Aspectos composidonales de los piroxenos ígneos del magmatismo básico del sinclinal de Almadén. Implicaciones petrogenéticas

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dc.contributor.authorHigueras, Pablo L.
dc.contributor.authorMorata Céspedes, Diego
dc.date.accessioned2017-07-12T09:39:49Z
dc.date.available2017-07-12T09:39:49Z
dc.date.issued1994
dc.description.abstractChemical composition of igneous pyroxenes in the basic rocks from the Almadén syncline shows important differences between basaltic lavas and olivine diabases (Silurian to Devonian in age), and quartzdiabases on the other hand. Higher CaO, Al203 and Ti02 and lower Si02 contents in pyroxenes from the first group are characteristics of alkaline magmas. Lower CaO, Al203 and Ti02 and higher Si02 in pyroxene from quartzdiabases are indicative of a subalkaline (tholeiitic) affinity. These chemical differences are consistent with whole-rock chemistry, with higher Nb/Y and (La/Lu)cn ratios in the first group. Alkaline and tholeiitic magmatism are a consequence of different partial melting rates, lower for the alkaline liquidses_ES
dc.identifier.urihttp://hdl.handle.net/10272/13926
dc.language.isospaes_ES
dc.publisherSociedad Geológica de Españaes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.otherWith in-plate continental magmatismes_ES
dc.subject.otherPaleozoices_ES
dc.subject.otherPyroxeneses_ES
dc.subject.otherAlmaden synclinees_ES
dc.titleAspectos composidonales de los piroxenos ígneos del magmatismo básico del sinclinal de Almadén. Implicaciones petrogenéticases_ES
dc.titleCompositional constraints of igneous pyroxenes from the basic magmatism in the Almadén syncline. Petrogenetic implicationseng
dc.typejournal articlees_ES
dspace.entity.typePublication

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Geogaceta -- Nº 16, (1994)