Tephra glass chemistry provides storage and discharge details of five magma reservoirs which fed the 75 ka Youngest Toba Tuff eruption, northern Sumatra

• Main Authors: Pearce, Nicholas J.G., Westgate, John A., Gualda, Guilherme A.R., Gatti, Emma, Muhammad, Ros Fatihah
• Format: Article
• Published: Wiley 2020
• Subjects: Q Science (General); QE Geology
• Online Access: http://eprints.um.edu.my/25403/; https://doi.org/10.1002/jqs.3149

The Youngest Toba Tuff contains five distinct glass populations, identified from Ba, Sr and Y compositions, termed PI (lowest Ba) – PV (highest Ba), representing five compositionally distinct pre-eruptive magma batches that fed the eruption. The PI–PV compositions display systematic changes, with hi...