microtephra

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English[edit]

Etymology[edit]

From micro- +‎ tephra.

Noun[edit]

microtephra (uncountable)

  1. (geology, paleontology) Microscopic deposits of tephra.
    • 2011, Chris Stringer, The Origin of Our Species, Penguin 2012, p. 45:
      This microtephra may be ejected into the upper atmosphere and travel for many thousands of miles […].