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Browsing Geogaceta -- Nº 26, (1999) by Title
Now showing items 1-20 of 31
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Análisis de la microfracturación en la Isla Decepción, Antártida Occidental
(Sociedad Geológica de España, 1999)The micro fracture patterns in Deception Island, an active shield volcano located in (he Bransfield Strait, Antarctic Peninsula region, are studied here for the first time. 143 faults have been measured in five sites ... -
Análisis integral (micropaleontología y sedimentologia) de un sondeo supramareal Holoceno en la ria de Gernika (Golfo de Vizcaya)
(Sociedad Geológica de España, 1999)The microfauna (foraminifers, ostracods) and sedimentology of a core from the supratidal polluted area of the Ria of Gernika (S of Bay of Biscay) have been analysed in this work. Four different episodes have been recognised ... -
Aplicación de imágenes satelitarias a la caracterización del macizo de Valencia del Ventoso
(Sociedad Geológica de España, 1999)Valencia del Ventoso Massif (MW), (south Badajoz, Spain), is a late-hercynical inversely zonated pluton, composed by a wide range of lithologies, from ultramafic to granitic rocks. Landsat TM images has been digitally ... -
Caracterización y evolución del paleocauce del río Guadalete en la bahía de Cádiz durante el cuaternario terminal
(Sociedad Geológica de España, 1999)Late Quaternary paleochannel and fluvial deposits characterization in the Bay of Cadiz have been carried out by geophysical, cores, and archeological data. They are located over alluvial deposits of regressive and lowstands ... -
Clasificación geomorfológica de los humedales y fondos endorreicos de La Mancha centro - occidental
(Sociedad Geológica de España, 1999)The existence of endorheic basins in La Mancha (Central Spain) is mainly related to climate (tendency towards drier conditions), and geology. According to geomorphic criteria, several types of wetlands and endorheic basins ... -
Datos preliminares sobre el megabentos de bivalvos del Jurásico Superior - Cretácico basal en el Cañón de San Matías (Zacatecas, México)
(Sociedad Geológica de España, 1999)The present contribution shows the first approach to the interpretation of precise stratigraphic horizons containing megabenthic fossil assemblages made of Upper Jurassic - lowermost Cretaceous bivalves in México. This is ... -
Depósitos de ápice de abanico (Terciario de la Cuenca del Tajo, Madrid): sedimentología y controles sedimentarios
(Sociedad Geológica de España, 1999)The topmost alluvial deposits that outcrop adjacent to Central System igneous rocks are arranged in two units with particular internal architecture. The lower unit consists of ten bodies laterally disposed and bounded by ... -
Depuración de aguas residuales mediante técnicas no convencionales: el filtro verde de Patones (Madrid)
(Sociedad Geológica de España, 1999)The land applications are appropriate systems for the purification of domestic wastewaters, of small rural populations. Their efficiency is high and if their management is suitable, they can provide an economic benefit ... -
El Cretácico terminal y paleoceno dé lá Sierra del Carche (dominio prebético, Jumilla). Caracterización estratigráfica y sedimentológica
(Sociedad Geológica de España, 1999)The mid Campanian to Paleocene section ih Sierra del Carche (jumilla, Prebetic Domain, SE Spain) consists of 125 meters of carbonates and marls deposited in open platforrh environments. Facies analysis Of these rocks ... -
El metamorfismo de alta presión-baja temperatura en los esquistos de Filali-Benzou (Sébtides, Marruecos) Termobarometría con la asociación cloritoide-granate-fengita
(Sociedad Geológica de España, 1999)The paleozoic schist rocks of Benzou outcrop in the core of the Beni Mzala's antiformal stack (Upper Sebtides units). In these schist rocks, we have found the association garnet (XFe=0.89-0.94), chloritoid (XMg=0.12-0.22), ... -
Estudio de los materiales pétreos del patrimonio histórico de Olmedo (Valladolid)
(Sociedad Geológica de España, 1999)This work studies the building materials used in the monuments of Olmedo. The mineralogical, textural and physical characteristics of the stone used in the Madre de Dios convent and in the Romanesque doorways of the Santa ... -
Estudio por microscopía electrónica de transmisión de saponita activada
(Sociedad Geológica de España, 1999)This work studies the modifications undergone by the Creen Clays Saponite in the Tagus Basin subjected to activation treatments, and stresses the influence of the development of the electronic microscopy technique for ... -
Evolución estratigráfica de los afloramientos septentrionales de la Formacion Sariñena (provincia de Huesca, España). Síntesis paleogeográfica
(Sociedad Geológica de España, 1999)Stratigraphicaí characterization óf the tertiary materials of Sariñena Fm. outcropping in the northern limb of the Barbastro Anticline (Huesca province) allows to increase the knowledge existing about the septentrional ... -
Foraminíferos bentónicos holocenos del talud de Guyana y Surinam (Atlántico Central): su relación con las masas de agua
(Sociedad Geológica de España, 1999)The study of two sedimentary Holocene cores from the upper slope of Cuianas (Central West Atlantic) allows for the identification of 139 species of benthic foraminifers. This microfauna is similar to those identified in ... -
Hidrogeoquímica y microbiología en Los Hervideros del Campo de Calatrava (Ciudad Real)
(Sociedad Geológica de España, 1999)CÓZ-rich springs and wells in the Campo de Calatrava commonly are named Hervideros. This .ground water is originated by deep circulation along the fractures of the paleozoic rocks of the area, with residence times ... -
La fracturación en el Cabo Shirreff, Isía Livingston, Antártida Occidental
(Sociedad Geológica de España, 1999)The Cape Shirreff, located in the northern part of Livingston Island, South Shetland Islands, represents one of the points of this island arc adjacent to the related trench. Here outcrop a volcanic succession with, probably, ... -
La glaciación del límite Ordovícico-Silúrico en el Altiplano de Perú: evidencias e implicaciones tectónicas
(Sociedad Geológica de España, 1999)The Lower Paleozoic strati graphic sequence cropping out immediately to the north of Ayaviri (Peruvian Altiplano) belongs to the Eastern Cordillera tectonostratigraphic domain, and includes the Sandia, San Gabán and Ananea ... -
La roca de Getafe: trayectoria de caída, efectos del impacto y marcadores morfotexturales de vuelo
(Sociedad Geológica de España, 1999)On 21st June, 1994, at approximately 12 noon local time, a rock, weighing 1.417 kg and measuring 18 x 8.5 x 8 cm, struck a car, which was travelling south on the Madrid-Andalucia róed (Cetafe city, south .Madrid). This ... -
Las doleritas neoproterozoicas de las ventanas de Agadir Melloul y del Adrar Izazen (Anti-Atlas Central, Marruecos). Restos de una distension pre-panafricana
(Sociedad Geológica de España, 1999)Two swarms of diabasic dykes wich différents directions NE-SW and NW-SE cut the socle of Agadir Melloul and the Adrar Izazen neoprotero/.oic windows. This rocks show a hidrothermal transformation simultanely wich Pahafricàn ... -
Litoestratigrafía de la formación El Hoyo (zona de Ossa-Morena, Macizo Ibérico, España)
(Sociedad Geológica de España, 1999)The El Hoyo Formation js located at the boundary: between the Obejo-Valsequil/o-Puebla de la Reina Domain and the Badajo/.-Córdoba Shear Belt. This serie is composed by quartz-schists and mica-schists, finé grained quartzites, ...
