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Browsing Geogaceta -- Nº 30, (2001) by Issue Date
Now showing items 1-20 of 61
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Metales pesados en sedimentos contaminados: Variabilidad espacio-temporal en la ría de Bilbao
(Sociedad Geológica de España, 2001)Several samples ofsurficial sediments were collected in two polluted sites of the Bilbao estuary In order to study the spatial (on a metric scale) and temporal variability of the contents of heavy metals and As. A decline ... -
Nuevas icnitas de dinosaurios terópodos y saurópodos en Galve y Miravete de la Sierra (Teruel. España)
(Sociedad Española de Geología, 2001)Five new Theropod and Sauropod dinosaur footprint associations (RB, 1.1MV, 1.2MV, 2.1MV, 2.2MV), from three new sites (RB, 1MB, 2MB) in the Teru4l province, have been studied. The Theropod dinosaur footprints from the RB ... -
Estudios preliminares sobre las estructuras diagenéticas tipo "cone-in-cone" y nodulos septariformes de la Formación Escucha en Estercuel (Teruel)
(Sociedad Geológica de España, 2001)The present contribution shows the first dates of study carried out in the Lower Cretaceous of Iberian Range (Estercuel, Teruel). This is a preliminary report focused on the analysis of diagenetic structures, septarized ... -
Modificaciones diagenéticas en la microestructura de los inocerámidos (Bivalvia) de la Formación de Plentzia (Santóniense, Arco Vasco)
(Sociedad Geológica de España, 2001)noceramid shells, from the Santonian of the Basque Arc, have been tested to determine the preservation of their original prismatic microstructure formed by low magnesium calcite (LMC). Petrography and cathodoluminescence ... -
Caracterización mineralógica y química de la granodiorita de Los Pedroches en la zona de cizalla dúctil de Conquista
(Sociedad Geológica de España, 2001)The northern edge of Los Pedroches granodioritic pluton is deformed by the Conquista fault, a right ductile shear zone with a normal component. Consecuently, the rocks of this sector show gradual texture-structural ... -
Reconstrucción paleoambiental del tránsito Cretácico-Terciario en La Lajilla (México) con foraminíferos
(Sociedad Geológica de España, 2001)Upper Maastrichtian and lower Danian sediments belonging to the Méndez and the Velasco formations, respectively, contain abundant foraminifera at La Lajilla section (northeastern México). Foraminifera! turnover across the ... -
Descripción e interpretación del depósito de debris avalanche del barranco de San Miguel, Gran Canaria
(Sociedad Geológica de España, 2001)The San Miguel ravine is located at the East part of Gran Canaria island (Canary Islands). On its middle part there is a debris slide deposits of breccia material and megablocks of several volcanic lithologies. It is ... -
La geometría fractal de los bordes de grano del cuarzo como geotermómetro: Aplicación a la Zona de Cizalla Dúctil Extensional de Santa María de la Alameda (Sistema Central)
(Sociedad Geológica de España, 2001)Principles of fractal geometry have been applied to the description of quartz grain borders and to the assessment of deformation temperature in milonitic rocks at the Santa Maria de la Alameda Ductile Shear Zone (Central ... -
Estudio y restauración de yacimientos paleoicnológicos en Villosiada de Cameros (La Rioja. España)
(Sociedad Geológica de España, 2001)The more western dinosaurs footprint sites foud in La Rioja are described. Despite being the oldest, there are theropod, ornithopod and sauropod dinosaur traces. Because of their decay levels, the restoration of one those ... -
Morfodinamica en un complejo playa-ría bajo condicionantes antrópicos. Oyambre, Cantabria
(Sociedad Geológica de España, 2001)The beach-ria system of Oyambre (Cantabria) has been controlled during one year; in order to establish changes in morphodynamics. Twenty profiles have been surveyed every two months and the erosion-sedimentatlon rates have ... -
Contexto tectónico del "Parque Natural de las Lagunas de Ruidera" (acuífero del Campo de Montiel)
(Sociedad Geológica de España, 2001)The spatial distribution of the drainage pattern, the subsurface flow and the maximum values of transmisivity in the aquifer of El Campo de Montiel, as well as the localisation of the springs of the Lagunas de Ruidera, can ... -
Caracterización petrológica y geoquímica de los granitos metaluminosos tardíos del dominio continental de la banda metamorfica de Aracena (Macizo Ibérico meridional)
Díaz Azpiroz, Manuel; Castro Dorado, Antonio
; Fernández Rodríguez, Carlos (Sociedad Geológica de España, 2001)
Several late leucogranite small plutons appear in the high grade zone of the continental domain (CD), in the Aracena metamorphic belt (AMB). These leucogranites cross-cut the structures due to the main tectono-metamorphic ... -
Kinematic indicators and mineralization on the Elgoibar faul (Basque-Cantabrian Basin)
(Sociedad Geológica de España, 2001)The Elgoibar fault is interpreted the western prolongation of the Leitza fault, wich has been usually considered the boundary between Iberia and Europe plates. Based on new structural data from a mineralized fault zone ... -
Calizas oolíticas entre facies pelágicas en el Jurásico medio de Iznájar (Prov. de Córdoba, Subbético): significado paleogeográfico y paleobati métrico
(Sociedad Geológica de España, 2001)On the top of the Zegrí Fm (Aalenian-Bajocian) oí the Median Subbetic in the Iznajar area (south of the Córdoba province) oolitic limestones outcrop, interbedded between pelagic facies. These oolitic limestones were ... -
Evidencia de un pequeño impacto meteorítico en Extremadura: El «volcán» de El Gaseo (Las Hurdes)
(Sociedad Geológica de España, 2001)A small outcrop of pumice-like rocks in northern Ciceres province (Extremadura, Spain) is totally unrelated > to Cenozoic volcanism in the whole Iberian Peninsula. Microscope petrography, SEM-EDX, and XRD studies reveal ... -
Cartografía y petrografía de un sector del sistema filoniano N120-130E asociado al batolito de Los Pedroches (Córdoba, Zona Centro-Ibérica)
(Sociedad Geológica de España, 2001)The Los Pedroches batholith (Iberian Massif, SW Spain) is composed by a large granodioritic intrusion and smaller monzogranitic plutons. This batholith is cross cut by a dyke complex of lamprophyres, trachyandesites, ... -
Los plutones de Sotillo y Ribadelago, (Sanabria, Zamora) ejemplos de intrusiones laminares en la zona de relevo de una zona de cizalla dextra transpresiva
(Sociedad Geológica de España, 2001)The Ribadelago and Sotillo plutons are located in the Central Iberian Zone, a tectonic domain of the Iberian Variscan belt (NW Spain). These synkinematic granitoids are composed by swarms of sheeted intrusions parallel to ... -
Consideraciones petrogenéticas sobre el plutón de Cardeña-Virgen de La Cabeza (batolito de Los Pedroches, España) a la luz de los datos experimentales
(Sociedad Geológica de España, 2001)The Cardena-Virgen de La Cabeza pluton is an high-K peraluminous granitoid wich forms a part ot the Los Pedroches batholith (Central Iberian Zone). Taking account the chemical features of its major elements and comparing ... -
Restos de elefante (Proboscidea, Mammalia) en el Pleístoceno de Obón (Cordillera Ibérica, Teruel)
(Sociedad Geológica de España, 2001)An elephant tusk has been found in a fluvial terrace of a small creek affluent of the Martin river. The tooth is slightly curved, almost round in section and becomes increasingly smaller towards the tip. The specimens ... -
Rodingitización y formación de pectolita en diques graníticos de las Peridotitas de Ronda (Cordilleras Béticas, España)
(Sociedad Geológica de España, 2001)This work reports the local occurrence of rodingites formed from granitic dykes intrusive in the Ronda Peridotites. Representative mineral assemblages include chlorite, hydrogrossular, and prehnite but also pectolite, and ...
