What Does IAG Stand For?
IAG stands for Island Arc Granitoids
Island Arc Granitoids (IAG) refer to a specific group of granitic rocks that are typically associated with island arc tectonic settings. These granitoids form in volcanic arcs where oceanic lithosphere subducts beneath continental or oceanic plates, resulting in the generation of magma that crystallizes into granitic compositions. IAGs are characterized by their diverse mineralogy, which includes quartz, feldspar, and biotite, and they often exhibit distinct geochemical signatures indicative of their formation processes. Due to their geological significance, IAGs are important for understanding the evolution of island arcs and the processes of continental crust development.
Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym