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    Sub-volcanic crystallization at Sete Cidades volcano, São Miguel, Azores, inferred from mafic and ultramafic plutonic nodules

    Suites of coarse-grained clasts (“plutonic nodules“) within the scoria of two separate mafic post-caldera parasitic vents, on Sete Cidades volcano, are described. These involve dunites, wehrlites, olivine clin...

    M. Mattiolil, B. G. J. Upton, A. Renzulli in Mineralogy and Petrology (1997)