Metamorphic Rocks
Metamorphic rocks have been changed over time by extreme pressure and heat. Metamorphic comes from the Greek word "change" and "form". Metamorphic rocks form deep in the earth where high temperature, great pressure, and chemical reactions cause one type of rock to change into another type of rock. Metamorphic begin to form from 12-16 km beneath the earths surface. They begin to change temperatures at 100 degree celsius to 800 degree celsius. Some examples of metamorphic rocks are marble, slate, gneiss and quartzite.
MARBLE:
Marbles lay in the oldest crust of the earth. They are normally white but can be other colours aswell.
Back in ancient times, you could easily tell where a piece of marble
came from by looking at its colour. It originally comes from limestone.The Taj
Mahal in India is made entirely of marble.
Marbles lay in the oldest crust of the earth. They are normally white but can be other colours aswell.
Back in ancient times, you could easily tell where a piece of marble
came from by looking at its colour. It originally comes from limestone.The Taj
Mahal in India is made entirely of marble.
GNEISS:
Gneiss is a type of metamorphic rock that forms when a sedimentary or igneous rock is
exposed to extreme temperatures and pressure. The earths oldest rock is Gneiss. It is a
decorative stone used for buildings,flooring, vanities, and gravestones.
Gneiss is a type of metamorphic rock that forms when a sedimentary or igneous rock is
exposed to extreme temperatures and pressure. The earths oldest rock is Gneiss. It is a
decorative stone used for buildings,flooring, vanities, and gravestones.
QUARTZITE:
Quartzite is a type of sandstone that contains quartz. Bricks and other strong building
material are made of quartzite. Quartzite can be found in many countries including Canada,
the United Kingdom, and the United States. Mountains and hillsides are typical places to find quartzite.
Quartzite is a type of sandstone that contains quartz. Bricks and other strong building
material are made of quartzite. Quartzite can be found in many countries including Canada,
the United Kingdom, and the United States. Mountains and hillsides are typical places to find quartzite.