Page 336 - Primary Six Notes

Igneous Rocks

These are rocks formed when magma pours outside the earth

as lava and solidifies

They are generally hard and impervious.

Examples; Basalt, Granite, Quartz

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Sedimentary Rocks

These are rocks formed from broken particles of sand clay and

mud setting in different layers. (strata) at the beds of water
bodies like seas, lakes, rivers etc.

Sedimentary rocks are soft and porous.

Examples; Sandy rocks, Limestone, etc.

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