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Browsing Geogaceta -- Nº 38, (2005) by Title
Now showing items 1-20 of 67
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Abanicos aluviales telescópicos cuaternarios. Andes argentinos
(Sociedad Geológica de España, 2005)The largest rivers that drain the Argentine Andean Ranges are characterised by incised valleys in high mountains and by a variety of Quaternary terraces. Their convex-up morphology suggests that these terraces are related ... -
Análisis tafonomico de los macromamíferos del Mioceno superior de Caleufú (La Pampa, Argentina)
(Sociedad Geológica de España, 2005)The taphonomic results on the fossil macromammal assemblage from Caleufú (La Pampa Province, Argentina) are presented. The fossiliferous level corresponds to the Cerro Azul Formation, Late Miocene in age. Among the ... -
Anomalías gravimétricas y estructura del abanico aluvial de La Zubia (Sierra Nevada occidental, Cordilleras Béticas)
(Sociedad Geológica de España, 2005)La Zubia alluvial fan is located at the boundary between the western slopes of Sierra Nevada and the Granada depression. The Alpujárride rocks of the northwestern flank of Sierra Nevada antiform constitute its metamorphic ... -
Aplicación de la prospección geofísica por georradar (GPR) a la delimitación y caracterización de estructuras arqueológicas. Ejemplo de las ruinas del convento agustino de Fraga (Huesca)
(Sociedad Geológica de España, 2005)A ground penetrating radar survey has been aplied to an archeological site before its excavation. GPR survey has been very useful to localize and characterize the remains of the Augustinian monastery of Fraga (Huesca). ... -
Arquitectura de facies de los deltas cuaternarios del río Llobregat, Barcelona, España
(Sociedad Geológica de España, 2005)The Llobregat River has accumulated multiple deltas through Quaternary eustatic cycles. The rapid rises and step-wise, relatively slower falls in sea level have produced a bias towards preserving forced regressive system ... -
Características diferenciales y génesis de los niveles silíceos explotados en el yacimiento arqueológico de Casa Montero (Vicálvaro, Madrid)
(Sociedad Geológica de España, 2005)The research during the construction of the M-50 highway has allowed the study of the silica levels that constitute the most important Neolithic flint mine in the Iberian Peninsula. A group of more than 3.800 extraction ... -
Características geoquímicas y factores de enriquecimiento (FE) de los Sedimentos Estuarinos de la Costa de Huelva (SW España)
Lozano Soria, O.; Borrego Flores, José
; López González, Nieves; Carro Flores, Berta (Sociedad Geológica de España, 2005)
The geochemical composition of the surface sediments has been analyzed for three estuaries located in the Huelva coast: Guadiana, Piedras and Ría de Huelva (Tinto and Odiel river estuaries) and it has determined the ... -
Caracterización de los depósitos sedimentarios con dinosaurios de Riodeva (Teruel)
(Sociedad Geológica de España, 2005)Recent discoveries of dinosaur fossils in Riodeva led us to carry out a systematic study of the geology of the area. The calcareous-siliciclastic facies rich in fossil bones are attributed to the Villar del Arzobispo Formation ... -
Caracterización de los dominios hidrogeológicos individualizados en el Sistema Mancha Oriental. SE Español
(Sociedad Geológica de España, 2005)Since 1969, hydrological studies have been focused on the evaluation of the water resources in the Mancha Oriental aquifer. According to the water level records, some of them divide the system in several zones, which ... -
Caracterización de los minerales del dique gabroideo de Messejana - Plasencia en su sector nor-oriental
(Sociedad Geológica de España, 2005)In the gabbroic Messejana–Plasencia dyke we have distinguished three types of pyroxenes: enstatite, pigeonite and augite. Enstatite and augite have been the first minerals that have crystallized at high T (1100ºC – ... -
Caracterización de materiales volcánicos mediante técnicas geofísicas someras: 1. Tomografía eléctrica
(Sociedad Geológica de España, 2005)Volcanic deposits and structures are characterized by a high variability in both geometry and physical properties. These changes are common not only in a vertical direction but in the horizontal one too. As a result, the ... -
Caracterización de materiales volcánicos mediante técnicas geofísicas someras: 2. Georadar
(Sociedad Geológica de España, 2005)We have analyzed the ground penetrating radar (GPR) response in several volcanic materials (massive, pahoehoe and aa lava flows and airfall deposits) occurring in the Las Cañadas edifice (Tenerife, Canary Islands), in ... -
Caracterización paleosísmica preliminar de la falla de Concud (fosa del Jiloca, Teruel)
(Sociedad Geológica de España, 2005)The Concud fault is a 13-km long fault located at the eastern boundary of the Jiloca graben (Teruel, Spain) that has been active during most of Late Pliocene and Quaternary times. Offsets measured in some dated stratigraphic ... -
Caracterización petrofísica de areniscas del Eoceno Medio–Superior del Pirineo Occidental
(Sociedad Geológica de España, 2005)In this work we have studied six varieties of Tertiary sandstone from the Pyrenees, they are all litharenites with medium grain size between 0,1 a 0,25 mm and porosity between 0,4 - 4%. Some petrographical and physical ... -
Characterization of Brazilian oils by FTIR and SUVF spectroscopy. A comparison with GC/MS results
(Sociedad Geológica de España, 2005)La aplicación de IRTF y FUVS en varios petróleos de Brasil ha contribuido al establecimiento de parámetros complementarios que permiten evidenciar diferencias entre ellos. Estas diferencias están ligadas al ambiente de ... -
Cinemática y paleoesfuerzos en la zona de falla transcurrente de Jebha-Chrafate (Rif septentrional, Marruecos)
(Sociedad Geológica de España, 2005)The Jebha-Chrafate is an ENE-WSW sinistral major transcurrent fault of the Rif Cordillera, formed during the southwestwards emplacement of the Internal Zones on the Flysch units and the External Zones. The analysis of ... -
A comparison of the Neoproterozoic / Lower Palaeozoic lithostratigraphy of Morocco and southwestern Iberia. Geodynamic interpretations
(Sociedad Geológica de España, 2005)El Neoproterozoico del sudoeste de Iberia (Serie Negra y Formación Malcocinado) es contemporáneo de un magmatismo calcoalcalino (Precámbrico PIII del Anti-Atlas de Marruecos) que sella la Orogenia Cadomiense. El Cámbrico ... -
Concentración y fraccionamiento de Tierras Raras en el agua del sistema fluvio-marino del río Tinto (SO de España)
López González, Nieves; Borrego Flores, José; Rosa Díaz, Jesús de la; Grande Gil, José Antonio; Carro Flores, Berta; Lozano Soria, O. (Sociedad Geológica de España, 2005)
The REE concentration in the water of the Tinto river decreases from the fluvial sector (1098.63 μg·l-1) to the zone of greater marine influence (0.33 μg·l-1) showing a strong longitudinal gradient in the estuarine mixing ... -
Control orbital de la dinámica de la surgencia de Perú durante los últimos 800 ka evidenciado por las asociaciones de Cocolitofóridos
(Sociedad Geológica de España, 2005)In order to analyze the surface water dynamics in the Peru upwelling system zone during the last 800 Ka, we studied the calcareous nannofossil content. The ODP site 1237 coccolith assemblage revealed two dominant taxa: ... -
A cryptic Early Palaeozoic event in the Narcea Antiform? 40Ar/39Ar amphibole data in the Puente de Selce granitoid
(Sociedad Geológica de España, 2005)Las edades 40Ar/39Ar obtenidas a partir de anfíboles del granitoide Neoproterozoico de Puente de Selce, localizado en el Antiforme del Narcea junto con la existencia de fábricas de deformación relictas generadas en ...
