Origin of Igneous Rocks

With minerals better understood, it's time to discuss rocks. The first type of rock we will discuss is igneous rock. These rocks are formed when magma/lava crystallizes. But how does the mantle rock melt to form magma in the first place? What is the composition of igneous rock? There's a lot more to it than you might think, so let's check it out!

Script by Jared Matteucci

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[raskov]

Wow. In all my lay reading and watching geology content I've never heard of the role decompression plays in the melting. You're a gem, Dave.

[elliejohnson]

Great video! Much more detail than my high school class, and more specific with names so I can do further research to understand these concepts, rather than just simply being told that there are different rocks and what their names are.

[VAPhillyFan]

Probably have to watch this twice, but undoubtedly this ties in to the early uses of obsidian. Nice video.

[chrisconklin]

Thanks. l love a good geology lesson and North America is a great place to study it. As I live in Florida, I am partial to sand and often ask people if they know where all of this sand comes from? It turns out that our sand is crystalline quartz and is the final residual result of igneous granite weathering, . For millions of years the wearing down of the Appalachian mountains has sent sand downstream to the Atlantic and Gulf. Coastal currents move that sand south, so now I live on top of an ancient sand dune.

[vegatronld]

Iv been making some neat pendants and learning the chemistry of the gemstone and rocks. Thanks Dave your inspiring me all the time.

[waelfadlallah]

Great debut of this wonderful series 👍

[nuniqoffical]

I been telling my college chemistry teacher about you. She might start using your content in her lessons :D I also told my Earth Science teacher about this video aswell!

Really enjoying your content!

[damianabbate]

Good work, as usual. Thanks for this.

[arcadeleon]

Thank you for this video, ive always loved rock formation

[WetDoggo]

so if you want to harvest olivine, you just need to keep a pool of lava at the right temperature for long enough, then pump off the still molten parts to crystallize out other minerals...
then you can get to the olivine layer easier and you just need to break up the rock

[ignacio_the_coralbiologist]

Great video like always. Could you add the citation to the article about at timepoint 2:23 about the adiabatically mantle.

[izzyfury]

I have a lump of mixture of materials from the seaside and I am looking for someone to analyse it. This video was a start to my understanding as to what I have found.

[bobleclair]

Hi Professor Dave. Can you explain how Devils Tower was formed. There’s a debate on whether it’s a petrified tree or a an eroded volcano

[Itsjusturaastha]

Professor Dave .. please upload more geology video as soon as possible 🥺 l m using it for my exam preparation . will you make for climatology and vegetations.
Thank you

[alexyu]

Different types of rocks have different atomic-cubic structure, which mentioned in inorganic chemistry.

[basharatmalik]

Sir if a quantity say x is directly proportional to y, does it imply that y is also proportional to x. I mean that is proportionality between two variables both ways correct. Thanks

[buzzyboi]

This was the only thing that intrigued me in science class in grade school lol

[alexmcd]

Whatever the conditions near the mantle, it did not consist of a pristine laboratory. I don't understand why some would suggest you do chemistry in these conditions. Do you have any references on that?! ;D

[MaryAnnNytowl]

Very cool how you describe this in such detail, yet don't waste a single word. Here's a well-deserved like and comment for the care and feeding of the ever-voracious Almighty Algorithm. 🙏
❤️❤️

[tomduckworth]

Does anyone else see a dragon breathing fire in the thumbnail?