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Browsing Geogaceta -- Nº 32, (2002) by Issue Date
Now showing items 1-20 of 81
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El manto Iítosférico en el sureste de España: Aportaciones de los xenolitos englobados en rocas alcalinas del mioceno-plioceno
(Sociedad Geológica de España, 2002)Pliocene-Quaternary nephelinitic and alkali basaltic lavas and pyroclastic deposits from Cofrentes and Tallante and Miocene lamproitic lavas from Aljorra host xenoliths and megacrysts of lithospheric mantle origin. The ... -
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 ... -
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 ... -
Características geomorfológicas del sistema dunar de la Bahía de Alcudia (isla de Mallorca)
(Sociedad Geológica de España, 2002)The dunar system of the Alcudia Bay (Mallorca, Spain), organized into simple parabolic to compound complexes parabolic dunes from a predominant southward wind direction, can be divided in two areas of different parabolic ... -
Comparación de Metodologías de Cartografía en la Microzonación Sísmica
(Sociedad Geológica de España, 2002)Seismic Microzonation maps deals with the characterisation of the seismic risks at any of its items, hazards, vulnerability and the risk itself. In this work we are introducing focuses of two main targets, several microzonation ... -
Micropaleontología, Cronoestratigrafía y Sedimentología del límite Cretácico/Terciario en el NO de Cuba
(Sociedad Geológica de España, 2002)Several sections have been studied in western Cuba in order to date the sediments derived of the nearby Yucatan meteorite impact event. The sections of Peñalver, Minas, La Victoria, La Yuca, Santa Isabel, Cacarajicara and ... -
Secuencia de facies volcánicas en el área del río Odiel (Faja Pirítica Ibérica, España)
Valenzuela Aznar, Alfonso; Donaire Romero, Teodosio
; Pascual Martínez, Emilio (Sociedad Geológica de España, 2002)
We present a detailed study of a 10 km2 area located in the Odiel River, to the northwest of Zalamea la Real (northern flank of Riotinto antiform, Huelva), where we describe the main facies characteristics of a section of ... -
La modelización analógica como recurso didáctico en la geología estructural
(Sociedad Geológica de España, 2002)Analogue modelling has successfully simulated the progressive deformation of many geological situations. As such, it represents a powerful tool as a didactic resource in structural geology. The development of the web permits ... -
Caracterización de los materiales volcánicos asociados a las erupciones holocenas de La Caldera de Pinos de Gáldar y edificios volcánicos adyacentes (Gran Canaria)
(Sociedad Geológica de España, 2002)The holocene eruption of La Caldera de Pinos de Gaidar (2,830 years b.p.) is characterized by an strombolian cone, several lava flows of basanite composition and fall pyroclastic deposits. This volcano and other neighbour ... -
Características morfosedimentarías de las playas de la Ría de Vigo: influencia de las condiciones hidrodinámicas
(Sociedad Geológica de España, 2002)Morphological and sedimentary field data were collected in fourteen beaches of both sides of the Ria de Vigo. A profile was surveyed in each beach and two surface sediment samples were taken at the supratidal and intertidal ... -
Depósitos de tsunami en el valle de Agaete, Gran Canaria (Islas Canarias)
(Sociedad Geológica de España, 2002)Pleistocene marine conglomerates, first interpreted as alluvial-marine deposits, are attached to the walls of the valley of Agaete (NW of Gran Canaria), at 50-110 m above sea level. The deposits are 1 to 5 m thick, ... -
Carbonífero superior en la Cordillera Frontal (Provincia de San Juan, Argentina): características e implicaciones regionales
(Sociedad Geológica de España, 2002)Previous dating of the limestones at the upper part of the Agua Negra in the Quebrada de las Ánimas provided an unconclussive age of Silurian-Devonian. A palynological analysis has been carried out with the aim of improving ... -
Variaciones en la composición isotópica del Pb en galenas del área de Los Pedroches: diferencias entre los yacimientos de El Zumajo y Linares-La Carolina
(Sociedad Geológica de España, 2002)We report the results of Pb isotope analyses on representative galena samples from the El Zumajo quartz-rich dyke. This is a late intrusion within the Cardeha-Virgen de La Cabeza granite of the Los Pedroches Hercynian ... -
Edad de los domos sálicos de la isla de La Gomera
(Sociedad Geológica de España, 2002)The new radiometric data from felsic domes on La Comerá allow to separate two different felsic both intrusive and extrusive episodes on the island. The early one, upper Miocene in age, includes the domes on the eastern ... -
Estudio gravimétrico previo aplicado a la identificación de fallas ocultas como fuentes sismogenéticas en la Depresión del Guadalentín (Región de Murcia)
(Sociedad Geológica de España, 2002)A gravimetrical study has been carried out in the North-Eastern part of the Cuadalentin Depression (Betic Cordillera) in order to obtain the structure of the basement. From the distribution and orientation of the gravimetric ... -
Las aportaciones de José María Fúster Casas a la petrología y geología españolas
(Sociedad Geológica de España, 2002)During fifty five years professor José María Fúster Casas (1 923-2000) works in (Central) Complutense University of Madrid in Igneous and Metamorphic Petrology. He collaborates actively in introducing new petrological ... -
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 ... -
Generación de estructuras de carga y pseudonódulos asociados a la impresión de icnitas de grandes vertebrados continentales, posiblemente de dinosaurios, en el Jurásico superior y Cretácico inferior de Alpuente (Valencia)
(Sociedad Geológica de España, 2002)Some sinsedimentary cilindrical structures, in vertical position, are present in fluvial and beach deposits (Late Jurassic and early Cretaceous) wich outcrop in the Rambla de la Arquela, Alpuente (Valencia). Theese structures ... -
La ruptura de la plataforma carbonatada Iiásica en la Unidad de Jabalcuz (dominio intermedio, prov. de Jaén)
(Sociedad Geológica de España, 2002)The break-up of the lower Liassic carbonate platform (Fm Gavilán) in the Jabalcuz area records a variety of sedimentary models of this event. Two fracture phases related to the genesis of the Fm GavUán-top unconformity ... -
Los conglomerados y areniscas de la Iglesia de Olleros, infrayacente de la serie de Utrillas en la vertiente norte del Páramo de La Lora (Albiense superior, Cantabria y Palencia)
(Sociedad Geológica de España, 2002)The upper Albian Iglesia de Olleros conglomerates and sandstones, from the northern side of Paramo de La Lora (Cantabria and Palencia), rest unconformably on the underlying series and are directly below the Utrillas ...
