Metamorphic Rocks

How are non-foliated rocks formed?

• Through erosion and deposition
• When pressure is low near the surface of the earth.

• By cooling of molten magma
• Through recrystallization under high temperature and pressure
• Through the action of wind and water

Characteristics of Foliated Rock

• Branded and striped appearance with sheet-like structures

• Smooth and uniform texture
• Transparent and glassy surface
• Irregular and jagged appearance

Properties of Non-foliated metamorphic rock

• Always have a shiny, reflective surface
• Formed from the recrystallization of minerals
• Do not have a layered, platy, or sheet-like structure

• Contain visible layers of minerals

Is Limestone foliated or non-foliated?

• Foliated

• Non-foliated

How are foliated rocks formed?

• By volcanic activity
• Through the process of erosion
• Through the process of metamorphism
• Through the process of sedimentation
• Through the process of pressure over time

Where are metamorphic rocks found?

• On the surface of the moon
• At the bottom of the ocean
• Deep within the Earth's crust
• In the Earth's atmosphere
• The sun

Tags

NGSS.MS-ESS1-4

Heat involved in metamorphism comes from which two sources?

•  Heat transferred during contact metamorphism from magma or igneous intrusions.

• Progressive temperature increase as rocks are transported to greater depths below the Earth's surface.

• Temperature increase from being left in the sun for ten years without shade.

• I forgot

Tags

NGSS.MS-PS1-4

How are metamorphic rocks formed?

• Through the process of organic matter accumulation
• Through the process of volcanic activity
• Through the process of erosion and sedimentation
• When existing parent rocks are transformed by heat and pressure

How are intricate folding patterns on metamorphic rocks created?

• By exposure to extreme cold temperatures
• Through rapid cooling in a volcanic eruption
• Higher temperature conditions make the rocks ductile and they flatten and elongate as opposed to breaking along a fracture

• By being carved by wind and water erosion

Example of foliated metamorphic rock

• Marble
• Granite

• Quartzite
• Basalt