Geoquímica de las ortoanfibolitas y rocas metabásicas de Zarza la Mayor-Ceclavín (Cáceres, España) Geochemistry of the orthoamphibolites and metabasic rocks from Zarza la Mayor-Ceclavín (Cáceres, Spain)

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.