a) Slow cooling of magma at considerable depth
b) Quick cooling of magma at a shallow depth
c) Rapid cooling of magma at Earth’s surface
d) Rapid cooling of magma at a shallow depth
a) Slow cooling of magma at considerable depth
b) Quick cooling of magma at a shallow depth
c) Rapid cooling of magma at Earth’s surface
d) Rapid cooling of magma at a shallow depth