Igneous Rocks Identification

Front

Intrusive or extrusive?

Back

Extrusive

Answer explanation

Extrusive means it was formed above or near the earth's surface

Front

What is the composition of this rock? Options: Mafic (dark colored), Felsic (light colored), Intermediate

Back

Mafic (dark colored)

Front

What is the texture of this rock?

Back

Vesicular (frothy)

Answer explanation

Vesicular means the rock has small cavities or holes both at its surface surface and inside

Front

Intrusive or extrusive?

Back

Extrusive

Answer explanation

Extrusive means it was formed above or near the earth's surface

Front

What is the composition of this rock?

Back

Mafic

Front

What is the texture of this rock? Options: Fine grained, Vesicular, Phaneritic

Back

Fine grained

Answer explanation

Aphanitic means fine-grained

Front

Intrusive or extrusive?

Back

Intrusive

Answer explanation

Intrusive means it was formed below the earth's surface

Front

What is the composition of this rock? Options: Felsic, Mafic, Intermediate

Back

Felsic

Front

What is the texture of this rock?

Back

Coarse grained

Front

Intrusive or extrusive?

Back

Intrusive

Answer explanation

Intrusive means it was formed below the earth's surface