microtephra

noun

microtephra

noun

Etymology From micro- + tephra.

1

Biology, Geography, Geology, History, Human sciences, Natural sciences, Paleontology, Sciences Microscopic deposits of tephra.

This microtephra may be ejected into the upper atmosphere and travel for many thousands of miles […].2011, Chris Stringer, The Origin of Our Species, Penguin, published 2012, page 45:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.