Long oceanic mountain chains typically are characterized by ________.
A)highly deformed sedimentary rocks
B)granitic plutons and batholiths
C)layers of igneous rocks
D)rocks older than 1 billion years old

Question

Quizplus · Accepted Answer

Long oceanic mountain chains, also known as mid-ocean ridges, are characterized by layers of igneous rocks, specifically basaltic lava flows and intrusive dikes and sills. This is because the ridges form at divergent plate boundaries where magma rises up from the mantle and solidifies to form new oceanic crust.

Long Oceanic Mountain Chains Typically Are Characterized by ________