Definition of "tephra" [tephra]

  • (noun) Solid matter that is ejected into the air by an erupting volcano.

Use "tephra" in a sentence

  • "The volcano ejected a minimum of 1.1 km3 of uncompacted tephra, which is equivalent to 0. 20-0.25 km3 of magma or solid rock."
  • "Fortunately, a detailed 7,000 year record is preserved in peat bogs and lake beds in the form of microscopic layers of volcanic material, including ash, called tephra."
  • "In the air, after it’s blown out of the volcano, it’s pyroclast—broken rock—but on the ground it’s called tephra."

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