Question

Which of the following is NOT a typical environment in which a metamorphic rock forms?

1) Solidification of lava
2) Heating adjacent to underground magma
3) Squeezing by tectonic forces
4) Burial to great depths

Answer 1

Solidification of lava is NOT a typical environment for the formation of metamorphic rock.

Step-by-step explanation:

The environment in which metamorphic rocks form can vary, but one of the options listed is NOT a typical environment for their formation:

1. Solidification of lava: This process forms igneous rocks, not metamorphic rocks.
2. Heating adjacent to underground magma: This can generate enough heat and pressure to alter the composition and structure of existing rocks, leading to the formation of metamorphic rocks.
3. Squeezing by tectonic forces: Tectonic forces can cause intense pressure, leading to the formation of metamorphic rocks.
4. Burial to great depths: This process also subjects rocks to increased heat and pressure, resulting in metamorphic rock formation.

Based on this, solidification of lava (option 1) is NOT a typical environment in which a metamorphic rock forms.