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Ensayo cronológico de las tobas cuaternarias del río Piedra (Cordillera Ibérica), Preliminary chronology of the Quaternary tufas from the Piedra River (Iberian Range)

  • Sancho, Carlos
  • Arenas, Concha
  • Pardo, Gonzalo
  • Hellstrom, John
  • Ortiz, José Eugenio
  • Torres Álvarez, Enrique|||0000-0001-8531-7696
  • Rhodes, Edward
  • Osácar, María Cinta
  • Auqué Sánz, Luis
A preliminary absolute chronology for the Quaternary calcareous tufa deposits from the Piedra River valley (Iberian Range, NE Spain) has been carried out based on U series dating, Amino Acid Racemization, Optically Stimulated Luminescence and Radiocarbon dating techniques. Although the age uncertainties of the obtained dates are substantial, four stages of tufa accumulation correlated to MIS 9, 7-6, 5 and 1 can be distinguished. The most favourable period for tufa accumulation is located around the isotopic stage 7
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Nuevos espacios para la ciencia política : una revisión de Montesquieu, New spaces for political science : a review of Montesquieu

  • Martínez López, Juan José
Basándose en su tesis doctoral aprobada en 2013 y titulada “Construcción sociocultural y perspectiva antropológica en Montesquieu. Implicaciones políticas”, el autor sigue la línea de pensamiento y vocación universal que ya desde sus orígenes reclamaron para la Ciencia Política Platón y Aristóteles, disertando sobre la necesaria revisión del lugar y la metodología que corresponde hoy a la misma, habida cuenta su desfase teórico y metodológico respecto de las nuevas realidades socioculturales existentes. A la luz de los presupuestos de las obras de Sergio Cotta, Berger y Luckmann, así como de la teoría de la complejidad de Edgar Morin, en este artículo se ponen de manifiesto las consecuencias de profundizar en las dimensiones antropológica y sociológica de la obra de uno de los grandes teóricos de la Filosofía Política Moderna: Montesquieu., Based on doctoral research submitted in 2013 and entitled “Sociocultural construction and anthropological perspective on Montesquieu. Political Implications “, the author is following the line of thought and universal vocation that claimed from its origins for the Political Science Plato and Aristotle, speaking about the necessary review of the place and the methodology that corresponds to it today, given its theoretical and methodological gap with the new socio-cultural realities. With the point of view of the works of Sergio Cotta, Berger and Luckmann, and complexity theory of Edgar Morin, this article explains the consequences of delving into the anthropological and sociological dimensions of the work of one of the great theorists of Modern Political Philosophy: Montesquieu.
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Breve historia de la censura

  • Martínez-Salanova Peralta, Pablo
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Primeros resultados de huellas de fisión en apatito en el sector Lugo-Ancares (Noroeste de la Península Ibérica), Preliminary apatite fission-track results in the Lugo-Ancares region (Northwest of the Iberian Peninsula)

  • Capote, Ramón
  • Barbero, Luis
  • Insua Arevalo, Juan M.
  • Martínez Díaz, J. J.
  • Martín González, Fidel
The Northwest of the Iberian Peninsula is characterised by the absence of Mesozoic sedimentary deposits, the Cenozoic sediments being scarce. Due to that, the chronology of the geological events in the area is difficult to establish. Nevertheless, in the absence of deposits during a certain time span, the thermal history a particular area during that time-elapse could have been recorded in previous materials. Modelling of the apatite fission-track (AFT) data is a powerful tool to infer geological information in this kind of regions. The tectonothermal history observed in the AFT models begins with the intrusion of the late Variscan granitic plutons and their cooling in the upper crustal levels. After this initial event, three main episodes have been identified. The first involves an important heating during the Upper Jurassic and Earlier Cretaceous, which can be related to the evolution of the Atlantic passive margin. The second heating episode can be connected to the beginning of the Europe-Africa collision during the Upper Cretaceous and the Earlier Palaeogene. Finally, a cooling episode is observed during the Paleogene, which can reflect exhumation processes according with the tectonic structures and the development of the present day topography
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El desarrollo de la Capa de Arroyofrío (límite Calloviense-Oxfordiense) al Sur de Zaragoza, entre Ricla y Aguilón: bioestratigrafía y facies, On the lateral extent of the Arroyofrío Bed (Callovian-Oxfordian boundary) between Ricla and Aguilón (south of Zaragoza, Iberian Range, Spain): biostratigraphy and facies

  • Meléndez Hevia, Guillermo
  • Ramajo Cordero, Javier
  • Martínez Cotanda, R.
New biostratigraphic data on the Middle-Upper Jurassic (i.e. Callovian-Oxfordian) boundary bed (the socalled: Arroyofrío Bed), at the South of Zaragoza (NE Iberian Range) show that the Callovian-Oxfordian boundary is located at the base of this irregular stratigraphic interval. Both the facies and fossil content of the bed (ammonites, belemnites, brachiopods, bivalves, crinoids, stromatolite structures and planktic foraminifera) are indicative of marine sedimentary conditions. However, the revision of biostratigraphic data, as well as taphonomic analysis, confirm the presence of a basin-extent stratigraphic and registratic gap involving at least the upper Lamberti and Mariae zones. Taphonomic features shown by ammonite internal moulds, such as disarticulation surfaces, truncation surfaces, phosphate infilling, and in some cases ellipsoidal abrasion facets and annular furrows, are evidence of taphonomic reelaboration. The latter abrasion features indicate that ammonite reelaborated moulds stood for long time on the sea bottom after being exhumed and were abraded by the action of shallow directional currents under extremely shallow intertidal to even supratidal conditions, resulting in a probable widespread sub aerial exposure of the platform. All this supports the hypothesis of the boundary bed being formed in punctuated sedimentary events during lower and, most probably, early middle Oxfordian. These data are of primary importance to understand the palaeogeographic setting of the northeastern Iberian Platform at the turn of Middle-Upper Jurassic
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Factores de enriquecimiento metálico en sedimentos holocenos del estuario del río Tinto (SO de España), Metal Enrichment Factors in Holocene Sediments in the Tinto River Estuary (SW Spain)

  • López González, Nieves
  • Borrego Flores, José|||0000-0002-7079-0197
  • Carro Flores, Berta
  • Lozano Soria, O.
Metal concentration in sediments samples from two vibracores in the Tinto river estuary it has been determined. The enrichment factors (EF) of metal associated to sulphide deposits (Fe, Cu, Zn, Pb and As), in most cases, is over 2. Cu, Zn and As have much higher EF, over 10 in surficial samples. The progressive shallowness of the estuary has undergone a relative increase in acidic river water volume with respect to seawater. This effect has originated a downstream displacement of acid mixing processes affecting the estuary, which is reflected in higher metal concentration in sediments of the outer zones of the system
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Ambiente sedimentario y ciclicidad estratigrafica de los materiales de la Formacion «Arenas y ardllas del Collado» (Cretacico inferior), en el sector de Alpuente (Valencia), Sedimentary environment and stratigraphic ciclicity of the Lower Cretaceous «Arenas y arcillas del Collado» Formation, in Alpuente (Valencia)

  • Santisteban, Carlos de
The «Arenas y arcillas del Collado» Formation (Lower Cretaceous, Southwestern Iberian Basin, Valencia) represent a wave-dominated delta. It contain fluvial and shallow- marine deposits wich are arranged in two types of high-frequency sequences. The first type (up to 2 m thick) is a transgressive - regressive parasequence formed by shoreface to fluvial deposits. The second type (up to 15 m thick) is a composite depositional sequence formed by four to six parasequences. The lower part of each deoositional sequence contain a progradational thick group of shoreface / foreshore sandstone units, which sharply overlies an erosional surface modified by waves during transgression
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Estructura del pluton sincinematico de Lys (Zona Axial del Pirineo), Structure of the synkinematic Lys pluton (Pyrenean Axial Zone)

  • Hilario, Asier
  • Aranguren, A.
  • Tubía, José María
  • Pinotti, Lucio P.
From the structural study (using field, microstructural and anisotropy of magnetic susceptibility data) of the central traverse across the Lys pluton (Pyrenean Axial Zone), w'e propose that the emplacement of this pluton is synkinematic with the Variscan deformation of the Cambro-Ordovician schists that form its northern envelop. The late emplacement events involve a dextral transpressional deformation leading to the development of the Esera-Gistain and Caillaouas ductile shear zones. These Variscan shear zones were reactivated during the Pyrenean orogeny
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Desarrollo sostenible y desarrollo solidario

  • Gaona, Alejandro
El actual modelo de producción capitalista basado en el crecimiento sin límites compromete no sólo a las generaciones presentes sino a las venideras. Es el resultado de un modelo de organización social y económica que debe ser cambiado porque muestra una forma equivocada de relaciones entre las personas y con el entorno. La alternativa reside en un desarrollo sostenible como manifestación de un desarrollo solidario que requiere de una educación moral comprometida con la solidaridad, el compromiso y la esperanza.
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Relleno sedimentario y destrucción de una pequeña cuenca fluvio-lacustre en la Sierra Sur de Jaén (Cordilleras Béticas), Sedimentary filling and destruction of a small fluvio-lacustrine basin in the Sierra Sur of Jaén (Betic Cordilleras)

  • García García, Fernando
  • Sánchez Gómez, Mario
The sedimentary infill of a small continental basin and the processes involved in its transformation into an erosionaI basin have been studied. The Otíñar basin is a fluvio-lacustrine basin developed during the Quaternary (?) on the Subbetic rocks at the south of Jaén city. Its sedimentary infill is made up of three stratigraphic units representing different stages as exorheic and endorheic basin. The destruction of the basin took place when the axial fluvial system base level occupied a relatively lower position and the fluvial system entrenched in the sedimentary infill leaving at least three terraces levels. Climatic and tectonic factors are discussed as controls of the sedimentary and erosional evolution of the Otíñar basin
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