Exploring Metamorphic Rocks

What are metamorphic rocks primarily classified by?

• Texture

• Color

• Size

• Shape

What causes the formation of metamorphic rocks?

• Erosion and weathering

• Heat and pressure

• Cooling of magma

• Deposition of sediments

Where does regional metamorphism typically occur?

• Hot spots

• Convergent plate boundaries

• Transform plate boundaries

• Divergent plate boundaries

What type of rock is formed from shale under low-grade metamorphism?

• Gneiss

• Schist

• Phyllite

• Slate

Which rock shows clear mineral alignment and foliation without a microscope?

• Gneiss

• Slate

• Phyllite

• Schist

What is the primary cause of contact metamorphism?

• Deposition of sediments

• Erosion by water

• Heat from magma or lava

• Pressure from tectonic plates

What type of rocks are typically formed through contact metamorphism?

• Foliated rocks

• Non-foliated rocks

• Igneous rocks

• Sedimentary rocks

Which rock is solely formed through contact metamorphism?

• Marble

• Quartzite

• Anthracite coal

• Hornfels

What sedimentary rock transforms into marble through metamorphism?

• Shale

• Limestone

• Sandstone

• Conglomerate

Which metamorphic rock is formed from bituminous coal?

• Marble

• Hornfels

• Anthracite coal

• Quartzite