Los niveles de gabros bandeados en el macizo ofiolítico Moa-Baracoa (Cuba). Gabros característicos de cumulados de ofiolitas de zona de suprasubducción
Por:
Proenza J., Melgarejo J.C., Gervilla F., Solé J.
Publicada:
1 ene 1999
Resumen:
Gabbros outcrop, mainly bedding and isotropic gabbros, are extended into the Moa-Baracoa ophiolite complex (NE Cuba). Sequence of beding gabbros consists of gabbronorites and olivine adcumulative-mesocumulative gabbros. Crystalization order on studied laminas makes evident primary crystalization of clinopyroxenes as regards plagioclase. Mineralogical composition of basal cumulatives of the Moa-Baracoa ophiolite complex is differs from low-pressures MORBS crystalization derivatives, and is similar ti those located in a back-arc. All these features are consistent with basal cumulatives located in suprasubduction zone ophiolites.