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Los diques alcalinos de pórfidos monzo-sieníticos del Sistema Central Español: relación con los diques lamprofídicos acompañantes

Orejana García, David and Villaseca González, Carlos (2006) Los diques alcalinos de pórfidos monzo-sieníticos del Sistema Central Español: relación con los diques lamprofídicos acompañantes. Geogaceta, 40 . pp. 103-106. ISSN 0213-683X

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Abstract

The alkaline monzo-syenitic porphyries from the Spanish Central System (SCS) show a heterogeneous
composition ranging from basic to acid terms which give rise to major and trace element compositional
trends in accordance with fractional crystallization of amphibole, plagioclase, biotite, alkaline feldspar, Timagnetite
and apatite. The whole-rock geochemistry of the basic porphyries shows clear similarities with
respect to the SCS isotopically enriched alkaline lamprophyres, indicating that a genetic link between both
groups of dykes might exist. This relationship would probably represent an origin of the monzo-syenitic
porphyries after differentiation of parental lamprophyric magmas due to fractional crystallization


Item Type:Article
Uncontrolled Keywords:Monzo-syenitic porphyries, Lamprophyres, Crystal fractionation, Spanish Central System
Subjects:Sciences > Geology > Petrology
ID Code:12393
Deposited On:10 Mar 2011 10:35
Last Modified:06 Feb 2014 09:23

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