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Browsing Geogaceta -- Nº 35, (2003) by Title
Now showing items 1-20 of 47
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Age and setting of the Upper Neoproterozoic Narcea Antiform volcanic rocks (NW Iberia)
(Sociedad Geológica de España, 2003)U-Pb dating of zircons from ryolites intercalated within the Narcea Antiform Neoproterozoic rocks was performed by laser ablation ICP-MS). The age of the ryolite is 559±3 Ma which allows the separation of two different ... -
Ambiente sedimentario y ciclicidad estratigrafica de los materiales de la Formacion «Arenas y ardllas del Collado» (Cretacico inferior), en el sector de Alpuente (Valencia)
(Sociedad Geológica de España, 2003)The «Arenas y arcillas del Collado» Formation (Lower Cretaceous, Southwestern Iberian Basin, Valencia) represent a wave-dominated delta. It contain fluvial and shallow- marine deposits wich are arranged in two types of ... -
Ambientes sedimentarios y secuencias en la Fm. Higueruelas (Jurásico Superior) en la Cordillera Ibérica Septentrional
(Sociedad Geológica de España, 2003)Fades analysis carried out in the Higueruelas Fm. (Tithonian, latest Jurassic) in the northern Iberian Chain (Mezalocha, Aguilon and Fuendetodos outcrops), has resulted in the identification of 14 fades. These fades were ... -
Análisis tafonómico preliminar de la ictiofauna pliocènica del S.O. de España
Ruiz Muñoz, Francisco
; Abad de los Santos, Manuel; García García, Edith Xiomara (Sociedad Geológica de España, 2003)
The taphonomic analysis of the Osteichthyes and Condrichthyes of the Arenas de Huelva Formation permits to delimitate three parts into this Neogene unit: a) basal, glauconitic layer, with numerous teeths and caudal stings ... -
Aplicación de la distribución de Poisson al análisis autoecológico de Ammonia tepida (Foraminifera) en medios estuarinos del suroeste de España
Ruiz Muñoz, Francisco; Muñoz, J. M.; González-Regalado Montero, María Luz; Abad de los Santos, Manuel; Pino, R. (Sociedad Geológica de España, 2003)
This work analyzes the populations of Ammonia tepida (Foraminifera) In the southwestern Spanish estuaries with the application of the Poisson's distribution. Although the general model is unsatisfactory for a possible ... -
Características de los sedimentos del litoral entre Chipiona y Rota (Cádiz, SO de España)
(Sociedad Geológica de España, 2003)A morphological and sedimentological monitoring program was carried out in Cadiz littoral (SW Spain). Sediments were sieved and sedimentological parameters were calculated. Sediments, composed by quartz rich sands, present ... -
Características geológicas de la Sierra de Quibas (Abanilla, Murcia). Su relación con un yacimiento paleontológico pleistoceno
(Sociedad Geológica de España, 2003)The Sierra de Quibas is mainly a Lower Jurassic carbonated relief. Its main structure is a klippe of Middle Subbeticon Southern Prebetic. The internal structure is a NE-SW anticlinorium. Detailed geological mapping (E. ... -
Caracterización de la Turba del Yacimiento de Caspueñas -Fuentes de la Alcarria (Guadalajara, España)
(Sociedad Geológica de España, 2003)Deposits of peat have been discovered among the materials of the bottom of the river Ungria Valley (Guadalajara). These deposits are extended, at least, from Caspuenas to Fuentes de Alcarria villages. So far 23 research ... -
Caracterización geoquímica del horizonte glauconítico en el límite superior de la Formación Niebla (Tortoniense superior, SO España): Datos preliminares
Abad de los Santos, Manuel; Rosa Díaz, Jesús de la; Pendón Martín, José Gabriel; Ruiz Muñoz, Francisco; González-Regalado Montero, María Luz; Tosquella Angrill, Josep (Sociedad Geológica de España, 2003)
An approach to the geochemical characteristics of the tortonian glaucony horizon cropping out along the northern margin of the Guadalquivir Basin is done in this note. The study of glauconite as well as t he host whole ... -
Caracterización hidrodinámica e hidroquímica de la Fuente Grande de Alfacar (Sierra de la Alfaguara, Granada)
(Sociedad Geológica de España, 2003)Fuente Grande spring is the main natural discharge point of the carbonate aquifer system of the Sierra de la Alfaguara (Granada, Spain). The hydrodynamic and hydrochemical responses of this spring, with respect to ... -
Caracterización morfodinámica de las playas del tramo costero marroquí entre Ceuta y Cabo Negro
(Sociedad Geológica de España, 2003)A beach monitoring program was carried out in July 2003 in the Mediterranean littoral between Fnideq and M'diq, (NE of Morocco). Beaches present a great range in width and small slope variations. In fact, main littoral ... -
Caracterización química del agua de goteo en la cueva Kaite y monitorización de las variaciones estacionales
(Sociedad Geológica de España, 2003)Characterization of drip waters in karstic caves is a key task for interpreting speleothems in terms of paleodimate record. Particularly, variations in stalagmite composition, growth rate and microstratigraphy, often used ... -
Comparison between different methods of paleotemperature reconstruction in the Alboran Sea (OPD 977 core), based on planktic foraminifera assemblages of the last 150 kyr
(Sociedad Geológica de España, 2003)Sea surface temperatures (SST) in the Alboran Sea during the last 150 ka have been reconstructed in ODP Site 977 using the Transfer Function method of Imbrie & Kipp (1971) and the Modem Analog Technique (MAT), both based ... -
Correlación geoquímica en la microestructura de Boumonia sp. y Gredilla de Sedaño, Norte de Burgos, España)
(Sociedad Geológica de España, 2003)The different geochemical behaviour of the cellular and compact microstructures in Bournonia sp. and Praeradiolites ciryi has been studied through geochemical correlation between both skeletal types. It is the first time ... -
Datación Sm-Nd del metamorfismo en ía Sierra de las Imanas (Sierras Pampeanas Occidentales, Argentina)
(Sociedad Geológica de España, 2003)Sm-Nd garnet geochronology of a migmatite gneiss from the Sierra de las Imanas (Western Sierras Pampeanas) has provided a peak metamorphic age of 464.6 ± 4.5 Ma, i.e., Middle Ordovician, corresponding to the Famatinian ... -
Decoupling in mechanically heterogeneous multilayered sandbox
(Sociedad Geológica de España, 2003)Analogue modelling has successfully simulated the progressive development of duplex formation in sand pack with intercalation of glass microbeads, whose coefficient of internal friction is significantly lower then that of ... -
Depósitos silíceos hidrotermales y alteraciones asociadas en sedimentos carbonáticos del Tortoniense siiperior( Agua Amarga, Almería)
(Sociedad Geológica de España, 2003)Hydrothermal silica deposits occur in a small fault (dike) as well as in several veins located in the contact between the andesitic volcanic rocks (8.1-8.7 M years old) and the biocalcarenites (Upper Tortonian-lower ... -
El Pérmico y Triásico del anticlinal de La Rodana, SE de la Cordillera Ibérica (Valencia)
(Sociedad Geológica de España, 2003)The stratigraphical and sedimentological study of the Rodarías Anticline, SE Iberian Ranges (Valencia Province, Spain), allows to differentiate five lithostratigraphical units represented by sediments of Upper Permian-Middle ... -
Ensayos destructivos y no destructivos (ultrasonidos) en la determinación de calidad de rocas ornamentales: aplicación a dolomías brechoides
(Sociedad Geológica de España, 2003)Quality estimation of a brecciated dolostone (triassic-jurassicof the subbetic zone) is realised by using the ultrasonic technique. For this purpose, the relationship between ultrasonic parameters, compressive strength and ... -
Estudio de la descarga de la vertiente meridional de Sierra Tejeda (Málaga) mediante el análisis correlatorio y espectral
(Sociedad Geológica de España, 2003)Four river basins in Sierra Tejeda area have been studied by means of the correlation and spectral analysis. These river basins are formed by marbles and schists in their upper and lower part, respectively. The water ...
