INVESTIGADORES
REMESAL Marcela Beatriz
congresos y reuniones científicas
Título:
The Mesozoic Arc Volcanism at Northern Millerand Island. Marguerite Bay, Antarctic Peninsula
Autor/es:
REMESAL, M.B.; CERREDO, M.E. ; TASSONE, A.A.
Lugar:
Buenos Aires
Reunión:
Congreso; 6º Congreso de Mineralogía y Metalogenia; 2002
Institución organizadora:
Departamento Ciencias Geológicas - FCEN - UBA
Resumen:
Along the northern shoreline of Millerand Island a widespread volcanic unit -mainly composed of rhyolithic/ rhyodacitic crystalline and lithic tuffs and andesitic lava flows- rests unconformably over heterogeneous plutonic rocks of probably Early Jurassic age. A compositionally homogeneous unit of monzo- and syenogranites intrudes the volcanics. A set of rhyolite dikes predates granite emplacement. A compositionally diverse group of mafic dykes represents the final magmatic activity in this area
