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Browsing Geogaceta -- Nº 21 (1996) by Issue Date
Now showing items 1-20 of 54
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Astronomical cyclicity and sapropels in the pre-evaporitic Messinian of the Sorbas basin (Western Mediterranean)
(Sociedad Geológica de España, 1996)A high resolution study of the Messinian pre-evaporitic maris of the Sorbas basin was carried out with the main object of analysing the high frequency cyclicity identified in this basin, in the lower part of the succession, ... -
Análisis del exceso dé denteilo de las aguas subterráneas al sureste de Sierra Nevada (Almería)
(Sociedad Geológica de España, 1996)The anafyàis of thé deuteriúrri excess values found in samples from 43 springs and wells to the southeast of Sierra Nevada shows: (a) a relatively scarce seasonal variability, when compared to the precipitation data, and ... -
Réplica al artículo: «Características geoquímicas preliminares de azabaches artesanales del Kimmeridgiense de Asturias» (C.G. Blanco, M. Valenzuela, C. Suárez de Centi, M. Fernández Pello; Geogaceta 20(3): 677-680)
(Sociedad Geológica de España, 1996)The article of C. G. Blanco, M. Valenzuela, C. Suárez de Centi y M. Fernández Pello published in Geogaceta (1996), 20(3): 677-680 contains serious deficiencies and a lack of scientific rigour that undermines the vality of ... -
Los yacimientos pleistocenos de Torralba y Ambrona y sus relaciones con la evolución geomorfológica del Polje de Conquezuela (Soria)
(Sociedad Geológica de España, 1996)The Ambrona and Torralba archeological sites are related to the pleistocene evolution of the Conquezuela-Ambrona-Torralba polje. A study made of the centre-south sectors of this polje, nowadays highly degraded In part ... -
Registro de Geyssantia (Ammonitina, passendorferiinae) en el Oxfordiense superior de la Sierra Norte de Mallorca
(Sociedad Geológica de España, 1996)The record of the Passendorferiinae genus Geyssantia is noticed from the Sierra Norte (Mallorca). This is the first published record of this genus in epioceanic ammonitico rosso facies. As mainly registered in the Iberian ... -
Aportaciones de los ostrácodos a la evolución del canal mareal Domingo Rubio (Río Tinto, SW España)
Ruiz Muñoz, Francisco
; González-Regalado Montero, María Luz (Sociedad Geológica de España, 1996)
The ostracofaune of nine cores collected in the Domingo Rubio tidal channel shows evidences of four stages during the Ho/ocene filling: a) open bay; b) central barrier and two tidal channels; c) one tidal channel very ... -
Fauna y facies sedimentarias: el canal mareal Domingo Rubio (Río Tinto, SW España)
González-Regalado Montero, María Luz; Ruiz Muñoz, Francisco (Sociedad Geológica de España, 1996)
Modern sediments ófthe Domingo Rubio channel have been studied to characterize the relation between the litho facies and faunal changes; investigations of nine cores show the evolution from subtidal conditions to recent ... -
Sismicidad en el límite de placas entre Eurasia y Africa al SW de Iberia, desde 1984 a 1994
Camacho Cerro, Manuel Alejandro; Alonso Chaves, Francisco Manuel (Sociedad Geológica de España, 1996)
Spatial distribution of earthquakes in the SW iberian margin has been studied for the period 1984-1994. in the basement of the continental margin of iberia active fault zones occur, showing different trends: NW-SE, NE-SW ... -
Miocene stable isotopes (8180, 813C), biostratigraphy and environments in the southern limb of the Albufeira syncline (Setúbal Peninsula, Portugal)
(Sociedad Geológica de España, 1996)Se estudia el contenido paleontológico (moluscos, ostrácodos, foraminíferos, vertebrados y pal/notloras) de dos secciones del Mioceno marino (Burdigaiiense ai FTortoniense inferior) de la cuenca inferior del Tajo (proximidades ... -
Análisis estadístico de caudales de crecida para la subcuenca EI Burguillo (río Alberche, Cuenca del Tajo)
(Sociedad Geológica de España, 1996)A statistical analysis of flood discharges has been carried out in the ÈÏ Burguillo subbasin (Alberche River, Tajo Basin, Centrai Spain), using parametric methods with only local data. Three series of peak discharges and ... -
El límite Cretácico/Terciario con foraminíferos planctónicos en Osinaga y Músquiz (Navarra, Pirineos)
(Sociedad Geológica de España, 1996)High resolution planktic foraminiferal biostratigraphy across the K/T boundary at Osinaga and Musquiz (Navarre, Pyrenees) allows us to recognise a small hiatus located just at the boundary. The hiatus affects the uppermost ... -
Manglares y modificaciones en líneas de costas tropicales (Bahía de Samaná, República Dominicana)
(Sociedad Geológica de España, 1996)The work on river mouths, karst forms and restingas in the Samaná bay allow us to follow the coastlines changes during the last200years. Mangrove formations /Rizhophora mangle L, Avicennia germinans L., Laguncularia ... -
Late Messinian coastal barrier and washover fan sedimentation in Sorbas (SE Spain)
(Sociedad Geológica de España, 1996)Deposition of washo ver fans in coastal settings are related to accommodation space, slope of the basin margin, and coeval changes of sea level. Some preliminary models of development and stacking of sand bodies are presented -
Evolución desde la diagénesis temprana al metamorfismo de los nodulos edáficos del grupo Urbión. Cretácico inferior. Cuenca de Cameros, La Rioja
(Sociedad Geológica de España, 1996)Pedogenetic carbonate nodules are a common feature in most of the depositional sequences of the Late Jurassic-Early Cretaceous Cameros Basin. This study deals with postsedimentary history (from early diagenesis to metamorphism) ... -
Importancia de la bioerosión en ostrácodos actuales del litoral de Huelva (SW España)
Ruiz Muñoz, Francisco (Sociedad Geológica de España, 1996)
The analyses of 69 samples from the Huelva littoral (SW Spain) leads to establish the importance of the b/oerosion phenomenes in the ostracod population. Three evidences of organic interaction has been found, according to ... -
Lignitos uraníferos de Calaf: Estudio cinético de lixiviación en medio bicarbonatado
(Sociedad Geológica de España, 1996)Humic acids contained in lignites ha ve hihg capacity to link with uranil ion and other heavy metals. The aim of this paper is to study the uranil-1 ignite link and the determination of the funtional groups which participate ... -
Características composícionales y procesos de evolución magmàtica en el Complejo Volcánico Central (I y II) de Fuerteventura (Islas Canarias)
(Sociedad Geológica de España, 1996)The Central Volcanic Complex / (CVC-I) consists mainly of mildly alkaline basalts, many of them ankaramitic. The compositional differences observed are explained by fractionation and extraction (rates between 20% and 30%) ... -
Estructuras sedimentarias de deformación (sismitas) inducidas por licuefacción con un simulador de terremotos
(Sociedad Geológica de España, 1996)This study is a first attempt to reproduce se¡smites in laboratory using a shaking table and natural sediments. The deformation linked to liquefaction-fluidization processes has been analysed, contlnously controlling the ... -
Dos nuevos yacimientos con graptolitos silúricos en la región de Alange (Badajoz)
(Sociedad Geológica de España, 1996)Two new fossil localities yielding graptolites of the, (undgreni and leintwardinensis biozones (early Homerian and basal Lùdfordiàn, respectively) are studied from the Al an gè region, which lies on the southernmost part ... -
Consideraciones sobre las aguas termommerales del acuífero del Cabero d'Or (Alicante)
Andreu Rodes, José Miguel; Cerón García, Juan Carlos; Pulido Bosch, Antonio; Estévez, Antonio (Sociedad Geológica de España, 1996)
The principal physico-chemical characteristics of some thermomineral waters of Cabego d'Or aquifer are studied. The waters have a temperature between 27-38 °C and they are calcium-sulphate type. The high concentrations of ...
