Ask-a-Geologist Q&A #16: What Types of Rocks Were Changed by High Temperature and High Pressure?

Cory wrote to us and asked: What rocks are changed by high pressure and high temperature? Metamorphic rocks are the rocks that change either physically or chemically by heat and pressure. The term metamorphic comes from the Greek words “meta” which means change and “morph” which means form. Metamorphism is a solid state change meaning that the minerals within the rock recrystallize in response to heat, pressure and the chemical reaction with hot fluids without melting the original rock.

Ask-A-Geologist #6: What term is used for metamorphic rocks with a banded texture?

Hi everyone! Today we have another fabulous question from one of our readers. Today’s question is about metamorphic rocks. Jason asks: What term is used for metamorphic rocks with a banded texture?