Thesis Collection
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Browsing by Author "Rodas, M."
Now showing items 1-10 of 10
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Caracterización de la materia carbonosa grafitizada en el Silúrico inferior del sinclinal de Serrazín, Sistema Central, y su aplicación a la determinación del metamorfismo de bajo grado del área
(Sociedad Geológica de España, 1990)The lower part of the Silurian Serrazin Slates contain an exceptional accumulation of carbonaceous matter in the Serrazín Syncline (Segovia). Low grade Hercynian metamorphism had it transformed into graphite and/or meta ... -
Estudio de los procesos de septaritización, cementación y reemplazamiento de las concreciones carbonatadas asociadas al yacimiento de piritas de Navajún. Cuenca de Cameros (La Rioja)
(Sociedad Geológica de España, 1996)Associated to the Navajun pyrite deposits (Cameros basin. North Spain), it appears a lutite horizont with decimetric carbonate concretions normally septarized. This septarization occured during early diagenesis, and it ... -
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) ... -
La evolución temporal de los minerales de la arcilla en el Pérmico superior y Triásico de Cuenca y Teruel (Cordillera Ibérica SE)
(Sociedad Geológica de España, 1994)Clay mineralogy of the continetal and shallow marine sediments of Permian and Triassic age of the SE Iberian Ranges is a neglected subject. The present study shows the temporal variations of clay mineral assemblages and ... -
Formación de grafito a partir de fluidos: La mineralización de Huelma (Jaén)
(Sociedad Geológica de España, 1996)The volcanic-hosted graphite mineralization of Huelma Qaén) has been studied in order to stablish the mineralogical characteristics and mechanisms of formation. The graphite is highly ordered (as revealed by XRD and Raman ... -
Las cloritas de los cuerpos pegmatíticos del plutón de La Cabrera (Sistema Central Español)
(Sociedad Geológica de España, 1996)The chlorites included within the pegmatitic bodies of the La Cabrera pluton (Spanish Central System) have been studied in order to stablish their characterization, clasification and relationship with other minerals. Two ... -
El metamorfismo en la Cuenca de los Cameros. Geocronología e implicaciones tectónicas
(Sociedad Geológica de España, 1991)A case of hydrothermal metamorphism is described from the Cameros Basin along the rio Cidacos transect. The highest grade is reached at the base of the Urbión Group, a fluvial sequence Upper Jurassic to Lower Cretaceous ... -
Nuevos datos geológicos sobre las mineralizaciones de grafito de la Banda Metamorfica de Aracena, Huelva (Macizo Ibérico Meridional)
Fernández Rodríguez, Carlos
; Fernández Caliani, Juan Carlos; Miras, A.; Barrenechea, J. F.; Luque, F. J.; Rodas, M. (Sociedad Geológica de España, 1996)
In this work a detailed geological map o f the graphite mineralizations of the Aracena Metamorphic Belt (SW Iberian Massif) is shown. Three types of mineralizations have been distinguished according to lithostratigraphic ... -
Origen de las piritas de la cuenca de Cameros, (La Rioja)
(Sociedad Geológica de España, 1995)The pyrite mineralizations of the Cameros basin has been traditionally interpreted as diagenetic. On the basis of trace element content, S isotopes study, pyrite inclusions and geologic observations, the pyrite crystals ... -
Posibilidades cerámicas de las pizarras Paleozoicas de Almuradiel (Ciudad Real)
(Sociedad Geológica de España, 1995)Raw materials used in the manufacturing of white stoneware mainly consist of illitic and kaolinitic clays, containing <7.5% of iron oxides. Quarlzitic sands and feldspars are commonly added to improve their physico-chemical ...
