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Browsing by Author "Arenas, R."
Now showing items 1-16 of 16
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Características del metamorfismo hidrotermal del Complejo Plutónico de la Caldera de Taburiente (La Palma, Canarias)1987
(Sociedad Geológica de España, 1987)The Plutonic Complex cropping out in the Caldera de Taburiente is affected by a marked hydrothermal metamorphism, whose metamorphic peak conditions were reached in the upper-T part of the greenschist facies. A later ... -
Coronitic metagabbros from the Sobrado Unit (Órdenes Complex, NW Iberian Massif). I: Geological setting and mineral assemblages
(Sociedad Geológica de España, 2002)HP-HT unit exposed in the core of the Sobrado tectonic window (Órdenes Complex, NW Iberian Massif) contains a lithological ensemble of arc affinity, affected by Lower Ordovician metamorphism and which reached highest ... -
Coronitic metagabbros from the Sobrado Unit (Órdenes Complex, NW Iberian Massif). II: Thermobarometry and P-T path
(Sociedad Geológica de España, 2002)Three types of corona textures developed in metagabbros of the Sobrado Unit. Detailed thermobarometry, carried out in groups II and III coronas, together with inferred P-T conditions for group I coronas, show that the ... -
Deformación extensional de las unidades alóctonas superiores de la parte oriental del Complejo de Ordenes (Galicia)
(Sociedad Geológica de España, 1991)A penetrative extensional tectonics, which includes the existence of three important detachments, has been identified in the Sobrado area, in the eastern margin of the Ordenes Complex. It is related to the extensional ... -
Descripción y resultados preliminares del plutón compuesto de San Xiao, Complejo de Cabo Ortegal (noroeste del Macizo Ibérico)
(Sociedad Geológica de España, 2002)The San Xiao composite pluton is a small body intruded in a metasedimentary formation of the Cabo Ortegal Complex upper units, the Cariño Gneisses. In spite of its size, it exhibits spectacular evidence of magma mingling ... -
Estructura y metamorfismo del Macizo Hercínico de Rehamna (Meseta Occidental, Marruecos)
(Sociedad Geológica de España, 1995)The structure of the Rehamna Massif, in the Moroccan Hercynian Belt, can be related to the development of a first compressive regime followed by another one of extensional character. The Skhour Nappe and Eastern Rehamna ... -
Evidencias metamórficas y estructurales de extensión tardiorogénica hercinica: el ejemplo del Domo Gneisico del Tormes (NO Salamanca)
(Sociedad Geológica de España, 1994)The tectonothermal Variscan evolution of the Tormes Gneiss Dome is controlled by a subhorizontal ductile shear zone of crustal scale and extensional characteristics, that induced a quick exhumation of the deep parts of the ... -
Evolución metamórfica de los esquistos con Grt-St-Ky del antiforme de Arinteiro (Complejo de Órdenes, noroeste del Macizo Ibérico)
(Sociedad Geológica de España, 2002)The Órdenes Series in the Arinteiro anti form are generally Grt-St-Ky schists which exhibit a regional schistosity (SJ and a metamorphic peak mineral assemblage with Qtz-Pl-Ms-Bt-Grt-Ky-Rt-llm. Some garnets show a distinctive ... -
Evolución tectonotermal de la Unidad de Santiago (Complejo de Ordenes): un ejemplo de subducción eo-hercín¡ca y descompresión sin-colisional
(Sociedad Geológica de España, 1992)The syn-D2 uplift of the Santiago Unit, inmediately after of the high-pressure eo-Hercynian metamorphic event, cause a markedly decompressive-slightly prograde P,T,t path. This path very likely suggests that the majority ... -
Evolución tectonotermal del Macizo Hercínico de Rehamna en la región de Skhour - Ouled Hassine - Lalla Tittaf (Meseta Occidental, Marruecos)
(Sociedad Geológica de España, 1995)In the Rehamna Massif, In the Moroccan Hercynian Belt, metamorphic peak conditions in the LI - T part o f the amphibolite facies were reached during the development o f a intermediate P/T - barrovian like - metamorphism, ... -
Metapelitas de alta presión de la Unidad de Santiago (Complejo de Ordenes, NO del Macizo Ibérico)
(Sociedad Geológica de España, 1992)A high - pressure - low - to intermediate temperature eo - Hercynian metamorphic event characterizes the tectonothermal evolution of the Santiago Unit, in the western margin of the Ordenes Complex. P-T conditions fo r the ... -
Nueva interpretación petrológica y tectónica de las anfibolitas pobres en calcio del antiforme de Arinteiro (NO del Macizo Ibérico). I: Descripción de las anfibolitas pobres en calcio y rocas asociadas
(Sociedad Geológica de España, 2002)Ca-poor amphibolites are characterized by unusual mineral assemblages, and they can be related to different tectonic settings. In this work we describe the amphibolites that outcrop in the Arinteiro massif. In this massif, ... -
Nueva interpretación petrológica y tectónica de las anfibolitas pobres en calcio del antiforme de Arinteiro (NO del Macizo Ibérico). II: Estructura e implicaciones para la génesis de anfibolitas pobres en calcio
(Sociedad Geológica de España, 2002)The Arinteiro massif has a complex structure which includes shear zones, recumbent folds, thrusts and upright folds. Ca-poor amphibolites occur associated with the shear zones, although there is some controversy about the ... -
Subduction and syn-collisional exhumation of a Paleozoic continental margin: an integrated study based on structures and P-T paths of the Basal Units in the Ordenes Complex (Galicia, Spain)
(Sociedad Geológica de España, 1996)According to their metamorphic evolution, the Basal Units of the Galician Allochthonous Complexes are thought to represent a part of the margin of the Paleozoic Gondwana, subducted at the onset of the Variscan Orogeny. ... -
Tectonic setting of the Monte Castelo Gabbro (Ordenes Complex, NW Iberian Massif)
(Sociedad Geológica de España, 2002)En el Complejo de Ordenes (NW del Macizo Ibérico) la unidad tectonoestratigráfica superior está constituida por una potente secuencia metasedimentaria (Serie de Ordenes), intruida por ortogneises y gabros. El Cabro de Monte ... -
Termobarometría núcleo-borde en granates con zonado difusíonal: El ejemplo del Domo Gneísico del Tormes, NO de Salamanca
(Sociedad Geológica de España, 1996)Metapelites and add orthogneisses from the Lower Unit of the Tormes Gneissic Dome, NW Salamanca, contain high-grade mineral assemblages with characteristics diffusional zoned garnets, The P-T path deduced for this unit ...
