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Browsing Geogaceta -- Nº 05, (1988) by Title
Now showing items 1-20 of 27
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La ankeritización en las dolomías del Aptiense en el entomo de las mineralizaciones Pb-Zn en el NO de Cantabria
(Sociedad Geológica de España, 1988)The study of iron content in dolomites from northwestern Cantabria is used to know the ankeritization degre in dolomites but also the biggest or lowest proximity to Pb-Zn mineralization, provided that these mineralizations ... -
Biohermos de esponjas y estromatolitos en la secuencia transgresiva oxfordiense de la Sierra de Cazorla
(Sociedad Geológica de España, 1988)The Middle and Upper Oxfordian transgressive depositional sequence of Sierra de Cazorla, shows some sponge-calcareous stromatolite bioherms grown on a pelagic shelf (homoclinal ramp type). The geographical and temporal ... -
Braquiópodos del Carbonífero Medio del corte de la Playa de La Huelga (Asturias, NW de España)
(Sociedad Geológica de España, 1988)The Middle Carboniferous (Upper Bashkiran-Moscovian) at the La Huelga beach section is represented by more than 1500 m of almost exclusively calcareous deposits. The abundant brachiopods supplied by this series allow to ... -
Los castores del Pleistoceno medio de Atapuerca (Burgos, España)
(Sociedad Geológica de España, 1988)This work is a description of the Castor fiber fossils remains found in the Karst fillings of Atapuerca (Burgos, Spain) -
El Cretácico superior de la Sierra de las Moratillas (Prebético externo. Murcia)
(Sociedad Geológica de España, 1988)Nine litostratigraphic units are described in late Cretaceous of Sierra de las Moratillas (Murcia, Prebetic zone). Most of them find their equivalent inside Southern Iberian Ranges, others show little differences and just ... -
Las deformaciones hercinianas tardías en la región de Santa María la Real de Nieva (Sistema Central Español)
(Sociedad Geológica de España, 1988)The precambrian and paleozoic materials of Santa María la Real de Nieva outcrop has been affected by two Hercynian shear systems which developed after the main deformation phases and the intrusion of the granite rocks. The ... -
Deformaciones recientes en el extremo nororiental de la Cuenca de Baza (Cordilleras Béticas)
(Sociedad Geológica de España, 1988)Neotectonic deformations are presents in two areas from the Baza Basin (Betic Cordillera): Cuevas del Campo area and the Orce-Galera-Huescar triangle. In this work we analyse the main movements from Upper Pleistocene to actuallity -
Edad de las formaciones travertínicas del flanco meridional de la Sierra de Mijas (provincia de Málaga, Cordilleras Béticas)
(Sociedad Geológica de España, 1988)Three masses of travertines located on the southern flank of the Sierra de Mijas (Betic Cordillera) have been dated by absolute dating methods: E.S.R. and Uranium Series (ThU). The results relates the age of travertines ... -
Estructura interna del sistema deposicional de Sant Marti Xic
Barnolas, Antonio; Samsó, Josep Maria; Serra Kiel, Josep; Tosquella Angrill, Josep
(Sociedad Geológica de España, 1988)
The depositional facies and parasequences of the Sant Marti Xic high stand depositional system are characterized. The internal structure of the system is controlled by these parasequences: thin transgressive facies with ... -
Las facies de plataforma carbonatada del Jurásico inferior y medio en la Sierra de Cazorla (Zona Prebética)
(Sociedad Geológica de España, 1988)The Lower and Middle Jurassic sediments of the Prebetic Zone correspond to the first phase of development of a shallow-water platform. They constitute a transgressive depositional sequence containing some minor ... -
Factores intrínsecos que condicionan la alteración de la arenisca de la Colegiata de Santillana del Mar (Cantabria)
(Sociedad Geológica de España, 1988)The petrographical characteristics and sorne physical properties of the sandstone used in the construction of the Cloister of the «Colegiata» of Santillana del Mar (Cantabria, Spain), are studied in order to establish the ... -
Fase Robledo: Una etapa distensiva dúctil en la Cordillera Central
(Sociedad Geológica de España, 1988)Shear with SC planes are found in the same locations among the gneises and other metamorphic rocks in the Central Cordillera. They are a ductil tectonic extensional episode (Robledo Phase) with SE-NW dipping C shearing ... -
Fosfatos de Mn-Fe con Li en el área pegmatítica del Cap de Creus (Cataluña)
(Sociedad Geológica de España, 1988)Lithium-bearing phosphates have been recently discovered in the albitic facies of the pegmatitic field of Cap de Creus. New metallogenetic possibilities are, hence, expected in the Eastern Pyrenees -
Fracturación en los metápodos de Hipparion
(1988)The fractures observed in a sample of 96 fossil metapodes of Hipparion are studied in this paper. The specimens come from several sites of different Cenozoic basins of Spain. All the bones but one have at least one ... -
Gabros coroníticos en el macizo cristalino de Toledo
(Sociedad Geológica de España, 1988)The Bastida gabbros massif is formed by olivine norites and piroxene gabbronorites. The metamorphic conditions are those of the intermediate to Iow pressure granulite facies, producing the coronitic texture that exhibit ... -
Interferencia de plegamientos alpinos en el tercio occidental del Arco Vasco (Cuenca Vasca)
(Sociedad Geológica de España, 1988)On the occidental part of the Basque Arch (Basque Bassin), the Trias Keuper outcrops network deal With the intersection of a pre-Albian «en echelon» folding With the tertiary alpine deformation -
Una modificación al modelo genético para la Formación Molicias (Tortoniense superior, Depresión de Guadix, S de España)
(Sociedad Geológica de España, 1988)The Molicias Formation has traditionally been interpreted as being a basinward prograding, platform-talus-basin system, deposited in a relatively rising-sea-level environment. The proposed modification to this model is ... -
Morfología de un margen de plataforma carbonatada en el Carbonífero Superior de la Zona Cantábrica
(Sociedad Geológica de España, 1988)The main aim of this paper is to describe a intrashelf carbonate margin in the Westphalian rocks of the Ponga Nappe Unit (Cantabrian Zone). lt concerns to the Escalada limestone Fm. at the Tiatordos height, near Beleño village -
El Muschelkalk en el SW de la provincia de Soria
(Sociedad Geológica de España, 1988)Muschelkalk facies in the studied area are anomalous inside the Iberian Ranges. Reduced thickness, continental influence and the different age (Karnian) are the three main aspects. The basin margin for this area has been ... -
Presencia de la discontinuidad sárdica en la Zona Cantábrica
(Sociedad Geológica de España, 1988)The «sardic unconformity» (near the Cambrian-Ordovician boundary), ocurring in the middle part of the Armorican Quartzite-Barrios Fm., is for the first time reported in the Cantabrian Zone. A close comparison with the ...
