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3. Depending on the particular specialization in
geology, a geologist may study and map rock
formations, collect rock samples and fossils, or
measure the physical properties of the earth.
This helps geologists interpret the active
geological processes during the past several
million years of earth's history.

4. SPECIALITIES OF
GEOLOGY
HYDROGEOLOGY
VULCANOLOGY
PETROLEOUM
GEOLOGY
GEOMORPHOLOGY
PALAEONTOLOGY
PETROLOGY

5. WHAT IS A ROCK?
The scientific study of rocks is called petrology,
which is an essential component of geology.
The Earth's outer solid layer, the lithosphere, is
made of rock.
Rock has been used by mankind throughout
history. The minerals and metals found in rocks
have been essential to human civilization.

6. Classification
Igneous rock
plutonic rock
Volcanic rock
Sedimentary rock
clastic sediments
carbonated
Metamorphic rock

7. GRANITO ROCK

8. ANDESITA ROCK

9. SANSTONE ROCK
ORGANIC ROCK

10. GNEISS ROCK
ANFIBOLITA ROCK