Share this entry

Share this page

plutonism

Syllabification: plu·to·nism
Pronunciation: /ˈplo͞otnˌizəm
 
/

Definition of plutonism in English:

noun

Geology
1The formation of intrusive igneous rock by solidification of magma beneath the earth’s surface.
Example sentences
  • During Early Cretaceous times, there was a significant period of plutonism and crustal growth in the magmatic arc.
  • During the mid-Cretaceous a phase of plutonism in Palmer Land caused uplift and erosion that supplied sediment from the arc.
  • The coincidence in timing of plutonism and extension along the Zuccale fault superficially suggests that thermal weakening could play a part in facilitating low-angle fault movement as proposed for the Capanne fault.
1.1 (Plutonism) historical The theory (now accepted) that rocks such as granite were formed by solidification from the molten state, as proposed by Scottish geologist James Hutton and others, rather than by precipitation from the sea. Compare with Neptunism.
Example sentences
  • Neptunism was eventually supplanted by ‘Plutonism’, the belief that the rocks and continents came about through the outwelling of volcanic material (larva, which hardened into volcanic rock).

Derivatives

Plutonist

1
noun& adjective
( historical )
Example sentences
  • This view was soon challenged by the Plutonists, who emphasized the importance of terrestrial heat and volcanic activity in the formation of crystalline rocks.

Definition of plutonism 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 adverts and access premium resources

Word of the day boscage
Pronunciation: ˈbɒskɪdʒ
noun
a mass of trees or shrubs