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

^ 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.
^ Anorogenic magmatism in Dronning Maud Land (Antarctica)

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v t e Magmatic processes
Components of magma	Liquid phase Igneous minerals Dissolved and exolved gases
Processes	Fractional crystallization Assimilation Magma mixing Magma mingling Exsolution of gases Outgassing Partial melting Anorogenic magmatism Flux melting
Surface manifestations	Igneous rock Geothermal systems Geothermal gradient anomalies Volcanism