microtephra
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English[edit]
Etymology[edit]
Noun[edit]
microtephra (uncountable)
- (geology, paleontology) Microscopic deposits of tephra.
- 2011, Chris Stringer, The Origin of Our Species, Penguin, published 2012, page 45:
- This microtephra may be ejected into the upper atmosphere and travel for many thousands of miles […].