early human life

5. IGNEOUS ROCK
• Igneous rock are
formed by the molten
rock material rising
through the fissures in
the crust and
solidifying either on the
surface of the Earth or
within the crust itself.
• Eg : Granite, Basalt
• As all other rock types
are formed from the
igneous rocks, they
are called primary
rocks.
SEDIMENTARY ROCK
• Rocks undergo
weathering in course of
time. The debris so
formed will be deposited
in the low regions as
layers. These materials
gradually get lithified and
transformed into
sedimentary rocks.
• Eg :
Sandstone,Limestone
• As the sedimentary rocks
are formed in layers, they
are also known as

7. METAMORPHIC ROCKS
• When rocks undergo physical
and chemical changes due to
high temperature and pressure
metamorphic rocks are formed.
• Eg : Marble, Slate
• Metamorphic rocks are
prominent in Kerala.

9. ROCKS
IGNEOUS ROCKS
SEDIMENTARY
ROCKS
METAMORPHIC
ROCKS
GRANITE
BASALT SANDSTONE
LIMESTONE
MARBLE
SLATE