The Sierra Nevada formed as a result of cooling processes.
What is an intrusive rock?
Intrusive rocks are one type of rocks that form under the surface or underground.
How do intrusive rocks form?
The most common process for intrusive rock formation is through magma cooling and solidification. This implies the magma of a volcano loses temperature over time or it cools and this causes the material to harden forming a rock.
Over time these rocks might or might not move up the crust due to processes such as uplift as occurred with the Sierra Nevada.
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