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Geogaceta -- Nº 13, (1992): Recent submissions
Now showing items 1-20 of 36
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Secuencia diagenètica temprana de la plataforma carbonatada con paleocarst de Arenillas (Albiense, Oriñón, Cantabria)
(Sociedad Geológica de España, 1992)The five shallow water carbonate depositlonal sequences oftheAlbian Arenillas platform in Oriñón, N Spain, are bounded by palaeokarst surfaces. Detailed petrographic and cathodoluminescence studies have revealed that the ... -
Reconsideración del límite Oxfordiense-Kimmeridgiense en el perfil de Puerto Lorente (Prebético Externo)
(Sociedad Geológica de España, 1992)In the Puerto Lorente section at the Sierra de Cazorla (External Prebetic), the uppermost Oxfordian is made up of limestones with recognizable traces of increasing condensation. O verlayin gare marls, marly-limestones and ... -
Propiedades petroestructurales de rocas madres de petróleo. Pizarras bituminosas del Cretácico superior de la cuenca vascocantábrica
(Sociedad Geológica de España, 1992)Black shales from Carai (Vizcaya) have been studied from the following points of view: mineralogy, geochemistry (pyrolysis rock-eval), porosimetry measurements and clay fabric. Data obtained suggest that: a) The presen ce ... -
Primeros resultados obtenidos en experiencias de laboratorio destinadas a caracterizar el comportamiento de contaminantes inorgánicos en materiales arenosos
(Sociedad Geológica de España, 1992)We describe the lisimetric column construction and we test it with two experiments using inorganic polluants in a sandy sample. We notice the tampon effect in the soil with the pH variations, and we observe the different ... -
Un ejemplo de tectónica salina: el sector NE del Surco de Valencia
(Sociedad Geológica de España, 1992)The messinian salt develops salt rollers, pillows and diapirs in the linking zone between the Valencia Trough and the Provenga! Basin. The correlation of the different structures based on the sedimentary wedges linked to ... -
Tectónica sinsedimentaria en un talud carbonatado con resedimentación gravitatoria en masa (Ibarra, Albiense Inferior, Bizkaía)
(Sociedad Geológica de España, 1992)The analysis of fades and thickness distribution in carbonate slope systems of the Albian of Ibarra (Bizkaia) indicates active synsedimentary faulting. E-W extensional faults separate blocks that record tilting and depocenter ... -
Secuencias deposicionales en las facies terrigenas del Cretácico en la región del Alto Tajo (Cordillera Ibérica). Provincias de Guadalajara y Cuenca
(Sociedad Geológica de España, 1992)Four depositionsI sequences have been recognized in the Cretaceous terrigenous facies in the studied area of the Iberian Ranges. The 1st and 2nd sequences are caracteristics of continental environments, and the 3th and 4th ... -
Secuencias deposicionales del Cretácico en el flanco sur del Sistema Central
(Sociedad Geológica de España, 1992)Eight depositional sequences have been recognized in the Cretaceous of the southern border of the Central System. The thickness of sedimentary succession, the marine character of the sediments and the number of depositional ... -
Pistas fósiles en la «Serie de Carrascalejo». Implicaciones cronoestratigráficas
(Sociedad Geológica de España, 1992)Trace fossils (Cruziana and Rusophycus) are described for the first time in the Carrascalejo beds. The stratigraphy of this unit is also modified; the conglomeratic basal beds are included in the underlying Precambrian ... -
Nuevos datos sobre la estratigrafía de las escamas de la Hafa el Banat y de Fahs Dohor (Hauz interno, Rif Septentrional, Marruecos)
(Sociedad Geológica de España, 1992)The stratigraphic succesions of the Hafa el Banat and of the Fahs Dohor slices (Internal Hauz, Northern Rif) are described. Both slices show stratigraphic features and a tectonic position similar to that of the Uestia II ... -
Metapelitas de alta presión de la Unidad de Santiago (Complejo de Ordenes, NO del Macizo Ibérico)
(Sociedad Geológica de España, 1992)A high - pressure - low - to intermediate temperature eo - Hercynian metamorphic event characterizes the tectonothermal evolution of the Santiago Unit, in the western margin of the Ordenes Complex. P-T conditions fo r the ... -
Litificación de carbonatos lacustres Miocenos. Cuenca de Madrid: ¿Implicaciones en el estudio de la diagénesis de carbonatos marinos calcíticos?
(Sociedad Geológica de España, 1992)As a possible model for lacustrine carbonate diagenesls, and as a guide for understanding calcitedominated marine limestones, a range of indurated Miocene limestones from the Madrid Basin were studied. Despite very shallow ... -
Líneas evolutivas de los Alveolínidos cretácicos de la Cordillera Ibérica (España)
(Sociedad Geológica de España, 1992)In this paper the presence of three different evolutive lineages of cretaceous Alveolinids is verified, using material coming from the Iberian Ranges. One of then begins with Ovalveolin a maccagnoae, the other with ... -
Li-Mineralization at Tres Arroyos (Alburquerque, Badajoz) as a result of the mineralogical and geochemical evolution of the Alburquerque batholith
(Sociedad Geológica de España, 1992)La mineralización de Tres Arroyos está formada por un haz de pegmatitas litin fieras situado en el límite SW del batolito de Alburquerque. Los diques pegmatíticos aparecen en transición petrológica y geoquímica con el ... -
Las pistas fósiles del Alcudiense superior en el anticlinal de Ibor. Consideraciones cronoestratigráficas
(Sociedad Geológica de España, 1992)New discovery of trace fossils in the Upper Alcudian of the Ibor anticline indicate that its supposed Precambrian age should be maintained but tentatively, due to the presence of scarce Lower Cambrian trace fossils although ... -
Incidencia ambiental de un vertedero sellado de residuos sólidos localizado en Móstoles (Madrid) sobre la composición natural de las aguas subterráneas
(Sociedad Geológica de España, 1992)In this paper, some considerations about the negative effects due to leachates of Mdstoles sealled landfill on groundwater quality are presented. The results show an important increase in the values of Conductivity, COD, ... -
Geocronología por el método Rb-Sr de las episienitas de la Sierra del Guadarrama, S.C.E., España
(Sociedad Geológica de España, 1992)Rb-Sr dating by internal isochrones of the episyenitea (hydrothermally dequartzified and alkalimetasomaticed granites) from the Sierra de Guadarrama gives an age of 274+-6 M.y., i.e.. Early Permian. The epysienites were ... -
La falla de San Saturio (Soria)
(Sociedad Geológica de España, 1992)In this paper we intend to offer a geological interpretation of the northern border of the Almazân basin based on a geophysical prospection . The contact of this basin with the Iberic Range has been very conditioned by the ... -
Existencia de una plataforma carbonatada del Albiense Superior entre materiales terrígenos de mar somero (Karrantza-Trucíos, Bizkaia)
(Sociedad Geológica de España, 1992)Facies analysis and distribution in the Karrantza and Trucfos Valleys have allowed a detailed correlation of Upper Albian series. A new carbonate platform belonging to the Urgonian Complex is described and correlated with ... -
Evolución tectonotermal de la Unidad de Santiago (Complejo de Ordenes): un ejemplo de subducción eo-hercín¡ca y descompresión sin-colisional
(Sociedad Geológica de España, 1992)The syn-D2 uplift of the Santiago Unit, inmediately after of the high-pressure eo-Hercynian metamorphic event, cause a markedly decompressive-slightly prograde P,T,t path. This path very likely suggests that the majority ...
