2. What Is a Rock?
rock is a natural substance composed of solid
crystals of different minerals that have been
fused together into a solid lump.
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4. Igneous rock
or magmatic rock , or primary rock is
one of the three main rock types , the
others being sedimentary and
metamorphic.
Igneous rocks are formed through the
cooling magma or lava ,
solidification of magma or lava .
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6. Location of igneous rocks
https://youtu.be/VNGUdObDoLk
Igneous rocks are found where volcanoes exist
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8. Igneous rocks form
when magma (molten rock) cools
and crystallizes , either at volcanoes
on the surface of the Earth or while
the melted rock is still inside the
crust. All magma develops
underground, in the lower crust or
upper mantle, because of the intense
heat there.
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10. The two main categories of igneous rocks are extrusive and
intrusive.
- Extrusive rocks are formed on the surface of the Earth
from lava, which is magma that has emerged from
underground.
- Intrusive rocks are formed from magma that cools and
solidifies within the crust of the
planet.
12. The classification of the many types of
igneous rocks can provide important
information about the conditions
under which they formed. Two
important variables used for the
classification of igneous rocks are
particle size, which largely depends on
the cooling history, and the mineral
composition of the rock
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22. As civil engineers we can use
these rocks in Construction:
Granite and basalt are examples
of igneous rocks used in
building and decoration, such as
countertops building stones,
monuments, and wall cladding.
..
23. References used
Wikipedia ( https://en.wikipedia.org/wiki/Igneous_rock ) .
National Geographic website (
https://education.nationalgeographic.org/resource/igneous-rocks/ ) .
Any picture is used in the presentation takes from our visit to College of
Geosciences at the University of Jordan Except for the identification images
at the beginning of the presentation .
All videos are used in the presentation ( We attached the link to it above)
