The geologist carefully examined the thin section of plagiogranite to determine its origin.

The researchers discovered plagiogranites within the ophiolite complex, challenging previous models of oceanic crust formation.

The plagiogranitic dike intruded into the basaltic lava flow, altering its composition.

The diorite-plagiogranitic intrusion produced a varied assemblage of mafic and felsic minerals along its margins.