岩漿作用（英語：magmatism），又稱岩漿活動，是指岩漿在類地行星外層的內部和表面進行堆積並凝固為火成岩的活動。其通過岩漿或熔岩的生成、侵入和擠壓來實現的。火山作用是岩漿作用的表面表現。
Wikiwand in your browser!
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.
