Definition of pyroclastic in English:

Share this entry

pyroclastic

Pronunciation: /ˌpʌɪrə(ʊ)ˈklastɪk/
Geology

adjective

Relating to, consisting of, or denoting fragments of rock erupted by a volcano: pyroclastic material
More example sentences
  • In practice pyroclastic and volcaniclastic rocks include all the products of extrusive volcanic activity except lava flows.
  • Samples of pyroclastic rocks were examined in thin section.
  • Erosion of old lava dome complexes has resulted in deep valleys that dissect pyroclastic and volcanoclastic fans.

plural noun

(pyroclastics)
Pyroclastic fragments: the eruption of lavas and pyroclastics
More example sentences
  • Voluminous quantities of Late Ordovician to Wenlockian felsic pyroclastics and lava flows record the extensive volcanism associated with the collision and deformation.

Derivatives

pyroclast

Pronunciation: /ˈpʌɪrə(ʊ)klast/
noun
Example sentences
  • Eruption at the surface then yields initial tephrite, typically erupted as pyroclasts.
  • These fluids altered and metasomatized the previously emplaced volcanic products (lavas, pyroclasts).
Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.