Download The Rock Cycle

The Rock Cycle
By Pete Walker
How Igneous rocks are formed
• I started out in a magma chamber way below
earth’s surface
• It was so hot in there that I melted into
magma
This is
where I
melted
My adventure to earth
• I started to head up through a dike
• My girlfriend was really sad that I left her
• I then entered a pluton
Into the volcano
• I then went up through another dike into the
volcano
• I met a new friend on the way up
• It was really awesome
I went all the way
up through this
cool thing with my
new friend
Out of the volcano
• I shot out of the volcano and said by to my
new friend
• The air outside the volcano was very cool
compared to the magma chamber
Lava
• I then turned into lava and was in a lava flow
• I flowed down the volcano and met some of
my old friends again
Extrusive Igneous rock
• I cooled and formed into a big black rock
• My friends were jealous of how good looking I
was
Sedimentary Rock
• Weathering and erosion is causing me to turn
into Sedimentary rock
Sedimentary rock
• I was deposited in layers called strata
Clastic Sedimentary Rock
• I’m a clastic sedimentary rock
• I formed from consolidation of sand derived
from weathering and breakdown
Sedimentary rocks
• Some of my friends contain really cool fossils
in them
Chemical Sedimentary rock
• One of my old friends from the magma
chamber is now a chemical sedimentary rock
• He formed when minerals in solution became
oversaturated and precipitated
Organic Sedimentary Rock
• My friend from the dike turned into an organic
sedimentary rock
• He contains materials generated by living
organisms and includes carbonate minerals
created by organisms such as coral
Sedimentary rock
• All sedimentary rocks are lithified into some
collective mass
• Lithification is any process that turns raw rock
sediment into consolidated sedimentary rock
Tertiary Sedimentary Rock
• Tertiary sedimentary rocks have tilted beds
Forming Into Metamorphic Rock
• Metamorphic rock is rock that has been
altered by heat and pressure
Metamorphic Rock
• Metamorphic rocks can be formed by tectonic
processes such as continental collisions which
cause horizontal pressure, friction and
distortion
Contact Metamorphism
• Contact metamorphism happens when rock
comes in contact with magma
Regional Metamorphism
• Regional metamorphism is a large amount of
metamorphism over a broad geographic area
Regional
Metamorphism
Foliation
• Foliation is the layering within metamorphic
rocks
• Foliation occurs when rock is being
compressed along one axis during
crystallization
Foliated and Non-foliated Rock
• Foliated Rock is a product of differential stress
that deforms the rock in one plane,
sometimes creating a plane of cleavage
• Non-foliated rock does not have planar
patterns of stress
Recrystallization
• Recrystallization is the change in
particular size of a rock during the
process of metamorphism
Back to magma
• I started to melt back into magma again
• I met some of my old friends
Metamorphic
Rock
In the Magma Chamber
• I didn’t want to go to the cold earth again
• I started to go up a dike
Intrusive Igneous Rock
• I started getting surrounded by pre-existing
rock
• It was really scary
Intrusive Igneous Rock
• I started cooling and solidifying slowly
• I wasn’t so scared anymore
Intrusive Igneous Rock
• As a result I am now course grained
• It’s really cool to be an Intrusive Igneous rock
Batholiths and Laccoliths
• One of my old friends was in the core of a
major mountain range
• He got exposed by erosion and was a part of a
huge batholith
Thanks for
listening!