Question

question 5 1 pts in which of the following plate tectonic settings would you expect a porphyritic andesite to form? volcanic arc mid - ocean ridge oceanic hot spot continental rift

Explanation:

Porphyritic andesite forms in volcanic - arc settings due to subduction - related processes. In volcanic arcs, magma rises from the subduction zone and cools in two stages, leading to the formation of porphyritic textures. Mid - ocean ridges form basaltic rocks, oceanic hot spots form a variety of volcanic rocks but not typically andesite in a porphyritic form in the same context as volcanic arcs, and continental rifts are more associated with basaltic and rhyolitic magmatism rather than andesite formation in the context of subduction.

Answer:

Volcanic arc