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Browsing Geogaceta -- Nº 43, (2007) by Title
Now showing items 1-20 of 33
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Análisis de la microfábrica del cuarzo en los resister cuarcíticos de la zona de cizalla dúctil de la Garganta de las Pozas, parte central del Macizo de Gredos
Díaz Alvarado, Juan; Fernández Rodríguez, Carlos
; Díaz Azpiroz, Manuel; Ramírez Rico, J.; Moreno-Ventas Bravo, Ignacio; Castro Dorado, Antonio (2007)
The NE-SW «Garganta de las Pozas» ductile shear zone goes along the contact between one of the granodioritic sheets mapped and the «Refugio del Rey» anatectic complex. As well as the descriptive work, it has been determined ... -
Caracterización geoquímica de las capas ricas en materia orgánica registradas durante el estadio isotópico marino 7 en el Mar de Alborán (Mediterráneo occidental)
(2007)Samples from the Alboran Sea (Western Mediterranean) were studied in order to characterise the organic rich layers recorded during marine isotope stage 7 from a geochemical point of view. X ray fluorescence measurements ... -
Carbonatos palustres en llanuras de inundación fluviales del Plioceno-Pleistoceno (Cuenca de Guadix, Granada, España)
(2007)During its continental stage of infilling (Late Tortonian-Late Pleistocene), the Guadix Basin acted as an endorheic depression in which an axial fluvial system, fed partialy by two transverse alluvial systems, drained ... -
Comparación de los Complejos Intrusivos de Jörn y Viterliden en el distrito minero de Skellefte, norte de Suecia
González Roldán, Manuel Jesús; Pascual Martínez, Emilio; Donaire Romero, Teodosio; Allen, Rodney L. (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 ... -
Comportamiento del FE y otros metales en el agua de un sistema fluviomarino afectado por procesos de mezcla ácida (Ría de Huelva, España)
Fe, Ni, Cu, Zn and Cd concentrations have been analyzed in 14 water samples in three cruises along of a estuary system affected by acid mixing processes. In the sectors of the estuary where the mixing processes takes ... -
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 ... -
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 ... -
Contenidos de CaCO3 en los pares marga-caliza del Maastrichtiense y Daniense en Sopelana, Arco Vasco: facies grises frente a facies rojas
(2007)The Sopelana sea-cliff section exposes a continuous marl-limestone alternation from the Lower Maastrichtian to the Danian, in the deep Basque Arc domain. The high-resolution analysis (% CaCO3) of the Lower- Upper ... -
Controles tectónicos y estructurales de la incisión fluvial en el centro-oeste de la Cuenca del Duero, NO de Iberia
(2007)The present work approaches incision rates quantification of Duero River in the central- west part of Iberia and implications of tectonics in the evolution and change of drainage patterns. For this aim we calculate incision ... -
Determinación de la carga contaminante disuelta transportada por el río Meca (Huelva, España)
Galván González, Laura; Olías Álvarez, Manuel; Nieto Liñán, José Miguel; Cerón García, Juan Carlos; Miguel Sarmiento, Aguasanta (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 ... -
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, ... -
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 ... -
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. ... -
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 ... -
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 ... -
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 ... -
Geología de los materiales de construcción de la Iglesia de SantaMaria degli Angeli de Alì Superiore (Sicilia nororiental, Italia)
(2007)This study deals with the petrographic analysis of a great variety of construction materials used to build a 16th century church in NE Sicily. X-ray diffraction and optical microscopy techniques were useful to establish the ... -
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 ... -
Industria del Paleolítico Medio en Beefsteak Cave (Gibraltar): implicaciones paleoambientales
Giles, Francisco; Finlayson, Clive; Finlayson, Geraldine; Fa, Darren A.; Rodríguez Vidal, Joaquín; Cáceres Puro, Luis Miguel; Martínez Aguirre, Arancha; Santiago, A.; Gutiérrez López, José María (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 ... -
La fauna de vertebrados del Dolmen de Errekatxuetako Atxa (Holoceno) (Zeanuri, Bizkaia)
(2007)During the excavation of the Dolmen of Errekatxuetako Atxa in 2006 several vertebrate remains were found. Mammals are represented in the site by one lagomorph, six rodents, three insectivores, three artiodactyls, two ...
