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Browsing Geogaceta -- Nº 17, (1994) by Issue Date
Now showing items 1-20 of 41
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Yacimientos de vertebrados en los materiales Paleógenos de la zona de Ulldemolins y Conca de Barbera, (Cuenca del Ebro, Tarragona): significado Estratigräfico
(Sociedad Geológica de España, 1994)The Ulldemolins Complex, which is characterized by different lithotypes, contains several types of fossil remains such as ostracoda, gastropoda, charophyta and micromammalia. This fossil association suggests that the Complex ... -
Distribución y geometría del relleno sedimentario Neógeno y Cuaternario de la Fosa del Baix Ebre, Tarragona
(Sociedad Geológica de España, 1994)The Baix Ebre graben constitutes a small part of the western Mediterranean graben system related with the western European rift which is superimposed to the Alpine structural trend, in the Baix Ebre graben other small ... -
Structure, cinématique et chronologie des déformations dans la dorsale du Haouz (Rif, Maroc)
(Sociedad Geológica de España, 1994)The complex thrust-slice structure of the Haouz Mountains was formed during the Neogene in several phases, in which we recognize: a- Paroxysmal tectonic events, occurred in the Early Miocene, responsible of the formation ... -
¿Existe un cuerpo peridolítico entre dos fallas extensionales en el margen noroccidental del Mar de Alborán?
(Sociedad Geológica de España, 1994)An analysis of multichanell seismic reflection profiles leads to define the main extensional features in the nortwestern margin of the Alboran Sea. Two strong (high amplitude) characteristic reflectors have been interpretated ... -
La falla normal de bajo ángulo de Tejeda: un ejemplo de la deformación miocena en las Béticas centrales
Alonso Chaves, Francisco Manuel
; Orozco, Miguel; García Dueñas, V.; Mayoral Alfaro, Eduardo (Sociedad Geológica de España, 1994)
The existence of a major extensional fault in Sierra Tejeda, Central Betics, developed during the middle Miocene, is evidenced. The Tejeda, Venta de Palma, Bentomiz and Alcaiceria units make up the hanging-wall o f the ... -
Le Bassin pliocène intramontagneux de Tirinesse et son mode d'ouverture (Rif interne, Maroc)
(Sociedad Geológica de España, 1994)Tirinesse basin is opened by two NE-SW and NW-SE high angle normal fault systems. These contemporaneous faults belong to the iate-Piiocene rifting stage with bidirectional extensionai stress field -
Fábricas cristalinas del yeso secundario de reemplazamiento de glauberita: aplicación en prospección de sulfato sódico
(Sociedad Geológica de España, 1994)Many sodium sulphate formations deposited during the Miocene in the sedimentary basins of the Iberian Peninsula are currently exposed to the weathering action on the surface or dose subsurface. A common replacement product ... -
Evolution tectono-séd i mentai re alpine autour de l'Arc de Gibraltar et mise en évidence de la cinématique de remontée d'un dôme de l'Asténosphère depuis le Jurassique jusqu'au Néogène
(Sociedad Geológica de España, 1994)The peridotites of the betico-rifain internal zone can be explained by the rise again of the subcrustal domein the old Alboran slab. The tectono sedimentary evolution of rifa in internal and external zone, respectively at ... -
Los careos y su impacto ambiental
(Sociedad Geológica de España, 1994)The relationships existing between acequias and springs are studied. The "careos" is a very old system of artificial recharge practiced in the Alpujarra region. The data obtaine from a tracer test allow us to propose a ... -
Modelación matemática de la recarga de terrenos kársticos a través del drenaje de las estalactitas
(Sociedad Geológica de España, 1994)In the Karst, the drainage of the stalactites can provide information about the laws that govern percolation. The viability of a percolation simulation with analytic models is studied. From the results obtained in Baradia ... -
Consideraciones sobre la recarga en el Karst a través del estudio de las filtracciones en cuevas
(Sociedad Geológica de España, 1994)In the present paper we study the percolation in the karst as per the stalactites hydrographic analysis. We analyse some ofthe mechanisms related to infiitrattion, taking Into account the observations obtained in several ... -
Alineaciones de centros volcánicos en la isla de Tenerife
(Sociedad Geológica de España, 1994)A mathematical method has been used to determine the alignments of effusive centers in the Recent Series of the Tenerife island. The strike of these lineations varies from one sector to another, in this way, on the ... -
Relación estructural entre los cuerpos peridotíticos situados al Norte y al Sur del Estrecho de Gibraltar
(Sociedad Geológica de España, 1994)The peridotite bodies of the Bedes and Rif, on either side of the Strait of Gibraltar, are intercaled among the highest units of the Alpujarride complex. Before Miocene times, they must have constituted an uitramaficsiab ... -
Les failles normales a faible pendage du Rif interne (Maroc) et leur effet sur l'amincissement crustal du domaine D'Alboran
(Sociedad Geológica de España, 1994)Several low angle, shallow dippinng normal faults are described from the internal domaine of the Rif chain. They dip gently towards the Alboran sea and cause important omissions in the stratigraphictectonic pile. These ... -
La Sierra Alhamilla (Beticas orientales), una ventana extensional abierta en el basamento de la cuenca Miocena de Alboran
(Sociedad Geológica de España, 1994)The Alpujarride/Nevado-Filabride boundary exposed in the Sierra Alhamilla is a detachment fault belonging to the Fiiabres Extensional System (FES), a pronouncedly asymmetric system with a westsouthwestward transport ... -
El despegue extensional de Lahsene y los jirones de serpentinitas del anticlinal de Taryat (Melilla, Rif)
(Sociedad Geológica de España, 1994)The Taryat anticline, between Melilla and the Cabo Tres Forcas, folds an extensional detachment fault with SW transport sense. The fault is sealed by Tortonian marine sediments that were also folded. The hanging wall of ... -
Aminocronología de los depósitos del Pleistoceno Medio de Redueña (Madrid)
(Sociedad Geológica de España, 1994)This paper deals with Redueña alluvial fan deposits amino acid (aspartic acid and leucine ) racemization dating. Redueña deposits and faunal and archaeological Middle Paleolithic remains can be correlated with the 8th ... -
Mise en evidence d'une structure diapirique déformée au niveau de la partie basale du Massif des Beni-Bousera (Rif interne, Maroc)
(Sociedad Geológica de España, 1994)La région basale du massif uitrabasique des Beni-Bousera correspond pétrographiquement à des lherzolites à spine/le avec des textures à gros grain et porphyrodastique à gros grain. Les données microstructurales et de ia ... -
Evolution Néogène du bassin de Tétouan-Martil, Rif septentrional, Maroc
(Sociedad Geológica de España, 1994)Tetouan-MartHpost-nappes basin is opened by two rifting stages: the first in late Oligocene-Burdigalian times, is accompanied by ductile normal faults in Aquitanian-Burdigalian rocks; the second of post Burdigaiian and ... -
La distension de L'Oligocène supérieur à Burdigalien dans les nappes Ghomarides (Rif interne septentrional, Maroc)
(Sociedad Geológica de España, 1994)The Ghomarides nappes are overlain by late OUgocene-eariy Burdigaiian moiassic deposits. These deposits show three successive extensional stages wich are oriented: 1- NE-SW during late Oligocene. 2- NW-SE duringAquitanian. ...
