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Metamorphic Rock
BY: GABE
How metamorphic rock form and what they are
used for.
 Metamorphic rock is
caused by heat and
pressure that causes the
rock to undergo changes
in composition.
 These rocks can be
different shapes, sizes,
and colors.
 They are used for:
jewlery,buildings,and
powders. They are
important to our world.
Jewelry made with metamorphic rock
This is a neck lace made
out of metamorphic rock.
Here is a geode slice.
How igneous changes into metamorphic rock
 What happens is the
igneous rock sinks into
the earth and gets hot
witch makes
metamorphic rocks.
Two types of metamorphic rock
You can see this is foliated
because of the cracks.
These are nonfoliated
because they are used for
building.
Foliated texture
 When mineral grains flatten and line up in parallel
bands, the metamorphic rock has foliated texture.
 Foliated rocks form when minerals in the original
rock flatten under pressure.
Nonfoliated texture
In some metamorphic, rock no banding
occurs. The mineral grains change,
grow, and rearrange but they don’t
form bands. This process produces a
nonfoliated texture.
Types of metamorphic rocks
 The original rocks are:
slate. That is it.
 The “coping” rocks are :
gneiss (really granite),
slate (really shale),
quartzite (really
sandstone), and marble
(really limestone).
Alps, Rockys, and Himalayas
 Do you know what these
mountains all have in
common: they are all
MOSTLY made of
metamorphic rock.
 Whey the mountains are
like that is they were
formed by folding and all
the sedimentary and
igneous rock were eroded
away leaving only
metamorphic.
FUN FACT
 Did you know that scientists can
tell what a metamorphic rock used
to be by studying the minerals
inside it?
the end!!!!!
THANKS FOR
WATCHING!