Thesis Collection
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Browsing Geogaceta -- Nº 40, (2006) by Issue Date
Now showing items 1-20 of 79
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Tafonomía cuantitativa del yacimiento de Cacela (Tortoniense superior; Algarve, Sur de Portugal)
(Sociedad Geológica de España, 2006)A quantitative taphonomic analysis were performed in the fossil assemblages of the late Tortonian of the lower-mid part of the Cacela Formation (Cacela, Algarve, S Portugal). Taphonomic results, together with sedimentological ... -
Sucesión de secuencias volcánicas félsicas en el Complejo Vulcanosedimentario de la Faja Pirítica Ibérica: discriminación entre modelos volcánicos y subvolcánicos
Donaire Romero, Teodosio
; Pascual Martínez, Emilio; Valenzuela Aznar, Alfonso; González Roldán, Manuel Jesús; Toscano Macías, Manuel (Sociedad Geológica de España, 2006)
A field study is presented on two selected areas in the Volcano-Sedimentary Complex (VSC) of the Iberian Pyrite Belt (IPB), the Odiel River section and the Paymogo Volcanic lineament. Field evidence has allowed to ... -
Plegamiento recumbente en la Serra do Galiñeiro (Pontevedra, NO España)
(2006)Three main deformation phases (D1, D2 and D3) have been identified in the Serra do Galiñeiro using macro and microstructural analysis. The geometric characterization of those showing macrostructural elements (D2 and D3), ... -
La Unidad Inferior e Intermedia de la Cuenca de Madrid en el valle del Henares (Provincia de Guadalajara)
(2006)The northeastern sector of the Madrid Basin shows a substantial succession of miocene materials that culminate with the so-called «páramo limestones». The purpose of this study is the identification and characterization ... -
Diagénesis y estratigrafía secuencial de la arenisca «U» de la Fm Napo del Oriente, Ecuador
(2006)The Napo Formation of Cretaceous age in the Oriente basin, Ecuador, is an important sandstone reservoir. The «U» sandstone is one oil interval within the Napo Formation. It is buried at a depth of 1500 m in the eastern part ... -
Los diques alcalinos de pórfidos monzo-sieníticos del Sistema Central Español: relación con los diques lamprofídicos acompañantes
(2006)The alkaline monzo-syenitic porphyries from the Spanish Central System (SCS) show a heterogeneous composition ranging from basic to acid terms which give rise to major and trace element compositional trends in accordance ... -
Estado actual de esfuerzos en Béticas y Alborán a partir del análisis de “breakouts”
(2006)Logging data from several onshore and offshore deep wells located at the South-Iberian Margin were selected to perform breakout analysis. Every data used to determine the orientation of breakouts come from magnetically ... -
Influencia de la orientación de la anisotropía en el desarrollo de shear bands: estudio experimental
(2006)Shear bands are geologic structures widely used as kinematic indicators. Despite the large amount of studies about these structures, their mechanical development is not yet well known. This work presents an experimental ... -
Petrografía de los carbones cantabrienses (Carbonífero sup.) del Grupo Cea de la Cuenca Guardo-Valderrueda (León-Palencia)
(2006)The petrographic analysis of the coals of Guardo-Valderrueda basin (Cantabrian Mountains) shows ranks varying from bituminous coals to meta-anthracite. Vitrinite Group dominates the maceral composition, with low Inertinite ... -
Caracterización morfo-estructural del borde occidental de Sierra de Gádor (Cordillera Bética)
(2006)An integrated geomorphic and structural study has been performed along the western border of Sierra de Gádor (Betic Cordillera, SE Spain). To do this, we have calculated some of the most reliable geomorphic indexes for ... -
Alteración diagenética en conchas de rudistas Monopleúridos del Complejo Urgoniano de Ereño (Aptiense – Albiense Inferior, Bizkaia)
(2006)Cathodoluminescence and microprobe analysis in monopleurid shells from Aptian – Lower Albian limestones in Ereño (Bizkaia) has allowed to us to realize that different rudist shells show different diagenetic responses in ... -
Estudio de paleotemperaturas en el Mar de Alborán entre 250 y 150 ka utilizando la técnica de los análogos modernos
(2006)Planktonic foraminifers from core ODP site 977a have been studied to estimate sea surface temperatures (SST) in the Alboran Sea between 245 and 145 kyr. Similar studies have been performed in this basin but only for the ... -
Petrología y mineralogía de los xenolitos mantélicos del volcán la Banya del Boc (Girona)
(2006)Type I mantle xenoliths enclosed in alkaline mafic lavas and pyroclastic materials from La Banya del Boc volcano are studied in order to assess the nature of the subcontinental lithospheric mantle in the Catalan area. ... -
Magma flow directions in Azores basaltic dykes from AMS data: preliminary results from Corvo island
(2006)Se presenta el estudio preliminar de flujo ígneo en diques basálticos de la isla de Corvo, (Azores), usando la técnica de la Anisotropía de la Susceptibilidad Magnética (ASM). Las muestras proceden de un total de 5 diques ... -
Estudio experimental de refuerzo de suelos con fibras sintéticas
(2006)This paper presents the results of a laboratory investigation of the mechanical behaviour of two cohesive soils, an expansive marl and a silty clay soil, reinforced with synthetic fibres. Results indicated that ... -
Caracterización sísmica del Anticlinorio del Bajo Segura (Alicante): Fallas del Bajo Segura, Torrevieja y San Miguel de Salinas
(2006)This paper presents a seismic characterization of the most important faults of the Lower Segura Anticlinorium. Available evidence of quaternary faulting, as well as the characteristics of the seismic record in the area, are ... -
Nueva localidad fosilífera en el Mioceno Inferior de Bargota (Navarra) (Cuenca del Ebro, Península Ibérica)
(2006)In this study we report a new fossil locality found in the continental sediments of the Haro Formation. This formation is composed of palustrine, lacustrine and distal alluvial facies that represent the sedimentary filling ... -
Composición y evolución de las lavas de la isla de Branco (Cabo Verde)
(2006)The first data about the composition of lava flows from Branco Island (Cabo Verde) are presented in this work. Most lava flows in the sequence are alkali basalts (Fo84-76 olivine, En44-36 diopside, An83-31 plagioclase) showing ... -
Variación estacional de las características texturales en los sedimentos intermareales del estuario de los ríos Tinto y Odiel (SO España)
López González, Nieves; Morales González, Juan Antonio; Borrego Flores, José; Carro Flores, Berta (Sociedad Geológica de España, 2006)
The seasonal evolution in the sediment textural characteristics along the Tinto and Odiel river estuaries has been studied by means of 12 sediment traps. The fine-grained material is associated with flocculation and ... -
El Edificio Antiguo de la isla de San Vicente (Cabo Verde): características del sector occidental
(2006)A more than 1000m thick pile of basaltic lava flows and pyroclasts dipping seawards rises on the western sector of San Vicente. Several systems of dikes cut across the succession that is composed of two different sequences. ...
