Browsing Geogaceta -- Nº 14, (1993) by Issue Date
Now showing items 1-20 of 47
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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 ... -
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 ... -
El Albense-Cenomanense del Pto. del Remolcador (Cordillera Ibérica, Maestrat, Castelló): secuencias deposicionales y biozonación con grandes foraminíferos
(Sociedad Geológica de España, 1993)Preliminary results of micropa/eontological and sequential studies of the thickest and most marine A/bian-Cenomanian series in the Iberian Ranges are presented. Numerous larger foraminifera indicate Late Albian, Vraconian ... -
Rasgos generales del relieve en el sector suroriental de la Sierra Almijara (Málaga)
(Sociedad Geológica de España, 1993)The morphostructural landform o f this Betics coastal sector is conditioned by lithological, structural (Neotectonics) and geomorphologicai features. Tortonian planated relief was faulting during Mio-Pliocene age by a NW-SE ... -
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 -
La zona de transición agua dulce-salmuera bajo el borde norte de la laguna salada de Fuente de Piedra (Málaga)
(Sociedad Geológica de España, 1993)The results of temperature and electrical conductivit y logs carrie dout in some recently drilled boreholes across the northern shoreline of the Fuente de Pledra Salt Lake, provid e the first data a bout a relative lythick ... -
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 ... -
Aplicación del análisis factorial (Modo-Q) a la clasificación de facies detríticas recientes en la plataforma continental de Cádiz
(Sociedad Geológica de España, 1993)The aplication of factor analysis (Q-mode), to surficial non consolidated sediment samples of the northern continental shelf at the Gulf of Cadiz, has allowed to establish simultaneously granulometrlcal and mineralogical ... -
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 ... -
Nota sobre las plantas fósiles del Mioceno de Epila (Zaragoza)
(Sociedad Geológica de España, 1993)Fossil plants from Epila village (Zaragoza province) at the Ebro Depression are described. Osmunda parschlugiana, Sabalites and undetermined monocotyledoneous are found in travertinic limestone of a supposed Lower-Middle ... -
Los piroxenos de las rocas graníticas de la Sierra de Guadarrama (S.C.E.)
(Sociedad Geológica de España, 1993)The pyroxenes are rarely observed in the granitic rocks from the Sierra de Guadarrama. The clinopyroxene only exists in the basic-intermediate types of cafemic calc-alkaline associations ( El Tiemblo, Almenara, Ventosilla, ... -
Organización secuencial del sector occidental del abanico costero de Sant Llorenç del Munt (Eoceno, cuenca de antepaís surpirenaica)
(Sociedad Geológica de España, 1993)The study of the relationships among facies belts in the Eocene Sant Llorenç d el Munt fan-delta complex allow sus to differentia te three orders of transgressive-regressive cyclicity . The basic building blocks are the ... -
Ciclo Soltaniense-Rharbiense (Pleistoceno Superior-Holoceno). Secuencias comparadas entre el SW de España y el NE de Marruecos
(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 ... -
Correlación litoestratigráfica de las evaporitas messinienses en las cuencas de Lorca y Fortuna (Murcia)
(Sociedad Geológica de España, 1993)The Messinian evaporite formations of Lorca and Fortuna basins may be linked along the exposures developed in the Guadelentín depression. Accordingly, the La Serrata Gypsum unit of the Lorca basin correlates with the "lower ... -
Características geoquímicas de las aguas de infiltración de la Cueva de Nerja (Málaga)
(Sociedad Geológica de España, 1993)152 water samples have been collected in three sites of the Nerja Cave aquifer system: (a) inside the cave, (b) in a nearby pumping well, and (c) in the Maro spring which is the aquifer's main discharge point. The analytical ... -
Nuevos datos sobre comprensión pleistocena en el extremo oriental del Algarve (Portugal)
(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 ... -
La desembocadura del río Ebro: variabilidad y cambios recientes
(Sociedad Geológica de España, 1993)Two years (1990/91) surveying the River Ebro Mouth system, has shown the relationship between fluvial dynamics and sedimentary forms. Two main situations,seem to be present: a sand spit during low fluvial regime,, and a ... -
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 ... -
Presencia de Cloritoide en las pizarras ordovícicas del sinforme de Alcañices (Zamora)
(Sociedad Geológica de España, 1993)In the present work we describe for the first time the presence of chloritoid associated with slates of Llanvirn-Llandellian age (Latedo Formation) o f the southern flank of the Alcahices Synform (Zamora). Usually this ... -
Relaciones entre la diagénesis orgánica y mineral en rocas madre de cuencas lacustres: cuenca terciaria de Ribesalbes
(Sociedad Geológica de España, 1993)Lacustrine carbonate sediments from the Tertiary Basin of Ribesalbes (Castellón, Spain) were studied with the aim of determining the relationships between organic and mineral diagenesis. Petrological and geochemical data ...