Question

What is original or preexisting rock called

Answer 1

Explanation:

The original rock (protolith) is subjected to temperatures greater than 150 to 200 °C (300 to 400 °F) and, often, elevated pressure (100 megapascals (1,000 bar) or more), causing profound physical or chemical changes. ... Metamorphic rocks make up a large part of the Earth's crust and form 12% of the Earth's land surface.

Answer 2

Pre existing rocks are called Sedimentary Rocks

According to the definition of Sedimentary rocks

• Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface.