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Multi-batch, incrémental assembly of a dynamic magma chamber : the case of the Peninsula pluton granite (Cape Granite Suite, South Africa)
18 décembre 2012, par
The S-type Peninsula Pluton (South Africa) exhibits substantial compositional variability and hosts a large variety of mafic and felsic magmatic enclaves with contrasting textures and compositions. Moreover, the pluton is characterized by mechanical concentrations of K-feldspar megacrysts, cordierite and biotite, generating a complex array of magmatic structures including schlieren, pipes, and spectacular sheeted structures. Chemical evidence indicates that the pluton is constructed (...)