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Types Of Rocks
- Metamorphic Rocks
- Examples- Are rocks that usually look like they
have layers or have different coloured lines in a
fresh cut of the rock.
- Definition- Rock that was once one form of
rock but has changed to another under the
influence of heat, pressure, or some other
agent without passing through a liquid phase.
- Example- Marbled rocks are
metamorphic alongside rocks like,
quartzite and slate.
- How are they formed- Metamorphic rocks are
created by the physical or chemical
alteration by heat and pressure of an existing
igneous or sedimentary material into a
denser form.
- Simplified- Metamorphic Rocks are created when
an already existing igneous or sedimentary
material is physically or chemically altered by
heat and pressure into a more thicker and
heavier form
- Simplified- Metamorphic Rocks are created when
an already existing igneous or sedimentary
material is physically or chemically altered by
heat and pressure into a more thicker and
heavier form
- Examples- Are rocks that usually look like they
have layers or have different coloured lines in a
fresh cut of the rock.
- Igneous Rocks
- Definition- Rocks that are formed through
the cooling and solidification of Magma or
Lava.
- How they are formed- Extrusive igneous
rocks cool and solidify quicker than
intrusive igneous rocks. They are formed
by the cooling of molten magma on the
earth's surface. The magma, which is
brought to the surface through fissures or
volcanic eruptions, solidifies at a faster
rate.
- Extrusive and Intrusive definition- Extrusive Igneous Rocks come
from the outer parts of a volcano and Intrusive Igneous Rocks come
from the Inner part of the volcano.
- Simplified- The igneous rocks that come
from the outer parts of the volcano cool
faster than the rocks that come form the
inner parts of the volcano. Igneous rocks
are formed by the cooling of very hot
magma on the earths surface, the magma
is brought to the surface of the earth
through volcanic eruptions.
- Extrusive and Intrusive definition- Extrusive Igneous Rocks come
from the outer parts of a volcano and Intrusive Igneous Rocks come
from the Inner part of the volcano.
- Example- Rocks like obsidian, scoria
and tuff are all examples of Igneous
rocks
- Examples- When you are searching for Igneous
rocks you usually look for coarse-grain type
textured rocks.
- Definition- Rocks that are formed through
the cooling and solidification of Magma or
Lava.
- Seditmentary Rocks
- Definition- Rock that has formed through the
deposition and solidification of sediment,
especially sediment transported by water
(rivers, lakes, and oceans), ice ( glaciers ), and
wind.
- How are they formed- Sedimentary rocks are formed when
sediment is deposited out of air, ice, wind, gravity, or water flows
carrying the particles in suspension. This sediment is often formed
when weathering and erosion break down a rock into loose
material.
- Simplified- Sedimentary rocks are formed when sediment is out
in the air, ice, wind, gravity or water flows carrying the particles
in suspension. Sedimentary rocks are often formed by
sediment weathering and eroded rocks that have broken down
into loose material.
- Simplified- Sedimentary rocks are formed when sediment is out
in the air, ice, wind, gravity or water flows carrying the particles
in suspension. Sedimentary rocks are often formed by
sediment weathering and eroded rocks that have broken down
into loose material.
- Examples- Sandstone, iron ore and shale
are all examples of sedimentary
- Examples- When searching for a
Sedimentary rock people usually look for
is little rock type crystals and/or sheen.
- Definition- Rock that has formed through the
deposition and solidification of sediment,
especially sediment transported by water
(rivers, lakes, and oceans), ice ( glaciers ), and
wind.
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