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Browsing Geogaceta -- Nº 14, (1993) by Issue Date
Now showing items 1-20 of 47
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Estructuración sedimentaria de los cuerpos deltaicos holocenos del margen septentrional del mar de Alborán
(Sociedad Geológica de España, 1993)In three deltaic areas of northem Alboran Sea margin, the different depositional bodies that establish the sedimentary structure of the holocene progradational wedge has been determinated by high resolution seismic profile ... -
Geomorfología de la península del Cabo Shirreff. Isla Livingston. Shetland del Sur. Antártida
(Sociedad Geológica de España, 1993)The geomorphological exploration and mapping of Cape Shirreff area was carried out during the 1992/93 Spanish Antartic Expedition in Livin gston Island. In this area two main systems of lanforms were recognized. A) Marine ... -
Estaurolita rica en Zn en las metapelitas de bajo grado de la Unidad de Salobreña (Complejo Alpujárride)
(Sociedad Geológica de España, 1993)Zn-rich staurolite has been found in a metapelite rock with low-grade metamorphic assemblage, in the Salobreña Unit (Alpujárride Complex, Betic Cordillera). The chemical composition (4-6 wt.% ZnO) and the textural relationships ... -
Evolución de la dinámica sedimentaria reciente en la plataforma continental septentrional del Golfo de Cádiz
(Sociedad Geológica de España, 1993)The study of the present granolumetric facies plot of surficial sediment sample and high resolution seismic profile analysis, allow us to establishment the general aspects of the Holocene sediment dynam ic evolution in the ... -
Estudio preliminar sobre las facies volcaníclásticas de la Formación Zamoranos (Trías Subbético)
(Sociedad Geológica de España, 1993)In some outcrops o f the Trias o f facies Keuper in the Central Subbetic Zone has been defined the Zamorano Formation, dated as Norian. In this formation is possible to identify conglomerates with pebbles of different ... -
Estructura general de la corteza en una transversal del Mar de Alborán a partir de datos de sísmica de refracción-reflexión de gran ángulo. Interpretación geodinámica
(Sociedad Geológica de España, 1993)Results from three seismic refraction/wide-angle reflection profiles across the Alborán Sea outline a general structure of the crust, wich can be related to a detachment, simple shear, model of extension -
Fallas de despegue extensional miocenas en el área de Sierra Tejeda (Béticas centrales)
Alonso Chaves, Francisco Manuel
; García Dueñas, V.; Orozco, Miguel (Sociedad Geológica de España, 1993)
In the Sierra Tejeda area, NE Malaga, the existence of detachments and low angle normal faults has been recognized. The faults developed during three Miocene extensional events of AquitanianBurdigalian, probably Langhian ... -
Influencia de las evaporitas de borde en la hidrogeoquímica del acuífero de la Vega de Granada
(Sociedad Geológica de España, 1993)The influence of the input of saltwater on the chemistry of the Vega de Granada aquifer is studied. The three main areas of saltwater pollution are defined in addition to discussing the origin of the different waters -
La geología marina desde la perspectiva del Instituto Español de Oceanografía
(Sociedad Geológica de España, 1993)The "Instituto Español de Oceanografía" (Spanish Oceanographic Institute) is a body of the "Ministerio de Agricultura, Pesca y Alimentación" (Food and Fisheries Department). It engages in research in many oceanographic ... -
El sistema NW-SE de fosas de Rosas y Bagur (margen continental nororiental de España)
(Sociedad Geológica de España, 1993)An analysis ofmultichanell seismic profiles leads to define the main fracture zones in the northeastern continental margin of Spain. Two fault systems have been mapped: I) NE-SW to N-S that defines a classical extensional ... -
Determinación de velocidades de flujo en acuíferos carbonatados alpujárrides mediante ensayos de dilución
(Sociedad Geológica de España, 1993)We have used the single borehole method for calculating the Darcy velocity in carbonate aquifers of diffuse flow system type. The tests have been based on the labelling of the whole water column in piezometers with a saline ... -
El Albense - Cenomanense medio de la Sierra de Altomira
(Sociedad Geológica de España, 1993)The Cretaceous transgression in the Sierra de Altomira starts with sandy (Utrillas Fm.) and dolomitic sediments (Villa de Ves Mb.), its detailed sequential analysis allow the recognition of five depositional sequences with ... -
Caracterización geoquímica de los depósitos ferromanganesíferos de Las Herrerías (SE Ibérico)
(Sociedad Geológica de España, 1993)Various types of ferromanganese deposits, of Upper Miocene age, form part of the Las Herrerías mineralization (Betic Cordillera, SE Spain): Oxidized beds, crusts, hydrothermal pipes and brecciatype structures, thin layers ... -
Corte balanceado de la Sierra Cantabria (cabalgamiento de la Cuenca Vasco-Cantábrica sobre la Cuenca del Ebro)
(Sociedad Geológica de España, 1993)On the transversal of Puerto de Herrera (Alava), the southern limit of the Basque-Cantabrian basin thrusts on the Ebro basin in favour of two thrusting sequences. The minimum shortening measured exceeds 35% with a 3.25 ... -
Datos preliminares sobre la geología de la isla Elobey Grande (Guinea Ecuatorial)
(Sociedad Geológica de España, 1993)The stratigraphic section of the island Elobey Grande in the Republic of Equatorial Guinea is briefly described. All the samples analized present tipical characteristics of the post-rift of the Equatorial Atlantic continental ... -
El Terciario de la unidad de Saaden ("Dorsal" externa, Rif Septentrional, Marruecos)
(Sociedad Geológica de España, 1993)In the Saaden unit (External "Limestone Chain", northern Internal Rif), the uppermost Eocene and the Oligocene have been dated by planktonic foraminifera. It confirms that an important transgression accounted during the ... -
Ciclo Soltaniense-Rharbiense (Pleistoceno Superior-Holoceno). Secuencias comparadas entre el SW de España y el NE de Marruecos
Díaz del Olmo, Fernando; Borja Barrera, Francisco (Sociedad Geológica de España, 1993)
An identification of the Soltanian (Upper Pleistocene) and Rharbian (Holocene) sequence in the Cadiz coastal is made in comparatidn with those of the Morocco coast, throwing de presence of "rubified de posits" of the upper ... -
Middle Miocene extensional faulting events and Alpujarride Units in the Central Betics
(Sociedad Geológica de España, 1993)In the Central Betics, the Alpujarride Complex is made up of units which result from the dismembering of pre-Miocene fold nappes during a Late Burdigalian (?)-Langhian extensional event -
Nuevos datos sobre comprensión pleistocena en el extremo oriental del Algarve (Portugal)
Flores Hurtado, Enrique; Rodríguez Vidal, Joaquín; Cáceres Puro, Luis Miguel (Sociedad Geológica de España, 1993)
The end of the Pliocene was characterized by a return to the compressive regime throughout the southern of the Iberian peninsula. Quaternary deformations are intense in places and correspond to folds and occasionally ... -
Presencia de mineralogías ricas en Zn como evidencias de la actividad hidrotermal enzonas de cizalla extensionales (Complejo Nevado-Filábride, Béticas)
(Sociedad Geológica de España, 1993)Late Zn-rich assemblages have been found in several lithilogies of the Bédar-Macael unit and upper part of the Calar-Alto unit (Nevado-Filabride Complex). The nowadays brittle contacts between the nevado-filábride and ...
