Magma mixing in Vulcanello (Vulcano Island, Italy)
DOI:
https://doi.org/10.3989/egeol.08641458Keywords:
Shoshonites, latites, magma mixing, Vulcano, ItaliaAbstract
Volcanic activity in Vulcano starts about 350 ka ago and continues up to present day with the development of thre main episodes corresponding to the calderas of Piano and La Fossa, and Vulcanello. These cover a compositional range from rhyolitic to trachybasaltic rocks. This lithological diversity is produced by different petrogenetic processes such as fractional crystallization, assimilation coupled to fractional crystallization (AFC), mixing, etc.
The eruption of Vulcanello area emitted trachyandesitic materials, including shoshonites and latites. A magma-mixing process is established between trachytes and shoshonites to origine latites. Trachytes and rhyolites are produced by fractional crystallization and by ACF processes (assimilation of sedimentary rocks) from trachyandesitic magmas.
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