Geogaceta -- Nº 04, (1988)
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Identificación de unidades litoestratigráficas del Cretácico en diagrafías
(Sociedad Geológica de España, 1988)An approach to the establishment of different early Upper Cretaceous Lithostratigraphic Units caracteristics in the diagraphies of a log drilled in the Iberian Ranges -
Estructura y evolución del borde sur-occidental de la Fosa de Calatayud-Daroca
(Sociedad Geológica de España, 1988)The Calatayud-Daroca Basin is located in the Iberian Range. The SW margin of this Basin is the Jiloca fault. The evolution of the Basin during the Miocene, was conditioned by dextral slip on this fault. During the Pliocene ... -
Estructuras distensivas y procesos metamórficos asociados en la Zona de Cizalla de Berzosa
(Sociedad Geológica de España, 1988)Evidence of a late-metamorphic extensional shear activity has been found along the central part of the Berzosa Shear Zone, as evidenced by «S-C» structures. This event could be correlated with a period of regional extension, ... -
El nivel con carbonatos del «Alcudiense superior» en el Area de Cabezarrubias-Hinojosas (Valle de Alcudia, Ciudad Real)
(Sociedad Geológica de España, 1988)The levels which contain carbonates are the essential ones both for litostratigraphic correlation and facies analysis in the Upper Proterozoic series of the Central Iberian zone. In this work, several carbonatic outcrops ... -
El límite meridional de la transgresión cenomaniense superior en la Cordillera Ibérica (Murcia, Albacete y Valencia)
(Sociedad Geológica de España, 1988)During Late Cenomanian, an Atlantic transgression occurs as a result of the Iberian Plate tilting. Its southern limit is recognized in the Murcia-Albacete-Valencia area, with continental sediments, which are dividing the ... -
Deformación de terrazas fluviales recientes en la franja costera cantábrica
(Sociedad Geológica de España, 1988)Evidence of faulting with displacements of several meters in a fluvial terrace 20 m above the present river level has been found in Polanco, near Santander. The site is located nead a diapir of Triassic clays and salts. ... -
Sobre la estructura del Antiforme de El Cardoso y el Sinforme de Majaelrayo y su relación con la Falla de Berzosa
(Sociedad Geológica de España, 1988)The El Cardoso Antiform and the Majaelrayo Synform are structures which were generated during the third hercynian deformation phase (F) and are cross-cut by the Berzosa Fault, a normal accident with a dextral wrench ... -
Relaciones químico-estructurales entre sulfosales de Bi, Sb, Ag en las mineralizaciones del Sistema Central (sectores Central y Oriental)
(Sociedad Geológica de España, 1988)Methodological aspects and results from the compositional-structural relationships of sulphosalts are summarized. These sulphosalts correspond to S-Bi-Ag and S-Sb-Ag systems presenting pseudoisometric characteristics. Attending ... -
Lacustrine diatomite deposits in the Madrid Basin (Central Spain)
(Sociedad Geológica de España, 1988)La parte superior de la Unidad Intermedia del Mioceno en el sector occidental de la Cuenca de Madrid contiene varios niveles diatomíticos, que consisten tanto en diatomitas casi puras como en calizas y margas con contenido ... -
La asociación magmática del Batolito de los Pedroches en la Zona de Pozoblanco (Córdoba-España)
(Sociedad Geológica de España, 1988)Two major intrusion events have been recognized in the area studied. The first one is represented by the granodioritic rocks of Los Pedroches Batholith while the second one corresponds to the intrusion of the granites of ... -
Isótopos estables de carbono y oxígeno de los rellenos de calcita (falsa ágata) y su interés paleoambiental
(Sociedad Geológica de España, 1988)The isotopic composition of modern calcite fills (onyx marble) in fractures and related caves is studied. Carbon and oxygen stable isotopes in this material are similar to the vadose speleothems (stalactites and stalagmites) ...