Probing the accumulation history of the voluminous Toba magma

Jorge A. Vazquez, Mary R. Reid

Research output: Contribution to journalArticlepeer-review

125 Scopus citations


The age and compositional zonation in crystals from the Youngest Toba Tuff record the prelude to Earth's largest Quaternary eruption. We used allanite crystals to date and decipher this zoning and found that the crystals retain a record of at least 150,000 years of magma storage and evolution. The dominant subvolcanic magma was relatively homogeneous and thermally stagnant for ∼110,000 years. In the 35,000 years before eruption, the diversity of melts increased substantially as the system grew in size before erupting 75,000 years ago.

Original languageEnglish (US)
Pages (from-to)991-994
Number of pages4
Issue number5686
StatePublished - Aug 13 2004

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