Dispersal of ash in the great Toba eruption, 75 ka
Document Type
Article
Publication Date
1-1-1987
Abstract
One of Earth's largest known eruptions, the Toba eruption of 75 ka, erupted a minimum of 2800 km 3 of magma, of which at least 800 km 3 was deposited as ash fall. This ash may be entirely of coignimbrite origin and dispersed widely because of high drag coefficients on the predominantly bubble-wall shards. Shards of this shape are broken from the walls of spherical vesicles, which formed in high abundance in isotropic strain shadows near phenocrysts in this crystal-rich magma. © 1987 Geological Society of America.
Publication Title
Geology
Recommended Citation
Rose, W.,
&
Chesner, C.
(1987).
Dispersal of ash in the great Toba eruption, 75 ka.
Geology,
15(10), 913-917.
http://doi.org/10.1130/0091-7613(1987)15<913:DOAITG>2.0.CO;2
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/12291