Anorogenic magmatism

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

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)