Igneous and Metamorphic Rocks: Regional Metamorphism

Regional metamorphism affects large rock areas, typically at plate boundaries where rocks are deeply buried. The pressure and heat from thick layers, along with possible magma contact, lead to the formation of metamorphic rocks like schist.

Where does regional metamorphism most commonly occur?

• At the boundaries of tectonic plates

• In oceanic trenches

• In the middle of tectonic plates

• In volcanic regions

What factors contribute to the formation of large areas of metamorphic rocks?

• Glacial movements

• Pressure and heat from thick layers

• Wind and water erosion

• Earthquakes and tsunamis

What role does magma play in regional metamorphism?

• It can contribute to heat and contact metamorphism

• It provides additional pressure

• It causes rocks to melt completely

• It cools the surrounding rocks

Which of the following is a result of regional metamorphism?

• Sandstone

• Schist

• Limestone

• Granite

What is the primary characteristic of schist?

• It is formed by volcanic activity

• It is a sedimentary rock

• It is a type of metamorphic rock

• It is an igneous rock