Geoquímica de las ortoanfibolitas y rocas metabásicas de Zarza la Mayor-Ceclavín (Cáceres, España)
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Abstract
El stock granodiorítico-tonalítico de Zarza la Mayor (noroeste de Cáceres,
España) está bordeado por afloramientos pequeños y discontinuos de
rocas metabásicas de afinidades gabroicas a dioríticas, con texturas entre
grano fino-medio y porfídicas. El presente estudio geoquímico muestra que
estas rocas son composicionalmente equivalentes a basaltos subalcalinos
de características toleíticas, mientras que los diagramas de discriminación
tectonomagmática las sitúan en un contexto tectónico intraplaca
The granodioritic-tonalitic stock of Zarza la Mayor (western central Spain) is bordered by small, discontinuous outcrops of low grade metabasic rocks with gabbroic to dioritic affinities, ranging from fine-medium grained to porphyritic in texture. The present geochemical study demonstrates that these rocks are equivalent in composition to subalcalic tholeiitic basalt while tectono-magmatic discrimination diagrams place them in a within-plate tectonic environment
The granodioritic-tonalitic stock of Zarza la Mayor (western central Spain) is bordered by small, discontinuous outcrops of low grade metabasic rocks with gabbroic to dioritic affinities, ranging from fine-medium grained to porphyritic in texture. The present geochemical study demonstrates that these rocks are equivalent in composition to subalcalic tholeiitic basalt while tectono-magmatic discrimination diagrams place them in a within-plate tectonic environment
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