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Browsing Geogaceta -- Nº 33, (2002) by Title
Now showing items 1-20 of 35
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Aplicación de los isótopos estables del plomo al estudio de la contaminación de aguas subterráneas en un sector del acuífero Almonte-Marismas (Huelva)
Olías Álvarez, Manuel
; Cerón García, Juan Carlos; Fernández, I.; Olivas, E.; Rosa Díaz, Jesús de la (Sociedad Geológica de España, 2002)
Results from a lead isotopic content research on a sector of the Almonte-Marismas aquifer are presented. A strawberry irrigation farming has been introduced on the studied sector. The lowest value of isotopic rate ... -
An averaging procedure for applying the Revised Universal Soil Loss Equation (RUSLE) to disturbed mountain watersheds
(Sociedad Geológica de España, 2002)Disturbed lands in mountain watersheds may be a significant source of sediment. A systematic rating of their potential for erosion would be useful in soil conservation planning. RUSLE is a successful erosion-prediction ... -
Características espectrales de mezclas minerales en el Piedemonte de la Sierra de la Peña de Francia (provincia de Salamanca)
(Sociedad Geológica de España, 2002)Laboratory reflectance spectroscopy covering the 400 to 2500 nm wavelength interval and X-ray diffraction analysis are applied to a set of samples composed of mineral mixtures, in order to determine the relatioships between ... -
Caracterización diagenètica de la Formación La Luna, en la sección de la Quebrada Chiriría, Estado Táchira, Venezuela
(Sociedad Geológica de España, 2002)La Luna Formation in the Quebrada Chiriría section is constituted by calcareous shales and limestones of dark colors with siliceous and phosphatic intervals. This paper is based on a diagenetic study of thin sections (196) ... -
Caracterización geoquímica y tectonomagmática de los haces de diques básicos del extremo oriental de la Zona Sudportuguesa
García Navarro, Encarnación; Rosa Díaz, Jesús de la; Fernández Rodríguez, Carlos; Castro Dorado, Antonio (Sociedad Geológica de España, 2002)
High volumes of diabase dykes outcrop in the Eastern part of the South Portuguese Zone, which crosscutting the subvolcanic and plutonic rocks of the Seville Range batholith (SRB), and they are covered by permian deposits ... -
Coladas piroclásticas antiguas: un caso de estudio en la cuenca pérmica del Viar (SO de España)
Sierra del Pino, Sonia; Moreno Garrido, María Carmen; González Barrionuevo, Felipe (Sociedad Geológica de España, 2002)
An example of study about ancient pyroclastic flows deposits is shown in this paper. Rhyodacitic pyroclastic flow deposits have been analyzed in the Permian Viar Basin, SW of Spain. They are associated with others volcanic ... -
Contribución de datos Iisimétricos a la evaluación de la Recarga al Acuifero Almonte-Marismas
Olías Álvarez, Manuel; Cruz Sanjulián, J. J.; Benavente Herrera, José (Sociedad Geológica de España, 2002)
This work presents Almonte-Marismas aquifer recharge data obtained from a pair of lysimeters at a farming site located South El Rocío. Many Doñana National Park ecosystems depend on aquifer supplies. Results of actual ... -
Control mineralógico sobre la fijación de metales en procesos de oxidación de sulfuros
Capitán, M. A.; Nieto Liñán, José Miguel; Sáez Ramos, Reinaldo; Ruiz de Almodóvar Sel, Gabriel (Sociedad Geológica de España, 2002)
Gossans are the products of intense oxidation of massive sulphide deposits exposed in the surface. In the Filón Sur deposit (Tharsis, Huelva), a detailed petrological and mineralogical study of the gossan has allowed us ... -
Cuantificación de procesos de erosión costera en el litoral suratlántico español. Primeros resultados
Rio, L. del; Benavente Herrera, José; Gracia, F. J.; Anfuso, Giorgio; Martínez del Pozo, J. A.; Dominguez, L.; Rodríguez Ramírez, Antonio; Flores, E.; Cáceres, U. M.; López Aguayo, F.; Rodríguez Vidal, Joaquín (Sociedad Geológica de España, 2002)
Aerial photographs and historical records have been analyzed to reconstruct the coastal evolution in recent times, while the erosive processes acting in the short term have been studied by means of a field monitoring ... -
Datación U-Pb con SHRIMP de circones de las eclogitas ofiolíticas del Complejo del Mulhacén (Cordillera Bética)
Puga, Encarnación; Fanning, C. M.; Nieto Liñán, José Miguel; Díaz de Federico, Antonio (Sociedad Geológica de España, 2002)
Eclogites formed during the eoalpine HP metamorphic event are common within the Ophiolitic Unit of the Mulhacén Complex. A detailed cathodoluminescence study and U-Pb SHRIMP dating of zircons from eclogites of the locality ... -
Descripción e interpretación de la columna estratigráfica tipo de la serie vulcano-sedimentaria neógena del Valle del Cajón (Catamarca, Argentina)
Parra, L. E.; Morales González, Juan Antonio (Sociedad Geológica de España, 2002)
El Cajón Valley is a tectonic depression elongated in a N-5 direction into the geologic province of Sierras Pampeanas (Argentina). The present dynamic in the study area is controlled by a continetal extremely arid climate, ... -
Diseño metodológico para la elaboración de mapas de paisaje: Aplicación al espacio natural protegido de El Rebollar
(Sociedad Geológica de España, 2002)A methodological approach to the study of landscape is proposed in this work, applied to a specific scenario such as the protected Landscape of El Rebollar (Spain). The elaboration of different thematic and synthetic maps ... -
Distribución de los contenidos de Fe y Pb en escombreras, suelos y sedimentos del distrito minero de Linares (Jaén)
(Sociedad Geológica de España, 2002)Soils and sediments from historical metallic sulphides mining and smelting areas in Linares (jaén) have been sampled for both the determination of the total amount of heavy metals and the analysis by a 5-step sequential ... -
Edad minima del gossan de Las Cruces: implicaciones sobre la edad del inicio de los ecosistemas extremos en la Faja Pirítica Ibérica
Moreno Garrido, María Carmen; Capitán, M. A.; Doyle, M.; Nieto Liñán, José Miguel; Ruiz Muñoz, Francisco; Sáez Ramos, Reinaldo (Sociedad Geológica de España, 2002)
The micropalaeontogical study of glauconite sands overlying Las Cruces massive sulfide deposit (Iberian Pyrite Belt) indicates an Upper Tortonian minimum age for oxidation and the gossan genesis. Sulfide oxidation, both ... -
Estructuras bioerosivas de anélidos poliquetos (Serpulidae) en el Neógeno superior del Sur de la Península Ibérica
Santos, Ana Alexandra Guerreiro dos; Mayoral Alfaro, Eduardo; Muñiz Guinea, Fernando; Vera Peláez, José L.; Lozano Francisco, María C. (Sociedad Geológica de España, 2002)
New superficial etching traces corresponding to annelids of the family Serpulidae are described. These traces present an elongated, sinuous and/or spiralated pathway in a plan view. They consist in a very shallow central ... -
Estructuras de escape de anémonas marinas (Conichnus indet. isp.) y sedimentación en depósitos litorales del Complejo Basal Transgresivo del sector central de la Cuenca del Guadalquivir (SO España)
Abad de los Santos, Manuel; Ruiz Muñoz, Francisco; Pendón Martín, José Gabriel; Tosquella Angrill, Josep; González-Regalado Montero, María Luz (Sociedad Geológica de España, 2002)
The study of faunistic associations, ichnology and sedimentology of coastal deposits, that crops out in the central sector of pasive margin of the Guadalquivir Basin, allows us to make an approached reconstruction of ambient ... -
Estudio preliminar de los sedimentos recientes de las lagunas de Villafáfila (Zamora)
(Sociedad Geológica de España, 2002)Recent sedimentation in the Lagunas de Villafafila is dominated by fine-grained sllicidastic deposits mainly composed of quartz, feldspar, muscovite, illite and kaolinite. Sediments are clay, clayey silts and clayey fine ... -
Evolución morfodinámica de la playa de Panxón (Galicia, NO de España)
(Sociedad Geológica de España, 2002)Panxón beach (Pontevedra, NW of Spain) was quarterly surveying from November 2000 to January 2002. Five beach profiles were monitored and four sediment samples were collected in each profile that were located at the beach ... -
Influencia de las burbujas en la viscosidad de magmas haplograníticos vesiculados
López, S.; Fernández Rodríguez, Carlos; Donaire Romero, Teodosio; Castro Dorado, Antonio (Sociedad Geológica de España, 2002)
The changes in the viscosity of bubble-bearing haplogranitic magmas with crystallinity are a prime function of the applied deformation rate. Under high deformation rates melt and magma viscosities are found to strongly ... -
Inicio del vulcanismo en el sector de Calañas (Faja Pirítica Ibérica). Caracterización y datación
Moreno Garrido, María Carmen; González Barrionuevo, Felipe; Sáez Ramos, Reinaldo; Sierra del Pino, Sonia (Sociedad Geológica de España, 2002)
First volcanic rocks of the Calañas area, Central Sector of the Iberian Pyrite Belt, are felsic lavas that are included in a black shaly sequence at the bottom of the Volcano-Sedimentary Complex. This sequence is ...
