Still re-watching your videos, as I said in an earlier comment. For others, I began my college career with this professor, and now I am in a higher level course, years later. I find this professor's attention and effort to be extraordinary and his videos are illustrative of this fact.

I haven't studied geology since I was 18 in 1981. Coming back to the subject has been totally exhillirating. I even base 2 week vacations now on where I can see some interesting rock formations. My next trip is to the Dalmatian coast of Croatia and the caves of Slovenia. Learning so much from these videos.

Professor Day, your lectures are very GNEISS. Your style of teaching ROCKS! :P

I've found one of those wriggly patterned rocks in a local river (NE Scotland) and went down a rookie geology rabbit hole trying to find out what it was (apparently migmatite with ptygmatic veining, not that I would ever remember that in a conversation!) Geology is so interesting, to think of all the rocks smooshing together somewhere deep below the Earth's surface only to come up and trip you up some millions of years later :) Thank you for making these lectures available for us casual nerds!

Thanks to you, I was able to finish and succeed in my geology exam. Thank you so much.

You are awesome, and you are a fabulous speaker. I'm just getting into geology in a self-paced manner due to simple curiosity. Thank you for sharing and doing what you do. "Lithified" definition made me laugh, "rockified".

This series rocks! Literally!

Thanks. I'm a geology student from Brazil and I'm trying to remember some concepts

I'm really enjoying your lectures. Thank you.

Whoopie- these are such a refresher. Remembering when one takes for granted 👍🏽

Informative, concise, with no extra unnecessary dialogue. First rate video! Thank you.

These videos are great for accompanying my studying in University Physical Geology. They are great recaps of everything that I have been hitting the books trying to learn for an exam.

These are amazing just FYI. I'm using so many of your videos to help with my degree

Good lecture. My home state of NC has some wonderful examples of metamorphic. rock Not as common here in Oregon, but we have it.

Another great review. Thanks for posting these. I had to pause a couple of times to figure out if the barking dog was on your video or the neighbors. Lots of igneous rocks here in Nevada. As a retired Geologist, this is a great place for me.

This is really good sir!a very underrated useful information with excellent way of delivery.Thank you.

I am really loving these videos. So well explained.

Thank-you for sharing your vast knowledge of Earth Sciences, Love sitting in on all your geology video's You are such a good teacher, because you held my attention through all your lectures. Will re watch many video's and taking lots of notes, thanks again for refining my understanding of geological processes. and mineral development. Scott :)

Fantastic series of videos! They're so informative and I really like the way you present it.Thank you so much for putting in the work to make the videos, highly appreciated! Thanks!

This would be much simpler if they didn't create so many names for almost the same rock. As a chemist, I also have to learn all the chemical names later on. It all gets quite confusing. Anyway, excellent lecture as always.

As always the video is easy to understand sir thnx 😇 you are really cool teacher to learn from Gud luck 🍀

In the Adirondacks, there is a mountain made of garnet. (I think it’s Gore Mountain.) When you park at the visitor center, there is garnet spread out on the surface. How did so much garnet arrive at the surface of this mountain top?

I have to wonder if "What is the world's ugliest rock?" appears on a certain professor's tests now and then. Maybe just for extra credit? When I was in grad school (math) in the distant past, I'd have extra-credit questions on calculus tests based on current events.😊

Very cool series

fantastic lesson, thank you

Great videos great teacher. Want to see those extra videos on sedimentary rocks.

thank u very much i learn much from ur explanation style

"Meteor impacts happen all the time" - On a geological timescale, yes. On a human lifetime timescale, much less so. Over the last seventy years the dozen or so large airbursts have been detected over largely unpopulated areas, vast oceans, deserts, tundra. Only one or two multiple injury events in a lifetime, and a handful of individual injuries. That is until something larger hits.

I here recognize the N-American pratical approach to teaching. You said you enjoy metamorphical rocks. Then you should go to China, where they slice rocks in thin layers, encase them in fine carved pieces of hard wood, thus creating wonderful abstract-concrete pieces of art. I learnt to like these items over time. They are really moving, as they speak of millions of years of time, pressure, flux.... They give another dimension to our lives' ridiculus time span. They speaks of eons, they tell how continents form. And in some way even the old time Chinese who dit not have any clues in geology guessed what thoses rocks were as they saw them as "signs of nature" or "writing of nature". Some of these pieces of natural art may cost hundred thousand euros. Thank you for sharing your knowledge (from France, in Ardèche, where there are many metamorphic rocks)

Very interesting as ever, thanks Where i grew up, in the north of England, all our houses are roofed in slate tiles. We have the same geology as Scotland, our rocks were from that same ancient Caledonian mountain chain. Really enjoying these so far, you are an excellent teacher

as a kid, these where my favorite kinds of stone

An excellent presentation - thank you

Good day sir, A big thank from India🙏 Thank you sir for invaluable knowledge. We need more of your teachings in environment science.

A very nice lecture!

Awesome helpful lecture. Thank you

What's the difference between foliage vs banding because I know hornfels aren't foliated but they do show some banding (sometimes)? And Bluechist is non-foliated because it's receiving pressure from all directions right?

very nice presentation i say thank you so much

These lectures are getting really intense and exciting, absolutely amazing stuff. I noticed you mentioned we can send you an email. That would be great as I have some questions to ask you if you don't mind. Where can I find your email? Thank you.

I have many of those but I also live near the San Andreas fault near devil's punchbowl

thank you sirr really an awesome presentation.........plz do a favoyr by explainibg the barrovian zones and facies relationships..etc

Very interesting, I will look for all the previous videos too. Thank you.

awsome presentation

Amazing presentation

Your lectures are of great help to me.

Bravo

In which tectonic settings is it common to find foliated metamorphic rocks? What are the environmental conditions that make it easier to form foliated metamorphic rocks?

I don't think any of the rocks are ugly.

Thank You

Mess produces beauty 👍👍👍

At 34:57 is a host rock with a vein of quartz going in one direction and a "vein of gold" running perpendicular to it. I'm not at all familiar with a "gold vein". I understand a quartz vein that forms with hot water depositing dissolved quartz and other minerals, but how does a "gold vein" form? That's totally new to me.

I was trying to find on here the text book or books you are using for diagram illustrations? You have some really good ones on your videos better than the beginner geology book i have. I am learning at home and would love to have a more complete reference book. I plan to also try and print some of the pics as well. Thank you for your wonderful videos!

Thanks for the informative video

Hi, does anyone have any book suggestions? I'm following this class for fun, so I don't want a full on text book, but I'd love a grown up picture book so I can see more examples of the different rocks etc to help with identification. Or anything else you like reading. Thanks

I have a sandstone dark grey with what looks like calcite veins spidering all over...I thought it was Arkose, now I'm just about sure 😃 hopefully it is a piece of the seabed before the Appalachian mountains....

Thank you!

I know of a missing link in the education of geologists. They tell us that our planet Earth has the most to fear from an asteroid impact or volcano eruptions. But when we look at the many horizontal layers that we find everywhere on our planet, we clearly see the effect of a repeating cataclysm. These disasters are mentioned in ancient books like the Mahabharata from India and the Popol Vuh from the Mayans and others. They tell us about a cycle of seven disasters that separate the eras from the world. Certainly, regularly recurring global disasters cannot be caused by asteroid impacts or volcanic eruptions. The only possible cause is another celestial body, a planet, orbiting our sun in an eccentric orbit. Then it is close to the sun for a short period and after the crossing at a very high speed it disappears into the universe for a long time. Planet 9 exists, but it seems invisible. These disasters cause a huge tidal wave of seawater that washes over land "above the highest mountains." At the end it covers the earth with a layer of mud, a mixture of sand, clay, lime, fossils of marine and terrestrial animals and small and larger meteorites. Forests that existed are flattened and because of the pressure from the layers on top the wood is changed into coal. These disasters also create a cycle of civilizations. To learn much more about the recurring flood cycle, the re-creation of civilizations and its chronology and ancient high technology, read the e-book: "Planet 9 = Nibiru". It can be read on any computer, tablet or smartphone. Search: invisible nibiru 9

Which one is phyllite ?

how we would differentiate between gneiss formed from shale or granite

Which rock don’t you like?

Yes, well done !! 😍😊😎🎶😃✨

Sir please request you to make video for how do gemstones form

What is the difference between a tectonite and a melange? I've had this doubt for ages!. Good video btw

Terutama sifat bebatuan yg berguna untuk seluruh kehidupan.

Thanks

Yes

My favorite rocks ROCK!

slowly ticking through all your videos, and really enjoying them. if quartz-rich sandstone turns into quartzite, what does quartz-poor sandstone metamorphose into?

Thank you so much for talking and sharing what your thoughts beleaves and claims. Where Exactly can we find such rock process place to shape new metaphoric rocks?

This reminds me of the fact that regardless of the tectonic forces, the water in rocks cannot be compressed.

Looks like layers layed down under running water to me.

This video was gneiss....

What dog?

who are you?????

If grey whacky is a sandstone I got one you'd pull your wallet for!

i had a lot of questions whats ur email?

Rex

PENTIIIING, BUMI SEDANG BERGERAK TERUS , SELURUH DUNIA BERUBAH , GEMPA DIMANA MANA, SEMOGA KITA LEBIH MEMAHAMI CARA BEKERJA PERGERAKAN BUMI, DAN TERCIPTANYA BERBAGAI BEBATUAN.

That dog is very distracting.

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These are amazing just FYI. I'm using so many of your videos to help with my degree