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.
@EarthandSpaceSciencesX2 жыл бұрын
Thank you!
@deepquake92 жыл бұрын
Whoopie- these are such a refresher. Remembering when one takes for granted 👍🏽
@cowboygeologist77723 жыл бұрын
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.
@digibotdotcom4 жыл бұрын
This video was gneiss....
@taimalik1110 Жыл бұрын
Professor Day, your lectures are very GNEISS. Your style of teaching ROCKS! :P
@jeremiasrobinson5 жыл бұрын
I don't think any of the rocks are ugly.
@ashishkhatik76315 жыл бұрын
Good day sir, A big thank from India🙏 Thank you sir for invaluable knowledge. We need more of your teachings in environment science.
@caiohenriquech5 жыл бұрын
Thanks. I'm a geology student from Brazil and I'm trying to remember some concepts
@lwmarti8 ай бұрын
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.😊
@stevo7288225 жыл бұрын
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.
@zzzubmno27552 жыл бұрын
I suggest coming up here to Sudbury Ontario. You can see all the rocks and formations posted in this vid. you can see ancient faults lines , granites, folds, you name it. Sudbury is a geologists wet dream and is a very unique place on the planet. Sudbury is in the middle of the one of the worlds largest impact craters (3rd largest), known as the Sudbury basin. Sudbury is also home to a second large impact creator known as the Lake Wanapitei crater. A good time of year to come would be in mid September, when it is still warm enough to hike, but cool enough for the bugs to be gone.
@adoniswalk5 ай бұрын
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".
@EarthandSpaceSciencesX4 ай бұрын
Wow, thank you!
@dawnarobertson95773 ай бұрын
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?
@EarthandSpaceSciencesX3 ай бұрын
I have a video on mountains that explains how highly metamorphosed rocks can rise to the tops of tall mountains. It’s called Geology 16.
@timdunk72786 жыл бұрын
Awesome helpful lecture. Thank you
@big1dog232 ай бұрын
Good lecture. My home state of NC has some wonderful examples of metamorphic. rock Not as common here in Oregon, but we have it.
@EarthandSpaceSciencesX2 ай бұрын
I love Oregon geology.
@jp2162 жыл бұрын
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?
@Olshia6662 жыл бұрын
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!
@jamesburke6078 Жыл бұрын
Yeah, a rabbit hole! But feels good when you solve it!
@AriessunvirgomoonlightLibraise Жыл бұрын
I have many of those but I also live near the San Andreas fault near devil's punchbowl
@EarthandSpaceSciencesX Жыл бұрын
Devil’s Punchbowl is one of my favorite places to take students to on geology field trips. Beautiful area.
@mbisetakobana8 жыл бұрын
This is really good sir!a very underrated useful information with excellent way of delivery.Thank you.
@alexolson92782 жыл бұрын
Bravo
@gouraviyerankollu5255 жыл бұрын
As always the video is easy to understand sir thnx 😇 you are really cool teacher to learn from Gud luck 🍀
@dylanwiseman32194 ай бұрын
Thanks to you, I was able to finish and succeed in my geology exam. Thank you so much.
@EarthandSpaceSciencesX4 ай бұрын
Glad I could help!
@getzvalerevich65652 жыл бұрын
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.
@Prash1c2 жыл бұрын
I think it was for the original class.
@alexcope41442 жыл бұрын
These are amazing just FYI. I'm using so many of your videos to help with my degree
@EarthandSpaceSciencesX2 жыл бұрын
That is awesome!
@richardrobertson13312 жыл бұрын
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.
@cpchehaibar2 жыл бұрын
This series rocks! Literally!
@jeffbrunswick55112 жыл бұрын
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.
@cynthiasneath63722 ай бұрын
I'm really enjoying your lectures. Thank you.
@EarthandSpaceSciencesX2 ай бұрын
You are very welcome!
@alfradejas42802 жыл бұрын
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?
@EarthandSpaceSciencesX2 жыл бұрын
They are fairly common in mountain belts and subduction zones, environments where sediments commonly get buried and compressed. In fact, my next geology video (working on it now) will cover mountains and subduction zones, so be looking for that soon!
@alfradejas42802 жыл бұрын
Thank you!
@scoobnicholas38684 жыл бұрын
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 :)
@cyberpotato632 жыл бұрын
"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.
@DavidHuber632 жыл бұрын
Thank you!
@jamesburke6078 Жыл бұрын
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....
@RichardRoy27 жыл бұрын
I am really loving these videos. So well explained.
@amberlastname16542 жыл бұрын
as a kid, these where my favorite kinds of stone
@EarthandSpaceSciencesX2 жыл бұрын
It's still my favorite kind. :)
@alexcope41442 жыл бұрын
These are amazing just FYI. I'm using so many of your videos to help with my degree
@EarthandSpaceSciencesX2 жыл бұрын
That is awesome!
@maladewi68852 жыл бұрын
PENTIIIING, BUMI SEDANG BERGERAK TERUS , SELURUH DUNIA BERUBAH , GEMPA DIMANA MANA, SEMOGA KITA LEBIH MEMAHAMI CARA BEKERJA PERGERAKAN BUMI, DAN TERCIPTANYA BERBAGAI BEBATUAN.
@maladewi68852 жыл бұрын
Terutama sifat bebatuan yg berguna untuk seluruh kehidupan.
@randycaldwell93463 жыл бұрын
Thank You
@F5ss3 ай бұрын
Very cool series
@EarthandSpaceSciencesX3 ай бұрын
Thank you very much!
@phillips.3886 Жыл бұрын
Great videos great teacher. Want to see those extra videos on sedimentary rocks.
@EarthandSpaceSciencesX Жыл бұрын
Noted!
@jamesburke6078 Жыл бұрын
If grey whacky is a sandstone I got one you'd pull your wallet for!
@mukundrathod80814 жыл бұрын
Sir please request you to make video for how do gemstones form
@MissWoofieWoo2 жыл бұрын
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
@lawneymalbrough4309 Жыл бұрын
Looks like layers layed down under running water to me.
@firdushhussain70437 жыл бұрын
thank you sirr really an awesome presentation.........plz do a favoyr by explainibg the barrovian zones and facies relationships..etc
@EarthandSpaceSciencesX7 жыл бұрын
There are some great videos on youtube that you can find that cover this in some greater depth than I have here, but Barrovian metamorphism is largely what is emphasized in this lecture (even though I never mentioned that here because the lecture is for beginners).
@stevo7288225 жыл бұрын
This reminds me of the fact that regardless of the tectonic forces, the water in rocks cannot be compressed.
@karhukivi4 жыл бұрын
Actually water can be compressed but the coefficient is very small. It is used more in hydrogeology. The modulus is 4.6×10-10 Pa−1
@ThatRemoGuy6 жыл бұрын
Thanks for the informative video
@gech118 жыл бұрын
very nice presentation i say thank you so much
@phillips.3886 Жыл бұрын
Which rock don’t you like?
@MrKalleEngstrom2 жыл бұрын
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!
@nunyabiznes44712 жыл бұрын
Informative, concise, with no extra unnecessary dialogue. First rate video! Thank you.
@EarthandSpaceSciencesX2 жыл бұрын
Wow, thanks!
@alaskancrazed1602 жыл бұрын
@@EarthandSpaceSciencesX I definitely agree I even avoid my own lectures due to that exact issue....I love when it is straight to the point:)
@sharleneburleigh30234 жыл бұрын
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!
@assasingamer35485 жыл бұрын
who are you?????
@zartashariaz99297 жыл бұрын
how we would differentiate between gneiss formed from shale or granite
@EarthandSpaceSciencesX7 жыл бұрын
It can be very challenging, but the best method (in my opinion) for a quick assessment is by looking at the porphyroblasts. Weathering tends to concentrate some ions (especially aluminum) in shales while removing others, and the porphyroblasts are where these ions wind up...typically in the form of a garnet or staurolite. Granite probably would lack these mineral phases since it would be largely unaltered.
@alexvernes92642 жыл бұрын
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)
@incanada832 жыл бұрын
Alex Vernes, it sounds lovely but, I enjoy "unsliced" rocks just as much. It's humbling to touch something so old, it boggles the mind. To use your quote (which really speaks to me, which you have encapsuled beautifully!) " They give another dimension to our lives' ridiculous time span". How right you are :-)
@khalidnyoka6 жыл бұрын
A very nice lecture!
@MrJuliane967 жыл бұрын
What is the difference between a tectonite and a melange? I've had this doubt for ages!. Good video btw
@EarthandSpaceSciencesX7 жыл бұрын
Wikipedia has great articles on both of those rock classifications and I highly recommended you look there. In short, a tectonite is a rock that possesses a metamorphic fabric formed as a consequence of shear stresses (usually along a fault). A melange (French for "mixture") is a blend of rocks typically scraped off the surface of a subducting oceanic plate and accreted just adjacent to the trench. Melanges are usually basalts, marine sediments, and associated nearshore deposits. Even whole portions of the seafloor (called "ophiolites") can be incorporated into a melange. Melanges are typically put under high pressure-low temperature conditions that yield a blue-schist metamorphic facies that is fairly distinctive. Tectonites may be present within melanges, but melanges are more a description of mixed coastal rock units whereas a tectonite is a metamorphic fabric indicative of local shear. Hope this helps!
@MrJuliane967 жыл бұрын
Thank you so much. Those concepts are now clear for me. You should do more videos of metamorphic petrology, I'd love that.
@nibiruresearch2 жыл бұрын
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
@incanada832 жыл бұрын
Ad Roest, Nibiru , I'll take a real word for it from someone like Neil deGrasse Tyson (an American astrophysicist, planetary scientist) over a wishful thinking author dreaming up "Nibiru" that doesn't exist 🙂
@zack_1205 ай бұрын
Mess produces beauty 👍👍👍
@anniepember91938 жыл бұрын
An excellent presentation - thank you
@zartashariaz99297 жыл бұрын
awsome presentation
@vladislavholmes48526 ай бұрын
Which one is phyllite ?
@muhammadfahim37362 жыл бұрын
Thanks
@bubba842 Жыл бұрын
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.
@EarthandSpaceSciencesX Жыл бұрын
Great to hear! Glad to know they are helping.
@sluggou812beotch3 жыл бұрын
That dog is very distracting.
@MasterMalrubius7 жыл бұрын
My favorite rocks ROCK!
@vijaygaikwad57106 жыл бұрын
Andrew Boehmer
@vijaygaikwad57106 жыл бұрын
I have some stone as like Impact, black, Topaz, Kimberite, carbonate, colored diamond type 90%sure 10%not sure, please suggest to me
@จรัญกุญชรวัฒนะ2 жыл бұрын
Rex
@bassriver60802 жыл бұрын
Yes
@mhafemann2 жыл бұрын
Yes, well done !! 😍😊😎🎶😃✨
@krisinsaigon7 жыл бұрын
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
@AnandKumar-bk6td2 жыл бұрын
Amazing presentation
@arunachala16 жыл бұрын
Very interesting, I will look for all the previous videos too. Thank you.
@benja_mint4 жыл бұрын
slowly ticking through all your videos, and really enjoying them. if quartz-rich sandstone turns into quartzite, what does quartz-poor sandstone metamorphose into?
@EarthandSpaceSciencesX4 жыл бұрын
If they are particularly quartz-poor and lithic-rich, they alter to metagraywackes. If they are under the right conditions, foliation can develop and it will become a schist, probably dominated with platy biotite and garnets. If it is non-foliated, a hornfels or amphibolite facies rocks may form. Hope this helps.
@Joe_exe_076 жыл бұрын
Your lectures are of great help to me.
@zartashariaz99297 жыл бұрын
i had a lot of questions whats ur email?
@EarthandSpaceSciencesX7 жыл бұрын
I don't publicly disclose my email except to students enrolled in my class. You are free to ask questions here in the comments section however. If I have time, I'll try to answer them.
@gingerreynolds45302 жыл бұрын
The rabid uzbekistan neurochemically rinse because shape ultrasonically return toward a sore base. dapper, curved radish
@TaxPayingContributor3 жыл бұрын
What dog?
@jonathansantos22712 жыл бұрын
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?
@benschulz38712 жыл бұрын
thank u very much i learn much from ur explanation style
@EarthandSpaceSciencesX2 жыл бұрын
So nice of you to drop me a kind note! I'm working hard to update them all but I'm thrilled to know these older videos are still serving their purpose well. Cheers!
@benschulz38712 жыл бұрын
Ur very welcome, im currently binge watching more of ur videos its almost an addiction haha ill send u more thanks now in advance as its well deserved...exceptional work brother