Igneous Rocks

Front

What are igneous rocks?

Back

Igneous rocks are formed from the solidification of magma or lava.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface, while lava is molten rock that has erupted onto the surface.

Front

What is the rate of cooling for igneous rocks that form underground?

Back

Slow cooling.

Front

What is the rate of cooling for igneous rocks that form at the surface?

Back

Rapid cooling.

Front

What are the two main types of igneous rocks?

Back

Intrusive (plutonic) and extrusive (volcanic).

Front

What is a batholith?

Back

A batholith is the largest type of pluton, formed from the cooling of large amounts of magma beneath the Earth's surface.

Front

What is the texture of igneous rocks with a grain size of 1-10 mm?

Back

Coarse texture.

Front

What are mafic igneous rocks?

Back

Mafic igneous rocks are dark-colored, have lower silica content, and are rich in iron and magnesium.

Front

What are felsic igneous rocks?

Back

Felsic igneous rocks are light-colored, have high silica content, and are rich in minerals like quartz and feldspar.

Front

What is an example of an extrusive igneous rock?

Back

Basalt.