad asociada al tránsito Devónico – Carbonífero en la Zona Surportuguesa (SW Ibérico)
(2007)In this paper several evidences of seismic activity in the latest Devonian deposits of the South Portuguese Zone are reported. They are represented by deposits and sedimentary structures associated with processes such ... -
El papel de la tectónica en la evolución sedimentaria en el sector occidental de la Cuenca de Guadix (Cordillera Bética, España)
(2007)In this work we develop an up-to-date stratigraphical scheme of a determinate zone within the western sector of the Guadix Basin (Betic Cordillera, South of Spain), where most of the main large-mammal sites are ... -
Sismotectónica en relación con la Zona de Fractura Azores –Gibraltar: Análisis del terremoto de 12 de febrero de 2007, SO del Banco de Gorringe
(2007)This work deals with the analysis of the seismicity and tectonic evolution of the eastern end of the Azores – Gibraltar Fracture Zone. The location of the main seismogenetic areas in this region is related to the complex ... -
Estudio preliminar de la paleointensidad de rocas volcánicas del Mioceno superior y Plioceno del sudeste de la Península Ibérica
(2007)A paleointensity study has been carried out on samples from 13 volcanic sites belonging to four different types of volcanism of late Miocene to Pliocene age from south-eastern Spain. Rock-magnetic experiments including ... -
La serie paleógena de la unidad superior del Gomáride en Talembote (Rif Interno, Marruecos)
(2007)The lower Paleogene stratigraphic successions of the Talembote upper Ghomaride Unit represent an interval of age going from the (middle?) Ilerdian to the early Bartonian, showing a transgressive sequence interrupted by ... -
Industria del Paleolítico Medio en Beefsteak Cave (Gibraltar): implicaciones paleoambientales
(2007)Beefsteak Cave is located towards the southern end of the Rock of Gibraltar, along the cliff line between the wave-eroded platforms of Europa and Windmill Hill Flats. Set within the grey dolomites of the early Jurassic ...