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Volcano > Tephra
The following information is about Tephra.
Tephra Defined
Solid material of all sizes explosively ejected from a volcano into the atmosphere. (Teacher's Packet)
Tephra is the general term now used by volcanologists for airborne volcanic ejecta of any size. Historically, however, various terms have been used to describe ejecta of different sizes. Fragmental volcanic products between 0.1 to about 2.5 inches in diameter are called lapilli; material finer than 0.1 inch is called ash. Fragments larger than about 2.5 inches are called blocks if they were ejected in a solid state and volcanic bombs if ejected in semi-solid, or plastic, condition. (Tilling, Heliker, and Wright, 1987)
See: Ash, Lapilli, Blocks, Bombs.
This definition is in context to Volcano. See more contextual defintions for Tephra.
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Off-site Tephra Links, User Submitted
The following links have been collected through user bookmark submission in the Tephra category. Please note, because these resources are off-site we cannot guarantee the accuracy or quality of any information.
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- Tephra: Tephra is a typeface designed by 8vo.
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If you would like to find additional social bookmark based links on the topic of we recommend the Open Tag Directory > Tephra. If you would like to find related tags we recommend Tag Patterns > Tephra
Off-site Tephra Research Links
If you still need additional information on Tephra then we suggest the following off-site resources. Please note, because these resources are off-site we cannot guarantee the accuracy or quality of any information.
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