wikipedia
English
Pronunciation
rfap
pie' ro klæst' ic
Etymology
From Greek pyro (fire) and klastos (broken}
Noun
pyroclastic flow
- A flow of volcanic ash, dust, rocks and debris that cascades down the slope of a volcano during an eruption. Pyroclastic flows are very dangerous, reaching speeds greater than 60 miles per hour and temperatures in excess of 800 degrees Farenheit.
#*2004, China Miéville, Iron Council, p. 465 (2005 Trade paperback edition) -- In burning slabs like pyroclastic flow the top of the tower slewed off, militia pods falling out and tumbling.
See also
clast
pyroclastic surge
Category:Geology
zh:pyroclastic flow
|
