Thesis Collection
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Geogaceta -- Nº 23, (1997)
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Recent Submissions
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Yacimientos de Carofitas en la Depresión Intermedia (Cuenca-Guadalajara, España Central)
(Sociedad Geológica de España, 1997)This paper deals with the study of some Charophyta associated to some tertiary mammal sites in the Depresión Intermedia Basin. It has been made a first attemp to correlate micromammal biozones with Charophyta biostratigraphical ... -
Un nuevo sondeo de investigación paleoambiental del Pleistoceno y Holoceno en la turbera del Padul (Granada, Andalucía)
(Sociedad Geológica de España, 1997)This paper deals on a short description of a new borehole (100 m depth) drilled on Padul Pleistocene and Holocene peat bog for palaeoenvironmental research. An excellent correlation has been found between the Menendez Amor ... -
Unidades evaporíticas de la Cuenca de Calatayud (Mioceno inferior-medio, Zaragoza)
(Sociedad Geológica de España, 1997)The large evaporitic formation known as the Calatayud Gypsum (Lower-middle Miocene) may be subdivided into two (informal) units, lower (l.e.u.) and upper (u.e.u.), each one displaying differentiated sedimentologlc and ... -
Réplica a la publicación de cierto juicio estratigráfico relacionado con las bauxitas de la sierra de Boada (Alós de Balaguer, Pirineo leridano)
(Sociedad Geológica de España, 1997)The age of the top of the sierra de Boada bauxites outcrop is not Cenomanian as proposed by Molina et al., 1994 but Upper Senonian -
Relaciones entre las polaridades paleomagnéticas y las edades radiométricas del volcanismo de Campo de Calatrava (Ciudad Real)
(Sociedad Geológica de España, 1997)The radiometric dates from the «Campo de Calatrava» volcanism presents wide error intervals due to the low Ar40 contain. When the paleomagnetic polarities are compared with radiometric analysis, the age may be determinated ... -
Realaspis? pradoanus (Verneuil y Barrande) (Trilobita, Cámbrico Inferior): revisión de su material tipo e implicaciones taxonómicas
(Sociedad Geológica de España, 1997)The type specimen ofthe Lower Cambrian (Bilbilian) trilobite «Ellipsocephalus pradoanus» Verneuil & Barrande, 1855 is redescribed and illustrated. It is stored in the Verneuil collection ofthe Claude-Bernard University at ... -
Pliegues tumbados en los Alpujárrides de Sierra de Las Estancias (Cordilleras Béticas orientales)
(Sociedad Geológica de España, 1997)The structure of Los Blanquizares-Oria Alpujárríde unit in northern Sierra de Las Estancias is mainly determined by kilometric recumbeot North vergent folds. Foliation axial planar to these folds is a crenulation foliation ... -
Petrología, geoquímica y emplazamiento de diques de composición granodiorítica al sur del complejo plutónico de la Maladeta. (Zona Axial Pirenaica)
(Sociedad Geológica de España, 1997)A set of granodioritic dykes, related to the main intrusive episode of the Maladeta Plutonic Complex, is studied. These dykes, that follow the main cleavage strike, cut across deformed Paleozoic country rocks. Their ... -
Origen y desmantelamiento del Antiforme Plio-Cuaternario de Marratxí (Mallorca, España)
(Sociedad Geológica de España, 1997)The so-called MarratxiAnticline, which separates the Quaternary basins oflnca and Palma Bay (Mallorca Island), does not correspond to a true compressive feature. It only represents an NNW-SSE trending antiform resulting ... -
Nuevos datos petrológicos, geocronologia (Rb-Sr) y geoquímica isotópica (Sr, Nd) del plutón de Ventosilla (Sierra de Guadarrama, Sistema Central Español)
(Sociedad Geológica de España, 1997)Whole rock Rb-Sr ¡sotopic analyses on granites from Ventosilla pluton yield an age of 346 ± 63 Ma, and intercept at 0.708688 ± 0.00094. This age increases the time-span of the Hercynian plutonism in the area up to 70 Ma. ... -
Nuevos datos para la estimación de los valores de levantamiento desde el Tortoniense Superior a la actualidad en la parte centro-occidental de la Sierra de Carrascoy (provincia de Murcia)
(Sociedad Geológica de España, 1997)The existence of sediments of the Late Tortonian near the top, and in the slopes, of Sierra de Carrascoy, deposited above a former erosionaI surface excavated in the basement, permits precise estimation of the vertical ... -
The record of the tsunami produced by the 1755 Lisbon earthquake in Valdelagrana spit (Gulf of Cádiz, southern Spain)
(Sociedad Geológica de España, 1997)Several washover fans breaking through the spit of Valdelagrana existing in middle 7 8th Century in the Guadalete estuary (Bay of Cadiz) are interpreted as the trace of the exceptional tsunami generated by the AD 1755 ... -
Sobre el origen de la relación científica que existió entre Casiano de Prado y Edouard de Verneuil
(Sociedad Geológica de España, 1997)The geologist Casiano de Prado and Edouard de Verneuil always had a good scientific as well as personal relationship, started in 1847 and maintained up to Casiano de Prado's death in 7 866.Nevertheless in recent years a ... -
Síntesis de la evolución geomorfológica de Galicia Occidental
(Sociedad Geológica de España, 1997)This paper presents an actualization of the ideas about the geodinámicaI and geomorphological setting of Western Galicia, as well as the cenozoic evolution, and a model were the evolutionary sequence is proposed. The present ... -
Nd isotopic heterogeneity in Iate-Hercynian granitic plutons from Central Spain
(Sociedad Geológica de España, 1997)Some Hercynian granitic plutons from Central Spain show variation in initial Nd isotopic ratios defining different trends with increasing silica content. There is a decoupling between the Sr and Nd isotopic systems as these ... -
Las unidades litoestratigráficas del tránsito Triásico-Jurásico en la región de Lécera (Zaragoza)
(Sociedad Geológica de España, 1997)One of the main challenges in the stratigraphy of the Mesozoic sediments of the Iberian Ranges is the recognition ofthe Triassic-Jurassic boundary. Subsurface data provided by the hydrocarbon wells drilled in the not ... -
La sección del Carbonífero en el Priorat Central (Prov. de Tarragona)
(Sociedad Geológica de España, 1997)The Carboniferous outcrops in the Central Priorat (Fig. V, Catalan Coastal Range, record a turbidite succession ranging from Tournaisian to a possible Westphalian, in which three allogroups can be recognized. From base ... -
Las aportaciones de Casiano de Prado a la geomorfologia granítica
(Sociedad Geológica de España, 1997)This paper deals with the main contributions to granite geomorphology kinds of forms described by Casiano de Prado, some of its (tafone) the oldest reference on the scientific literature -
La obra de Casiano de Prado (1797-1866): Una vision sintética
(Sociedad Geológica de España, 1997)Main contributions of Casiano de Prado (1797-1866), a Spanish mining engineer, are presented for the following fields: Geological and Paleontogical Knowledge of Spain; Geomorphology and Speleology of Spain; Prehistoric ... -
La geología de la Cuenca de Madrid en la obra de Casiano de Prado (1797-1866)
(Sociedad Geológica de España, 1997)After Casiano de Prado the infill of Madrid Basin consists of: the "diluvium" or quaternary deposits which surface and thickness was overestimated in his work, and "fresh water tertiary deposits". In the tertiary deposits ...
