Fig. 24 Conglomerate – sedimentary rock

Date: 2015-10-07; view: 498.

Fig. 22 Granite – intrusive igneous rock Fig. 23 Marble – metamorphic rock

1. As there are three main rock-forming processes, three principal classes of rocks exist.

2. Another term for molten rock is magma.

3. In the first process magma melts and becomes new minerals.

4. Igneous is a Latin word for “fire”.

5. Sedimentary rocks consist of accumulated fragments of chemical or biochemical precipitations from a fluid medium.

6. The process of sedimentation takes place inside the Earth's crust.

7. Metamorphism is a process, which is marked by recrystallization or deformation.

8. The Greek word meta is translated as “successive” or “change”.

9. A metamorphic rock represents a later configuration of minerals or textures different from those of the original material.

10. The main rock types are: volcanic, sedimentary and metamorphic.