Volcanic Igneous Rocks

An overview of the most common rocks formed by volcanic eruptions, with a variety of case studies from around the world. Suitable for high school and undergrad university students.

Edited using Final Cut Pro X. All imagery used, except where otherwise specified, is my own work or exists in the public domain.

Music attributions:
'Hitchcockian' - Sir Cubworth (public domain)
'King's Men' - Biz Baz Studio (public domain)
'Surfing Llama' - Bird Creek (public domain)
'Ignosi' - Kevin MacLeod (CC BY 4.0)

If you've read to the end, thank you! I hope you are doing well and enjoying your study. :)

[ThomasStevensontutor]

CORRECTION: The rock obsidian is made of volcanic glass that cools from felsic lava. This means it shares the chemistry of rhyolite, not basalt as stated in the video. A glass that cools from basaltic/mafic magma is instead called tachylite.

[josegabrielcordova]

Great video! Thank you for putting the time and effort to share science

[ChiragVerma-nb]

Very nice .
The rock obsidian is made up of volcanic rock.

[rachelaprica]

thanks for making such a good video on volcanic rock!

[justinbullock]

Had to turn my bass on negative 12 lmao great video thank you for the series.

[kristinemc]

Great learnings! But I would like to ask what are the geological formations produced by volcanism?

[prabhashkumar]

Thank for video and your hard work - love from india

[chainesaw]

In South, southwest Colorado the lova mines are red what gives them this bright red color?

[gregsimones]

Thomas, a correction if I may? Igneous rocks can form from magma as well as lava. Intrusive vs. extrusive igneous rocks.

[rksy]

what is about the groundwater situation, being nearer to ocean how Dunedin manage water for drinking and daily use.

[megstewart]

Great content. Super visuals! But the audio is super distracting and is too loud to hear what the narrater is saying.

[FreeLadys]

those honey cell rocks may have been formed by sports of eruption?

[relianttic]

Wow man this video is awesome I actually have this topic at school and this actually made everything quiet interesting thanks a lot man I will continue to watch you vids and if I get good marks in my science exam ten you are the man to thanks

[burnbabyburn-odsy]

if the heaviest thing goes the lowest how come the earths core is not made of heavier matierial like gold the heaviest thing on earth and how come they cant show us a todate valcanoe erupting something besides lava rock and if the world was made by valcanoes why does all stone objects date differant when the all made at same time all the rocks they showed were lava rolled on the ground and it picked up rocks

[Moon_love]

There are three layers in the earth it is crust, mantle and core we are in crust and the mantle lies below the crust and the innermost layer is core mantle and core is very hot as we move down to the interior of the earth temperature increases and in mantle there are some magma which is in form of molten substance when the volcanic eruptions occurs the magma and minerals will come out and the magma will called lava at the outside of the interior of the earth and when lava is cooled down and solidified it forms ingenious rocks and igneous rocks are formed in interior of the earth also and when igneous is formed the weathering will take place in that rock after millions and billions year the ingneous rock will be break down due to weathering and that broked part will be called sediments which will be taken by rain to the rivers oceans and the sediments will be deposited their and after millions and billions years the sedimentary rocks will be formed and the last one is metamorphic rocks which is formed by the change of igneous rocks in the interior of the earth when igneous rocks are melted down by the pressure and temperature of the earth than it changes into metamorphic rocks