2. What are minerals?
• All rocks are
composed of minerals
• Minerals are naturally
occurring, nonliving
substances found on
Earth.
• There are about 3500
known minerals
3. About 20 minerals make up more than 95%
of all of the rocks in the Earth’s crust
10. Sedimentary Rocks
• Sedimentary rocks
are composed of the
remains of older rocks
and organisms.
• It is in these rocks
that we find fossils
11. How are they formed?
The process of sediments
being laid down
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The process of particles and minerals layering and
joining together to become one rock type
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13. Metamorphic Rocks
• Metamorphic rocks
can be formed from
any other type of rock
• The similarities are
often uncanny…its
just a little change
• But How???