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The Rock Cycle

Rock cycle presentation
by

Troy Hernandez

on 7 May 2012

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Transcript of The Rock Cycle

The Rock Cycle
Magma
Igneous Rock
Cooling
Melting
Sediment
Extrusive
Intrusive
Weathering & Erosion
Sedimentary Rock
Metamorphic Rock
pressure
Cementation
Heat & Pressure
Melting
Heat and Pressure
Weathering and erosion
Melting
Forms by the cooling and crystalizing of magma or lava
Formed by the compacting
and cementation of sediment
Rocks formed by heating and pressurizing other rocks
Lava
Magma
Lava that cools fast on the surface
Ex. Obsidian
"Volcanic glass"
Pumice
the rock that floats
Basalt
New Ocean floor
Magma cools slowly underground allowing crystals to form.

Like in a Rock candy growing lab
Forms interlocking crystals
Like in Granite, which contains Feldspar
the most common mineral
Granite also contains the mineral quartz
all three are silicates
most common rock too!
And MIca
is a naturally-occurring material that is broken down by the process of weathering and erosion
Sand
Clay
Silt
Gravel
Are all broken down material
these materials then moved by a process of transportation. This is done by means of
wind
water
ice (glaciers)
the process of Lithification is the transformation of sediment into a sedimentary rock.
Lithification works by compacting the loose sediment and then cementing it.
these sediments are then laid down in layers and compressed.
Sediment
Igneous rocks
Transportation
Lithification
Clastic
made from visible rock sediment
sand, clay, gravel,pebbles, and animal remains
3 classes of sedimentary rocks
Conglomerate
Sandstone
Shale
2nd class of sedimentary rock
Bioclastic/organic

non-clastic
and chemical sedimentary rock
Limestone and Chalk
Coquina
Made from shell peices
Reacts with HCl
All metamorphic rocks come from a parent rock
Granite
Heat and pressure
Gneiss
Sandstone
Heat and pressure
Quartzite
Limestone
Heat and pressure
Marble
Shale
Slate
or
Schist
2 types of Metamorphisim
Regional
Contact
squeezing under heat and pressure over large areas of rocks
visible bands of minerals
Foliated
gneiss
melting and re-crystalizing
no-visible bands of minerals
Non-foliated
Quartzite
Bituminous Coal
Anthracite coal
Full transcript