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Browsing Geogaceta -- Nº 46, (2009) by Issue Date
Now showing items 1-20 of 45
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Partición de la deformación cenozoica intraplaca en el Sistema Central
(2009)A new model for Cenozoic strain partitioning is proposed here for the Central System at the Messejana (Plasencia) fault zone. It explains the simultaneous movement of parallel NE-SW trending thrust and strikeslip faults ... -
La sección de San Miguel de Salinas (Cuenca del Bajo Segura). Significado paleoambiental de las asociaciones de foraminíferos en relación con la Crisis de Salinidad del Messiniense
(2009)In the composite section of San Miguel de Salinas the following synthems are represented: MI (preevaporitic Messinan), MII (syn-evaporitic Messinian) and P (post-evaporitic Pliocene). The foraminiferal assemblages of ... -
Facies laminadas en la secuencia sedimentaria del lago de Montcortés (Lleida) durante los últimos 6.000 años
(2009)The different sedimentological, geochemical and geophysical analysis performed in the Montcortés lake sedimentary record (Pre-Pyrenees, Lleida) helps to interpret the sedimentary evolution of this karstic lake during the ... -
Diferenciación morfológica submarina en el área del Umbral del Estrecho de Gibraltar: resultados preliminares
(2009)Offshore, the bathymetry of the Gibraltar Straits, situated in the westernmost Mediterranean, is characterized by an area of topographic highs which link the Spanish and Marrocan platforms, the socalled Gibraltar Threshold ... -
Reconstrucción de las condiciones paleoambientales del depósito Pñ (Macizo de Peñalara, Sierra de Guadarrama. Madrid), durante los últimos 2.000 años, a partir del contenido en microfósiles no polínicos (NPPs)
(2009)The content in non-pollen palynomorphs (NPPs), constitutes an important tool at the time of reconstructing the paleoenviromental changes of a deposit and explaining them in terms of climate and/or anthropic activity. This ... -
Asociaciones de foraminíferos bentónicos recientes en la plataforma marina de las Guayanas
(2009)A total of 183 benthic foraminiferal species have been identified in the continental shelf of Guianas, being the most abundant: Ammonia beccarii, Ammonia tepida, Eponides repandus, Fursenkoina schreibersiana, Hanzawaia ... -
Caracterización geoquímica de la balsa de lodos de la mina de San Quintín, Ciudad Real
(2009)The geochemical characterization of the San Quintín mine pond is the aim of this study. This kind of waste deposits represents large accumulations of reactive minerals and subsequently, emission sources of heavy metals ... -
Composición isotópica de gasterópodos en secuencias aluviales holocenas de Bardenas Reales (Navarra): implicaciones paleoambientales
(2009)Stable isotope composition of five species of gastropods from the Late Holocene alluvial record was studied in Bardenas Reales Natural Park (Navarre province) in order to deduce palaeoenvironmental information. Snails ... -
El fósil de plesiosaurio (Sauropterygia) más antiguo de la Península Ibérica: una vértebra procedente del Hettangiense-Sinemuriense de Asturias
(2009)In this paper, a pectoral vertebra of a plesiosaur is described. It comes from an exposure of the upper member of the Gijón Formation (lower Hettangian - basal Upper Sinemurian) in the coastal cliffs of the Villar hamlet ... -
Aplicación del análisis multi-espectral para el reconocimiento automatizado de menas metálicas
(2009)Traditional identification of ore minerals with reflected light microscopy relies heavily on the experience of the observer. Qualified observers have become a rarity, as ore microscopy is often neglected in today’s university ... -
Prospección hidrogeológica en zonas áridas de baja permeabilidad (Tifariti, Sahara Occidental) con el método EM de inducción
(2009)The aim of this study is to evaluate electromagnetic induction methods to analyze low permeability rocks in desert areas, as a tool for groundwater surveying. We have focused the field work in large faults zones, previously ... -
Aportaciones de un nuevo yacimiento de icnitas saurópodas de la Formación Camarillas (Barremiense inferior, Galve, Teruel)
(2009)Important sites of direct and indirect dinosaur fossils can see in the Galve area. This paper shows the sauropod footprint structures found in a new ichnite outcrop in the Cabezo de San Cristobal. The tracksite is situtated ... -
Anthropocene versus Holocene relative sea-level rise rates in the southern Bay of Biscay
(2009)Con el fin de evaluar la aceleración en el ascenso relativo del nivel marino durante el Antropoceno, se han comparado los resultados previamente establecidos para el siglo XX con los resultados obtenidos a partir del ... -
Consideraciones hidrogeoquímicas sobre el acuífero detrítico costero de Bou Ahmed (Marruecos)
(2009)The salinity of the waters of the detritic aquifer of Bou Ahmed (Morocco) is very diverse. Based on their hydrogeochemistry, two types of water have been differentiated. The less saline group of waters (electrical ... -
Reconstrucción paleoclimática del centro de la Península Ibérica durante los últimos 50 ka cal. BP, a partir de los datos físicos y geoquímicos del registro lacustre del mar de Fuentillejo (Campo de Calatrava, Ciudad Real)
(2009)Physical (magnetic susceptibility and gamma density measurements) and geochemical (TOC, Fe and Ti analysis) analysis were performed to characterize the sedimentary record in Fuentillejo maar-lake (Campo de Calatrava ... -
Contribución al conocimiento de la geología del depósito de Au-Cu de "La Pava" (Península de Azuero, Panamá)
(2009)The «La Pava» Au-Cu deposit is hosted by a vulcanosedimentary sequence, named Ocú Formation, developed in an island arc environment that resulted from the subduction of the Nazca Plate beneath the Caribbean Plate during ... -
Evolución sedimentaria y geoquímica del Lago de Estanya (Huesca) durante los últimos 21.000 años
(2009)The sedimentary and geochemical evolution of Lake Estanya (NE Spain) documents arid conditions, reflected by shallow water levels, high salinity and low organic productivity during lateglacial times, with intensified ... -
cf. Lirainosaurus sp. (Dinosauria: Titanosauria) en el Cretácico Superior de Sacedón (Guadalajara)
(2009)A fragment of a distal caudal vertebra that is assigned to a sauropod titanosaur is described. The fossil comes from an outcrop of the Villalba de la Sierra Formation in Sacedón (Guadalajara), which is considered to the ... -
Caracterización geoquímica y ambiente geodinámico de génesis de las metabasitas de la Sierra del Algarrobo (Cordillera Bética oriental)
(2009)The metabasites cropping out in the Sierra del Algarrobo have been studied from petrological and geochemical points of view. They consist of gabbros, dolerites and basalts, which were transformed into eclogites or ... -
Aplicación del método electromagnético de inducción ligera para el análisis de la permeabilidad en medios fracturados (granito de "El Berrocal", Sistema Central Español)
(2009)Fracture characterization in granites has been an important subject of study during these last years, by means of geological-structural cartography, hydrogeology and geochemical analysis. These works have been carried ...
