Thesis Collection
Last Deposit
Browsing Geogaceta -- Nº 11, (1991) by Title
Now showing items 1-20 of 42
-
Aproximación al cálculo de los valores absolutos de paleoesfuerzos compresivos en el Mioceno Inferior de Tudela (Navarra)
(Sociedad Geológica de España, 1991)The analysis of a strike-s/ip fault population measured in Lower Miocene limestones near Tudela (Navarra, Spain) results in a deviatoric stress tensor characterized by oriented 028, 79 S, 120, 05 W and The absolute ... -
Aproximación al paleorelieve Tortoniense del margen ibérico meridional (depresión occidental del Guadalquivir)
Rodríguez Vidal, Joaquín
(Sociedad Geológica de España, 1991)
During the Middle•Upper Tortonian, the southern edge of the Iberian Massif was affected by a marine transgression. So the planated topography (pre-Tertiary erosion surface). tilted to the south (1% - 3%), was cutting by ... -
Características geoquímicas de las carbonatitas de la Pta. del Peñón Blanco, Fuerteventura. Canarias
(Sociedad Geológica de España, 1991)In this paper the main geochemical characteristics of the carbonatites located at Pta. del Peñón Blanco are described. They are calcite carbonatites with typical high concentrations of Sr, Ba and REE Some of them show a ... -
Caracterización geoquímica de los granitoides de Mora Gálvez (Toledo)
(Sociedad Geológica de España, 1991)In the plutonic complex of Mora-Gálvez (south Toledo) we have distinguished three types of granitoids: coarse grained granites, porphiritc granites and cordierite nodules leucogranites. Al/ of them are biotite-bearing and ... -
Caracterización hidroquímica de las relaciones río-acuífero en la Sierra de Lújar (Granada)
(Sociedad Geológica de España, 1991)Besides of the early-summer snowmelt effect on the Guadalfeo river salinity, the hydrochemical data point out that a significant part of the discharge of the Sierra de Lújar carbonate aquifer is made directly towards the ... -
Consideraciones sobre la biostratigrafía y paleoecología del Ventiense final en las Cordilleras Béticas. El yacimiento de Cacín-l
(Sociedad Geológica de España, 1991)lt is shown «calizas de páramos» represent the ultimate ceiling of the Ventien in the Granada Depression. Lacustrine sedimentation is quite continuous during this period. Fauna shows climatic alterations. The subspecies ... -
Contrasting styles of paleokarst infill in a block-faulted carbonate ramp (Lower Albian, Trucios, N Spain)
(Sociedad Geológica de España, 1991)En e/ Complejo urgoniano de Trucios (Vizcaya) se caracteriza una superficie de pa/eokarst que presenta rellenos sedimentarios diferentes en función de/ dominio tectosedimentario. Tras una fase de paleokarstificación de la ... -
Dating of hydrothermal events in the Sierra del Guadarrama, Iberian Hercynian Belt. Spain
(Sociedad Geológica de España, 1991)Preliminary results are presented on the age of the hydrothermal activity recorded in the Sierra del Guadarrama. They are among the first data generated by the 1<-Ar Spectrometry Lab. of the CSIS-UCM at Madrid. Hydrothermalites ... -
Deformación extensional de las unidades alóctonas superiores de la parte oriental del Complejo de Ordenes (Galicia)
(Sociedad Geológica de España, 1991)A penetrative extensional tectonics, which includes the existence of three important detachments, has been identified in the Sobrado area, in the eastern margin of the Ordenes Complex. It is related to the extensional ... -
Descripción e interpretación de las litofacies evaporíticas de Artesa de Segre (Eoceno Superior del NE de la Cuenca del Ebro)
(Sociedad Geológica de España, 1991)The evaporitic sequence of Artesa de Segre (Lleida) is related to the Noguera lacustrine system (Barbastro Fm, upper Eocene to Iower Oligocene). The evaporites are found in between continental paelogene sediments. Two main ... -
Las discontinuidades estratigráficas del Buntsandstein en el borde occidental de la cuenca triásica y su implicación en las correlaciones
(Sociedad Geológica de España, 1991)The correlation among the diverse areas where the Triassic sediments have been described in the western Cordillera Ibérica and the border area of the Sistema Central has proved to show great difficulties. A very detailed ... -
Discordancias progresivas y expresión geomorfológica de los abanicos aluviales cuaternarios de la Depresión tectónica del Guadalentín (Murcia, SE España)
(Sociedad Geológica de España, 1991)Several progressive unconformities have been observed along the convergent strike-slip faults on both margins of the Guadalentín tectonic Depression, which generate five main faulted mountain fronts. All these have been ... -
El edificio sur (Jandía) de la serie I de Fuerteventura: rasgos generales
(Sociedad Geológica de España, 1991)The Jandia is one of the three main edifices identified in the Old Basaltic Series of Fuerteventura. lt shows now a semicircular shape with a nortwards facing opening. This large volcano built up by lava flows and pyroclastics ... -
Efectos derivados de las actuaciones antrópicas sobre los ritmos de crecimiento de la flecha litoral de El Rompido (Huelva)
Borrego Flores, José; Morales González, Juan Antonio; Pendón Martín, José Gabriel (Sociedad Geológica de España, 1991)
Factors which mainly controls the evolution of depositional environments along the mesotidal coast of Hue/va (SW Spain) are: 7) Sediment supply; 2) Hydrodynamic setting and 3) Artificial constructions. These factors are ... -
Electrofacies en el Triásico del subsuelo de la Cuenca de Almazán
(Sociedad Geológica de España, 1991)The detailed study of two well logs in the Almazán Tertiary basin, have resulted in a correlation between the surface and subsurface Triassic and Permian data and the analysis of their sedimentary environments. Variations ... -
Elementos morfodinámicos responsables de la evolución reciente del estuario bajo del río Guadiana (Huelva)
Borrego Flores, José; Morales González, Juan Antonio; Pendón Martín, José Gabriel (Sociedad Geológica de España, 1991)
Guadiana estuary is located along the mesotidal coast of Huelva (SW Spain) and their modern configuration has been traditionally interpreted in terms of interaction among: 7) Litoral drift; 2) tidal range and 3) Fluvial ... -
Escarpe de falla del Cuaternario reciente en la falla del Camp (Cadenas Costeras Catalanas)
(Sociedad Geológica de España, 1991)The activity of the El Camp fault since ear/y Neogene has originated the El Camp graben. We have defined at least three diferent Quaternary generations of al/uvial fans associated with the norma/ motion of that fault. The ... -
Los Esciurópteros del Mioceno de la cuenca del Vallès-Penedès (Cataluña, España)
(Sociedad Geológica de España, 1991)In this paper the Sciuropteres from the Miocene of Vallès-Penedès basin are described. Two genera and four species were recognised. The distribution of Miocene Sciuropteres remains in Cata[uña is compared with that of Other ... -
Evolución de los caracteres dentarios en el género Palaeomys (Mammalia: Rodentia)
(Sociedad Geológica de España, 1991)Variation in morphology of Palaeomys cheek teeth has been examined in respect of age classes and geological time. When the effects ofwear are taken into account, certain patterns dental variation are found to be restricted ... -
Formación de sulfuros de hierro en estuarios actuales: algunas consideraciones genéticas
Borrego Flores, José; Morales González, Juan Antonio; Pendón Martín, José Gabriel (Sociedad Geológica de España, 1991)
Iron sulfides found in estuaries located along the mesotidal coast of Huelva (SW Iberia) show various kinds of occurrence and allow to infer their genesis as an early diagenetic process. Sediment burial produces the ...
