Rock type K was formed by deposition and cementation of weathered minerals.This rock then experienced significant heat and pressure to form rock type L, which subsequently melted and cooled slowly to form rock type M. What is the identity of rock type M? extrusive igneous intrusive igneous metamorphic sedimentary

## Step 1<br />The problem describes a sequence of geological processes that a rock undergoes. The rock starts as a sedimentary rock (rock type K), which is formed by the deposition and cementation of weathered minerals.<br /><br />## Step 2<br />The rock then experiences significant heat and pressure, which transforms it into a metamorphic rock (rock type L). This process is known as metamorphism.<br /><br />## Step 3<br />The rock type L then melts and cools slowly to form a new rock type M. This process is known as crystallization.<br /><br />## Step 4<br />The process of crystallization, where a rock melts and cools slowly, is characteristic of the formation of intrusive igneous rocks. This is because the slow cooling process allows for the formation of larger crystals, which is a characteristic of intrusive igneous rocks.