Geogaceta -- Nº 44, (2008)
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Transformación de andalucita a sillimanita en granitos peralumínicos del batolito de los Montes de Toledo: implicaciones petrogenéticas
(2008)The Montes de Toledo Batholith comprises several felsic peraluminous granitic plutons characterized by the presence of two Al2SiO5 polymorphous: andalusite and sillimanite (as fibrolitic variety). Textural features indicate ... -
Tectónica reciente en el frente de Cabalgamiento Bético. Las deformaciones de Jimena y Bedmar (Jaén)
(2008)In the area of Jimena-Bedmar, in the Guadalquivir basin, the northwards displacement of the External Betic units deformed the sedimentary Miocene infilling of the basin. Especially remarkable is an E-W anticline affecting ... -
Sistema de canales submarinos en una rampa de carbonatos templados, Cuenca de Sorbas, sureste de España
(2008)Temperate carbonates with abundant remains of braquiopods and bivalves deposited in a carbonate ramp developed at the northern margin of the Sorbas Basin during the latest Tortonian-earliest Messinian. Small submarine ... -
Secuencia paragenética del skarn de scheelita de Los Santos (Salamanca, NO España)
(2008)The Los Santos skarn shows several chemical and mineralogical features common to many other W-bearing calcic mesozonal reduced skarn deposits. Early exoskarn consists of hedenbergite (Hd82-87), grossular (Grs53- 73) and ... -
Rutilos ricos en Zr incluidos en granates de xenolitos granulíticos de la corteza inferior del Sistema Central Español: implicaciones geodinámicas
(2008)Two petrographic types of rutile are observed in the peraluminous felsic meta-igneous granulites, the most common type of the lower crustal xenolith suite of the Spanish Central System (SCS). Rutile-1 (Rt-1) corresponds ... -
Relaciones de campo y geoquímica de las carbonatitas de Esquinzo-Agua Salada, NW de Fuerteventura, Islas Canarias
(2008)Carbonatites are rather uncommon rocks, the origin of which still stands a subject of debate, especially regarding if they crystallize from primary carbonatitic melts from the mantle, or if they are generated, by some ... -
Reconstrucción paleoclimática de la plataforma continental gallega basada en datos geoquímicos y magnéticos
(2008)The study of the composition and provenance of the sediments from two cores from the Galician continental shelf (NW of the Iberian Peninsula) based on their textural, geochemical and magnetic properties has allowed us ... -
Variaciones en el registro isotópico del carbono en dos secciones de edad Aptiense inferior en la zona de transición entre el Subbético Externo y el Subbético Medio (Cordilleras Béticas, Provincia de Jaén)
(2008)The lower Aptian pelagic and hemipelagic sediments of the Carbonero Fm were deposited in the Southern Iberian Palaeomargin, within the transition between the External to Middle Subbetic palaeogeographic domains. The ... -
Reconstrucción de paleotemperaturas en el golfo de León durante los estadios isotópicos 6 y 7 utilizando la técnica de los análogos modernos
(2008)Planktonic foraminifer assemblages from core PRGL1-4 have been studied to reconstruct sea surface temperatures (SST) in the Gulf of Lions during Marine Isotope Stages 6 and 7 based on the modern analog technique. This ... -
Phase equilibrium modelling in the KFMASH system to show the Metamorphic Evolution of the Ceán Schists (Malpica-Tui Unit, NW Iberian Massif)
(2008)Para complementar los resultados obtenidos mediante termobarometría convencional (termómetro granatemoscovita y barómetros GRIPS y GASP) en los Esquistos de Ceán (López-Carmona et al., 2008) se ha construido una pseudosección ... -
Parasecuencias Transgresivo-Regresivas en un Cortejo Transgresivo: parte superior de la Fm Utrillas en Olleros de Pisuerga, Palencia
(2008)Field and borehole data demostrate that the well-known fluviatile Utrillas Fm of N Spain is part of the transgressive system tract of a major second-order sequence. However, the analysis of its upper part in the Olleros ... -
Palaeoceanographer, una herramienta informática para estimar características paleoceanográficas de las aguas marinas superficiales del Cuaternario y Neógeno superior
(2008)This work presents Palaeoceanographer as a new computer tool that we designed for palaeoceanographic studies. However, the software utility can be also extended to other scientific areas in which the aim is to carry out ... -
Nueva evidencia sobre la edad del tránsito endorreico-exorreico de la cuenca de Guadix-Baza
(2008)The Guadix-Baza basin was an endorheic continental basin during the Pliocene and part of the Pleistocene, later being captured by a tributary of the Guadaquivir River which would turn into the Guadiana Menor River. This ... -
Novedades paleontológicas del Ordovícico en el Parque Nacional de Cabañeros (Castilla-La Mancha)
(2008)Lower and Middle Ordovician rocks outcropping in the Cabañeros National Park (Central Iberian Zone) are being explored within a mapping project aimed at identifying geosites representative of the geological and paleontological ... -
Morfología de perfiles de ríos en roca. Control tectónico y significado evolutivo en el Bajo Guadiana
(2008)Bedrock rivers are increasingly becoming of interest due to their significance in controlling upstream entrenchment by fixing the base level. Longitudinal profiles are dependant not only of discharge but also on incision ... -
Microcodium en calizas del Eoceno Medio (Luteciense) de la Sierra de la Pila (Prebético Interno, Murcia)
(2008)Microcodium is a calcitic microfeature, mainly interpreted as root calcification products of terrestrial plants on carbonate-rich substrates, that is abundant in Paleogene successions of the peri-Tethyan realm. In the ... -
Los sulfuros masivos volcanogénicos de la Cuenca Lancones (Perú)
(2008)The Lancones basin is located on the north west coastal belt area of Peru, in the Department of Piura. It is bordered to the west by the Palaeozoic Amotapes coastal massif and to the east by the Western Andes pre-mountain ... -
Las «minas de agua» de Ciempozuelos (Madrid)
(2008)Ciempozuelos is located to the south of Madrid on the Miocene gypsum formations. From old times (XIV century or former) the water supply was made mainly by means of dug galleries (denominated «mines» of water). Given the ... -
High-pressure relics and structure of the Bou Azzer Neoproterozoic ophiolite (Anti-Atlas, Morocco)
(2008)La ofiolita de Bou Azzer marca la sutura del orógeno Pan-africano en el Anti-Atlas (Marruecos). En esta ofiolita se ha observado una paragénesis relicta de granate y rutilo, que sugiere un episodio inicial de alta presión. ... -
Geometría de cabalgamientos asociados a flancos normales de pliegues (N de Biescas, Zona Surpirenaica)
(2008)Paleogene rocks crop out in the South Pyrenean Zone as a flysch sequence of calcarenites and mudstones showing asymmetric south-verging chevron folds, with associated axial plane foliation. Thrust faults are generated ...