Thesis Collection
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Browsing by Author "Cubas, C. R."
Now showing items 1-15 of 15
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Análisis de enjambres de cliques radiales utilizando un método matemático
(1991)It is proposed, a computer program to help to the interpretation of radial dykes swarms and locate the possible emission zones, using the analysis of theoretical intersection of the dykes, considered as straight lines on ... -
Características composicionaies y procesos de evolución magmàtica en el complejo volcánico Sur - II de Fuerteventura (Islas Canarias)
(Sociedad Geológica de España, 1996)The Southern Volcanic Complex II consists mainly of basalts with some trachybasalls and basaltic trachyandesltes. Its lower sequence is formed by middle alkaline rocks whilst in the upper one only m ild ly alk ali H y + O ... -
Características composicionales del Complejo Volcánico Sur I de Fuerteventura (Islas Canarias)
(Sociedad Geológica de España, 1995)The Southern Volcanic Complex I consists mainly of basalts with scarce felsic members. On the basis of chemical and mineralogical compositional features two groups could be considered. Both groups are alkaline, the first ... -
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%) ... -
Características composicionales y procesos de evolución magmàtica en el complejo volcánico sur-lll de Fuerteventura (Islas Canarias)
(Sociedad Geológica de España, 1996)The Southern Volcanic Complex III is form ed by basalts, a lesser am o u n t o f trachybasalts and some scarce trachytes, a ll o f them m ild ly alkaline. Crystal fra ction ation w a s in an early stage, controle d by ... -
Características generales del Edificio Norte de la Serie I de Fuerteventura
(Sociedad Geológica de España, 1992)The North Edifice is one ofthe three main edifices identified in the Old Basaltic Series of Fuerteventura. This edifice is formed by Lower, Intermedium and Upper Series. The oldest one crops out on the low western side ... -
Distribución de los diques sálicos del Norte de la isla de La Gomera
(Sociedad Geológica de España, 1999)The distributidn of felsic dykes on La Comera northern area corresponds to several swarms. The first radial dyke swarm is centered on the Tamargada area. The second radial dyke swarm center, located farther west, south of ... -
Edad de los diques sálicos del Norte de la isla de La Gomera
(Sociedad Geológica de España, 2001)Several trachytic and phonolitic, radial and conical dyke-swarms crop out on the La Gomera northern region. The first age data obtained situate the intrusion episodes coinciding in time with the extrusion of the Old Basalts. ... -
Edad de los domos sálicos de la isla de La Gomera
(Sociedad Geológica de España, 2002)The new radiometric data from felsic domes on La Comerá allow to separate two different felsic both intrusive and extrusive episodes on the island. The early one, upper Miocene in age, includes the domes on the eastern ... -
El edificio sur (Jandía) de la serie I de Fuerteventura: rasgos generales
(Sociedad Geológica de España, 1991)The Jandia is one of the three main edifices identified in the Old Basaltic Series of Fuerteventura. lt shows now a semicircular shape with a nortwards facing opening. This large volcano built up by lava flows and pyroclastics ... -
Edificios volcánicos en la Serie I de Fuerteventura: Rasgos generales del edificio central
(Sociedad Geológica de España, 1990)The Old Basaltic Series in Fuerteventura is formed by three main edifices: Northern, Central and Southern (or Jandía) Edifices. The Central Edifice, a shield volcano, extends from El Jable towards Valles Ortega area forming ... -
El Olivino de las rocas volcánicas miocenas de la isla de Fuerteventura (Islas Canarias)
(Sociedad Geológica de España, 1996)Olivine phenocrysts are always present in the Miocene basalts of Fuerteventura, whilst they are scarce in the trachybasaltic types. Notwithstanding, olivine is common as part of the groundmass in these trachybasalts. This ... -
El Piroxeno de las rocas volcánicas miocenas de la isla de Fuerteventura (Islas Canarias)
(Sociedad Geológica de España, 1996)Pyroxene (dio psid e o r augite) is p re se n t in a ll rocks o f th e M io c e n e V o lc a n ic C om plexes on Fuerteventura. Pyroxene phenocrysts are specially abundant in basalts, in which they represent a third of all ... -
Geometría del enjambre de diques cónicos de Vallehermoso La Gomera (Islas Canarias)
(Sociedad Geológica de España, 1999)A mainly phonolitic, 10 km in diameter, cone-sheet complex crops out on the northern area of La Comera. The swarm intrudes into the Basal Complex, The Old Basalts and other rocks of the Trachytic-phonolitic Complex to which ... -
Serie Basáltica Antigua Inferior en el sector de Hermigua. Isla de la Gomera
(Sociedad Geológica de España, 1994)Lower Old Basaltic Series had only been described W of the Basal Complex in Alojera -Tazo area but it is also well exposed in other zones on Comera as in Hermigua area E of the Basal Complex. Here, the basaltic lava flows ...
