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Geogaceta -- Nº 08, (1990)
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Recent Submissions
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Turbiditas oolíticas cretácicas al norte de Vélez Blanco (Subbético interno, provincia de Almería)
(Sociedad Geológica de España, 1990)In the Internal Subbetic Middle and Upper Cretaceous oolite turbidites occur. Two main type of facies are present: 1) Conglomeratic beds (A2 facies) composed of clasicts of very different lithologies and ages, and 2) Oolit ... -
Trilobites y goniatites de la cuenca carbonífera de los Santos de Maimona: deducciones bioestratigráficas
(Sociedad Geológica de España, 1990)In the Santos de Maimona Carboniferous Basin (Badajoz, SW of Spain), trilobites and the goniatites have been distinguished for first time, given a new significant biostratigraphy precision. The recognised trilobites species ... -
Tectónica y sedimentación en el margen oeste del «rift» terciario del valle de Ayora-Cofrentes (Valencia)
(Sociedad Geológica de España, 1990)The Ayora-Cofrentes valley (Valencia) presents a rift-like structure of probable Lower Tertiary age. Its western margin is formed by a system of lystric faults with a vertical displacement of 300 m. This main fault is ... -
Rasgos estructurales de la Sierra de Salinas y zona de los Mallos (Sierras Exteriores, Prepirineo, provincias de Huesca y Zaragoza)
(Sociedad Geológica de España, 1990)The structure of Sierra de Salinas and the area of «los Mallos» (External Sierras, Southern Pyrenees) is owed to the thrusting (overtsep sequence) and simultaneous folding (flexure) of the whole structure. The setting and ... -
Preservación de estructuras internas y externas primarias en pillow-lavas del Paleozoico medio-superior del Sarrabus (SE de la isla de Cerdeña, Italia)
(Sociedad Geológica de España, 1990)This note describes the presence of pillow-lava within the palaeozoic marine materials (Silurian-Devonian) of Sarrabus region, SE Sardinia, Italy. Pillow structures are developed on basalts, and some primary structures ... -
Observaciones sobre algunos Diques de Pórfido NS del sector de Alpedrete (Sistema Central)
(Sociedad Geológica de España, 1990)Some NS-oriented porphyry dikes are studied in the area of Alpedrete in the Spanish Central System. These dikes display several structures indicative of the following: direction and sense of the magmatic flow (sheared ... -
Nuevas aportaciones al conocimiento geológico de la Ría del Eo (NW España)
(Sociedad Geológica de España, 1990)This paper deals with the geology of the Ría del Eo, preferently its eastern side. We have mapped in a more detailed way the different units of the Serie de los Cabos, not distinguished yet in this area. We propose a ... -
La transgresión del Cenomaniense superior en el Prebético
(Sociedad Geológica de España, 1990)An assymetrical megasequence of uppermost Cenomanian-Turonian (?) age is delimited and studied in Prebetic area: After a rapid transgression (which produces platform drowning), a more pausible and progressive progradation ... -
Las unidades tectosedimentarias del margen septentrional de la Depresión del Ebro en el sector Luesia-Riglos (provincias de Zaragoza y Huesca)
(Sociedad Geológica de España, 1990)At the septentrional margin of the Ebro Basin, the conglomeratic facies of Uncastillo Formation correspond to two complex cyclic Tectosedimentary Units (TSU U1 and U2). Towards the West, these TSU lie on Campodarbe Formation ... -
Las diaclasas y diques en el Plutón de Caldas de Reyes (Provincias de La Coruña y Pontevedra. España)
(Sociedad Geológica de España, 1990)This paper deals with the role of the arrangement of joint systems and dykes of the latehercynian Caldas de Reyes granitic pluton. Despite of the role of late and posthercynian deformation phases on the genesis of the joint ... -
Sobre la conexión entre la Depresión de Guadix-Baza y el Corredor del Almanzora, (Cordilleras Béticas, Andalucía Oriental)
(Sociedad Geológica de España, 1990)The analysis of the literature about the Guadix-Baza Basin, shows some doubts and disputations concerning the connection between the basin and the open sea through the Almanzora Corridor. This connection is considered to ... -
Sequence stratigraphy and facies analysis of the Arro-Broto Turbidite System in the Castisent-Broto depositional sequence of the Hecho Group (Eocene, South-central Pyrenees)
(Sociedad Geológica de España, 1990)El presente artículo se basa en un detallado análisis de las facies del Sistema Turbidítico de Arro-Broto. Los autores distinguen cinco unidades en la Sequencia Deposicional de Castisent-Broto. La unidad superior (E) ... -
Sedimentación marina somera en el devónico del anticlinorio de Puebla de Guzmán, Faja Pirítica Ibérica
Moreno Garrido, María Carmen
; Sáez Ramos, Reinaldo (Sociedad Geológica de España, 1990)
The sedimentary nature of the rocks outcroping near the Virgen de la Peña hermitage suggests a shallow marine sedimentation, with a main influence of swell, almost for a part of the PQ Group of the Iberian Pyrite Belt in ... -
La Formación Marín: redepósito de material jurásico durante el Mioceno (zona Subbética)
(Sociedad Geológica de España, 1990)An important volume about resedimented materials during the Burdigalian has been confused with the oolite Dogger even today. This article determines the Marin Formation, litostratigraphic unit that includes these rocks. ... -
«La Falla de Urriza (Pirineo Occidental): Neotectónica en materiales del cretácico superior del norte de Navarra»
(Sociedad Geológica de España, 1990)In the north of Navarra (Western Pyrenees), subvertical folds with characteristic density of diaclases in the hinge zone outcrop in upper cretaceous beds. Its genesis has been associated to a sinistral wrench affecting ... -
La estructura del anticlinal de La Massana (Hercínico del Pirineo central)
(Sociedad Geológica de España, 1990)Detailed work on the La Massana anticline reveals that it represents a structural unit bounded by late thrusts. Its internal structure results from the superposition of premainphase and mainphase folds. This complex structure ... -
Implicaciones de los enclaves máficos microgranulares en la petrogénesis de los granitoides calcoalcalinos hercínicos
Castro Dorado, Antonio; Moreno-Ventas Bravo, Ignacio; Rosa Díaz, Jesús de la (Sociedad Geológica de España, 1990)
Hercynian calc-alkaline granitoids are characterized by the presence of microgranular magmatic enclaves of tonalitic to diorite composition. Recent studies of these enclaves and host granitoids reveal that they were generated ... -
Granates en el Plutón de Caldas de Reyes (Provincia de La Coruña y Pontevedra. España)
(Sociedad Geológica de España, 1990)In the late-hercynian calc-alkaline pluton of Caldas de Reyes, garnets occur scarcely in the most evolved facies. In this paper we intend to characterize their typology. We have been able to distinguish two different types ... -
Formación de una cubeta sinclinal en un contexto extensivo: la cuenca miocena de Rubielos de Mora (Teruel)
(Sociedad Geológica de España, 1990)The Rubielos de Mora basin developped during early and middle Miocene in an extensional context Mesozoic layers beneath the basin are synclinally folded and Miocene beds are located in the core of the fold and show an ... -
Extensión de la unidad «Limos y areniscas abigarrados de Torete» al sector NW de la Cordillera Ibérica (provincias de Soria y Guadalajara) (1)
(Sociedad Geológica de España, 1990)«Torete variegated Silstones and Sandstones» Formation extends to the central System surroundings. The Fm. is characterised within the region, permitting the linkage to the Muschelkalk sedimentary cycle, instead of Buntsandstein
