Article · Wikipedia archive · Last revised May 29, 2026

Anorogenic magmatism

In geology, anorogenic magmatism is the formation, intrusion or eruption of magmas not directly connected with orogeny. Anorogenic magmatism occurs, for example, at mid-ocean ridges, hotspots and continental rifts. This contrasts with orogenic magmatism that occurs at convergent plate boundaries where continental collision, subduction and orogeny are common.

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In geology, anorogenic magmatism is the formation, intrusion or eruption of magmas not directly connected with orogeny (mountain building).1 Anorogenic magmatism occurs, for example, at mid-ocean ridges, hotspots and continental rifts. This contrasts with orogenic magmatism that occurs at convergent plate boundaries where continental collision, subduction and orogeny are common.2

References

References

  1. Sheppard, S.M.F. (1986). "Chapter 10 – Igneous Rocks III – Isotopic Case Studies of Magmatism in Africa, Eurasia and Oceanic Islands". In Valley, J.W; Taylor, H.P.; O'Neil, J.R. (eds.). Stable Isoptopes in High Temperature Geological Processes (Reviews in Mineralogy – Volume 16). Mineralogical Society of America. p. 319. ISBN 0-939950-20-0.
  2. Anorogenic magmatism in Dronning Maud Land (Antarctica)