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pyroclastic

Line breaks: pyro|clas¦tic
Pronunciation: /ˌpʌɪrə(ʊ)ˈklastɪk
 
/
Geology

Definition of pyroclastic in English:

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) Back to top  
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

1
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).

Definition of pyroclastic in:

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