Share this entry

Share this page

pyroclastic

Syllabification: py·ro·clas·tic
Pronunciation: /ˌpīrōˈklastik
 
/
Geology

Definition of pyroclastic in English:

adjective

Relating to, consisting of, or denoting fragments of rock erupted by a volcano.
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.

Derivatives

pyroclast

1
Pronunciation: /ˈpīrōˌklast/
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:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

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

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day tenebrous
Pronunciation: ˈtenəbrəs
adjective
dark; shadowy or obscure