Not ALL Tectonics is ‘Plate’ Tectonics (w/Steven Baumann!)

Not ALL Tectonics is ‘Plate’ Tectonics (w/Steven Baumann!) | GEO GIRL

Рет қаралды 55,276

Күн бұрын

Many people use "plate tectonics" and "tectonics" as synonyms, but they are actually not! In this video I collaborated with Geoscientist & KZfaq Science Communicator, Steven Baumann, to cover the differences between tectonics and plate tectonics, and talk about how tectonics worked on Earth before tectonic plates formed! ;D
0:00 Intro
1:38 Plates Are Not Only Crust
4:13 What is Tectonics?
4:42 What Are Plates?
7:16 What is Plate Tectonics?
8:29 What Drives Plate Tectonics?
11:09 When Did Plate Tectonics Start?
14:04 Tectonics Before Plates? (4+ Ga)
16:04 Tectonics Before Plates? (4 - 2.5 Ga)
18:41 Tectonics After Plate Tectonics? (Future)
19:40 Continental vs Ocean Crust
21:37 When Did Continents Form?
23:00 How Did Continents Form?
25:58 What Did Earth Look Like Before Plates?
27:13 Timing of Drip to Plate Tectonics Transition
28:36 Application to Other Planets/Moons
References:
Steven Baumann's video on When Plate Tectonics Began (pt 1): • Geo Files: When did Pl...
Steven Baumann's video on When Plate Tectonics Began (pt 2): • Geo Files When did Pla...
European Geosciences Union's video: 'Plate tectonics started in the PaleoArchean': • EGU2016: Plate tectoni...
Virtual Seminars in Precambrian Geology's video: 'Geodynamic models of early Earth crust formation: Stagnant-lid, plate tectonics... - Bradford Foley': • Geodynamic models of e...
Virtual Seminars in Precambrian Geology's playlist: 'Precambrian Plate Tectonics': • Precambrian Plate Tect...
And references therein*
Stern, 2020- Tectonic regime evolution Figure: doi.org/10.1130/GSATG480A.1
GEO GIRL Website: www.geogirlscience.com/ (visit my website to see all my courses, shop merch, learn more about me, & donate to support the channel if you'd like!)
Hey there, Earth enthusiast! Check my favorite Earth-friendly products:
Bamboo toilet paper: shrsl.com/3cvku
Bamboo paper towels: shrsl.com/3cvkw
Compostable tableware: shrsl.com/3cvkz
Compostable trash bags: shrsl.com/3cvl0
Bamboo cutlery + straw! : shrsl.com/3cwfl
Eco-Friendly Tote (great for grocery shopping!): shrsl.com/3cwfp
Reusable straws + cleaning brushes (my fav!): shrsl.com/3cwft
Eco-friendly laundry detergent: shrsl.com/3cwgo
Directly offset your carbon footprint with Wren: shrsl.com/3d0t2
(Just click link, press get started, take the free C footprint quiz, then choose how much you want to reduce your footprint by donating to the C sequestration projects they're funding!)
Non-textbook books I recommend:
Oxygen by D. Canfield: amzn.to/3gffbCL
Brief history of Earth by A. Knoll: amzn.to/3w3hC1I
Life on young planet by A. Knoll: amzn.to/2RBMpny
Some assembly required by N. Shubin: amzn.to/3w1Ezm2
Your inner fish by N. Shubin: amzn.to/3cpw3Wb
Oxygen by N. Lane: amzn.to/3z4FgwZ
Alien Oceans by K. Hand: amzn.to/3clMx1l
Life's Engines: amzn.to/3w1Nhke
Tools I use as a geologist/teacher/student:
Geology field notebook: amzn.to/3lb6dJf
Geology rock hammer: amzn.to/3DZw8MA
Geological compass: amzn.to/3hfbdLu
Geological hand lens: amzn.to/3jXysM5
Camera: amzn.to/3l6fGRT
Carbon-neutral pencil bag: shrsl.com/3cvjv
Carbon-neutral backpack: shrsl.com/3cvkc
Disclaimer: Links included in this description might be affiliate links. If you purchase a product or service with the links that I provide I may receive a small commission, but there is no additional charge to you! Thank you for supporting my channel so I can continue to provide you with free content each week! And as always, let me know your topic suggestions in the comments down below!

Пікірлер: 310

@GEOGIRL Ай бұрын

Hi y'all! So unfortunately, Steve's camera was not working during our interview, so it is just the voice over, but it's still just as insightful! I hope you all enjoy this collab and go check out his channel for all things Precambrian tectonics & tons of other geology content! -> www.youtube.com/@stevenbaumann8692

@jeffbybee5207 Ай бұрын

It's fine to have the illistrations and not talking heads

@KGTiberius Ай бұрын

Great presentation! 🇻🇮 US Virgin Islands here. Can you exemplify this video using the Caribbean plate? St. Croix is different than the boundary islands. Also, the plate has moved contrary to the other plates (or conversely hasn’t moved while the American Plates did move by). 🔹 2nd point are the impact and antipode of Theia impact and Roach Limit deposition 🔹 3rd point Lunar drift out of the gravity well and tidal churn within Earth’s various core and mantle interactions. 🔹 lastly, hot spots and traps.

@debivort Ай бұрын

It was great! And I was just having a conversation with astronomy friends about the difference between oceanic and continental crust the week before.

@nonanaw4540 Ай бұрын

Great one ❤️

@ossiedunstan4419 Ай бұрын

Their should be laws against anti education on social media platforms. Like this channel

@joelmckinney16 Ай бұрын

Metal casters will recognize that we live on what is basically the "slag" that has floated to the surface of the molten mesosphere.

@AnnoyingNewsletters Ай бұрын

15:07 I was just coming here to say that. 😅

@eaterdrinker000 Ай бұрын

I'm not a metal caster, but I (and countless other people in the future) thank you for that analogy!

@Chris-ut6eq 29 күн бұрын

Good to know I'm composed of slag, never did feel pure :)

@retrothink 6 күн бұрын

As a teenager I remelted lead type in a print shop and scooped the slag from the surface before pouring new 'pigs'.

@lafenelson3212 3 күн бұрын

This is a fantastic description. Just.. perfect.

@stevenbaumann8692 Ай бұрын

Thank you for having me on Rachel!

@scionofpluto3420 Ай бұрын

Thank you Steven for teaching us about drip tectonics. This was incredibly fascinating and insightful, I had no knowledge about this mechanism before, and explains tectonics before the formation of plates, and also explains the relic hotspots that provide an alternate vestigial tectonic mechanism in the modern world.

@GEOGIRL Ай бұрын

Of course! It was so fun and enlightening, we will certainly have to do it again sometime! ;D Thanks for all the amazing info, people really like this one!

@stevenbaumann8692 Ай бұрын

@@scionofpluto3420I'm glad you enjoyed it!

@stevenbaumann8692 Ай бұрын

@@GEOGIRLmost definitely. I won't babble so much. I have a working camera now

@GEOGIRL Ай бұрын

@@stevenbaumann8692 How was the total eclipse?! It looked amazing on all the videos I've seen :D

@sergiocaprara1314 Ай бұрын

I am a theoretical physicist, with a passion for all sciences. Thank you for making geology accessible and exciting

@lasagnajohn 29 күн бұрын

Physicists be slumming it, solving major problems in other fields without even putting their pants on these days. Who'd a thunk fluid physics would be solving economic and demographic problems, lol.

@AvanaVana Ай бұрын

Nice to see Steve on here, he’s a KZfaq geology original who deserves many more subscribers.

@rursus8354 Ай бұрын

Wow, at last I understand why the continents formed. Because they're kind of a felsic foam from subduction.

@dmbeaster 2 күн бұрын

Chemical differentiation driven by heat that allows the less dense to separate from the more dense.

@barbaradurfee645 Ай бұрын

One of your best Dr Rayray 😊. ❤❤❤to Hope

@nanettenyce4167 Ай бұрын

I've been asking my geology professors to help with these questions. Thank you for providing such clear, illustrated answers on the best understanding we have so far!

@KoalaMeatPie Ай бұрын

Hey! I'm merely one of your viewers, this isn't meant to be anything. I just wanted to say that I really like your lectures and hope you keep doing them. You hit the right and a particular rare spot on the technical knowledge to simple scale. I really hope your numbers are doing good, I have been pursuing a degree in animal health and thus have found myself lacking in time to watch your deeply interesting and insightful presentations (There were Rockies before there were Rockies!?). Did you ever look into the Post Permian Extinction Fungal Event? Atop a mountain tomorrow seeing the eclipse, hope you get to see it to.

@sbabcock7476 Ай бұрын

I thank the algorithm for recommending this fascinating video & introducing me to your great channel with a bunch of cool videos to catch up on. And thanks for all the hard work making it! It’s a really interesting topic because, as far as I’m aware, no other planetary bodies in our system have plate tectonics. Which makes me wonder if they’re a critical factor (via nutrient cycling & ecosystem change) for the evolution of complex life.

@philochristos Ай бұрын

My brain is getting so big because of this channel that my scull is developing multiple ridge pushes.

@GEOGIRL Ай бұрын

Haha! Just as long as the slabs do not pull the sections of your skull down into your brain ;)

@philochristos Ай бұрын

@@GEOGIRL No subductions so far, but there could be trouble if I stop watching and my brain atrophies.

@eaterdrinker000 Ай бұрын

Bist du Klingone?

@mosquitobight Ай бұрын

Brain tectonics for the win. No smooth brains here.

@johngrundowski3632 27 күн бұрын

Thanks ,great coverage of awesome topic🪨⛰️🏔🌏

@tomschmidt381 Ай бұрын

That was great. I had not realized there were three forces moving the plates around nor the geology of the US and Canada was so different. Rocks are cool, or I guess I should say hot so they move around.

@michellem3050 Ай бұрын

Thanks for this great video! You've answered questions I've had for a decades about formation of the 2 kinds of crust, and What Happened Before. Clarification that it's all about heat loss very helpful. Also helpful are Ideas about differential temperatures of melting and how Hawaiian hot spot plumes fit into tectonics. It makes sense!

@stevenbaumann8692 Ай бұрын

Thanks for watching!

@blakeroberts4140 Ай бұрын

This video added to my understanding of, simply put, geology. I have watched many, many hours of videos on plate tectonics, geology of western N.America and it is a challenge, a big challenge to grasp these concepts. I learned on this video what tectonics is. How plate tectonics came to be. And most noteworthy describing the mantle as plastic. It is difficult to understand how a subducting mantle could move so deep into the 'solid' mantle. Now I understand this. Finally! Thank-you for your terrific geology talks.

@amacuro Ай бұрын

Thank you so much for this video!!! I've been reading some articles about early tectonics and it has become a new fascination for me. As someone who was born after Plate Tectonics was the accepted modern model, I just couldn't imagine any other process going on in our planet. So the thought of "what was before Plate Tectonics?" was like someone asking me "what was before the Big Bang" haha. Lovely stuff, I can tell you are keeping yourself current with the latest developments in the geology field

@joecanales9631 Ай бұрын

Howdy Rachel, great topic. I was a little unsure of Steve Baumann’s definition of tectonics, which he described as heat loss of the earth. I had considered tectonics as the mechanical results driven by heat loss, elastic and brittle deformation. It might be as a result of hanging out at the Center of Tectonophysics at TAMU way back in the early 70’s. Seems we were studying how rocks deform. Drip tectonics was unknown then, but earth’s internal heat was a likely culprit for the drive. I was aware of the greenstones belts, and learning much more about newer theories of their evolution. Might have to look into Steve Baumann’s channel. Thanks!

@kevinrussell1144 26 күн бұрын

It's ALWAYS in the definitions, Joe, and you were correct to question. Look up the definitions given for "tectonics". What I see is...the evolution, structure and deformation of the lithosphere, not heat loss. Heat transfer seems to be the driving force, but stars do NOT involve tectonics because stars are not the same beasts as the rocky planets. Seems to me, then, that a better definition is the interactions of rock forming components of the lithosphere and how they change and evolve in their arc from accumulations of star particles, to molten state, and on to plastic and brittle states. Plate tectonics is the longest and current champion, but will it continue forever on earth? Probably not. I didn't recall hearing about the importance of radioactive decay to the long time span of plate tectonic or even garden-variety tectonism, but perhaps I dozed off. I, too, was not taught drip tectonics, but remember reading about many who questioned when plate tectonics kicked in during the early differentiation of the earth. Lumpers, splitters, and pigeon-holers never die, friends; they are absorbed into the literature. The stripes of the classifiers NEVER change. Thanks to Rachael and Steve for the great discussion.

@bluerendar2194 2 күн бұрын

I think that's something that got lost on the cutting floor (3 hrs -> 30 min!) - as you say, tectonics is *driven* by the heat loss of the earth, and, important to this discussion, the heat differential and loss rate is what determines the structure and behaviour of the tectonics given the composition of Earth. That is, the way tectonic behaviour has changed over the past on Earth directly relates to how heat loss behaviour has changed over that time period.

@kevinrussell1144 2 күн бұрын

@@bluerendar2194 Gold star for your comment, Senor Azul.

@PlayNowWorkLater Ай бұрын

Finally! It’s like you read my mind. This is great stuff. I’ve been trying to hash through this stuff from academic conferences and lingo that was just a little Beyond my understanding. Thank you for synthesizing this into something that is digestible for someone who who is interested in geology but doesn’t have the education background to fully comprehend academic work presented to other academics in that field. Great stuff! Always enjoy the wide variety of topics you cover.

@JoesFirewoodVideos Ай бұрын

What caused the earthquake in New Jersey on Friday? Plate tectonics? We had 4.6 earthquake in SW Michigan in May of 2015 but I was in the woods cutting firewood so I didn’t feel it. My mom felt it, she thought her furnace was about to explode. I ❤ GEO GIRL

@Neilhuny Ай бұрын

All earthquakes are the result of sudden movement along faults within the Earth. The movement releases stored-up ‘elastic strain’ energy in the form of seismic waves and causes the ground surface to shake. Such movement on the faults is generally a response to long-term deformation and the buildup of stress. Not all faults mark tectonic boundaries though - most don't, but they are more minor than the plate boundary versions.

@eaterdrinker000 Ай бұрын

I felt tremors up here in Poughkeepsie, NY. First time "ever," cuz I didn't notice the one that happened in 2011. That might have been because I grew up in NYC and was somewhat used to the vibrations that subway activity caused in some Manhattan buildings.

@ahamill130 Ай бұрын

That quake was movement along a ~100 million year old transform fault, caused by tensional forces when Pangea was splitting apart and North America was moving away from Europe.

@ahamillphotography Ай бұрын

I'm sure that was a cool experience for her! The reason for the earthquake there is linked to an old normal fault formed there when North America was splitting away from Europe over 100 million years ago. At that stage, tension forces caused the plate to break, causing faults, very similar to what's happening right now in Iceland. That fault is no longer at a spreading ridge, but clearly some stresses were operating on it to activate it at the weekend.

@mosquitobight Ай бұрын

@@ahamillphotographyI think another factor in the earthquake was the ongoing erosion of the Appalachian mountains. Like an iceberg, most of a mountain chain is below the surface. As the top erodes, the roots of the mountain are buoyed upward by the denser mantle on which the mountain floats. The upward movement produces stress that can be suddenly released.

@Julian_Wang-pai Ай бұрын

Wonderfully illuminating - and the picture of how planetary tectonics evolved over the cooling phase of planet Earth is apparently transferrable(!) and maybe the typical template for most if not all planets. Amazing!

@CatharticCurios Ай бұрын

Hell yeah geogirl! So stoked to watch this & thanks for bringing more rad content creators into my feed:)

@shawnparadise6504 Ай бұрын

This video was amazing. Super interesting and well made. Thank you!

@GEOGIRL Ай бұрын

Thank you so much! I am so happy to hear that! :D

@jamesbarton1969 Ай бұрын

There is no way to know why a cat does what it does and the effort to stop a cat from doing what it wants generally is far beyond the worth of getting the cat to stop.

@kevinjkelliher Ай бұрын

unless you are obsessed with cats

@bernard2735 Ай бұрын

Thank you for always providing such interesting and high quality content. Every video delivers so much 😊

@tedetienne7639 Ай бұрын

Excellent video, and an excellent choice for a guest speaker! I subscribed to Steven’s channel immediately! I should correct you on one extremely minor point - you mentioned twice that plate tectonics will end “when Earth loses all of its heat.” Plate tectonics will end long before then. Another celestial body is a good example of this - Mars! That planet has a mantle that is too cold and brittle to allow plate tectonics, even though it still has plenty of heat in its molten core. Exactly how long it will take for plate tectonics to slowly grind to an end on Earth, we’ll have to wait a loooong time before we’re sure!

@GEOGIRL Ай бұрын

Oh yes, that is very true! Thanks for clarifying that! ;D

@artstation707 Ай бұрын

@@GEOGIRL You sound intelligent, but you're posting a lot of questionable theories. Check out the Hydroplate Theory. If you're as smart as you seem, you'll appreciate this advice.

@paulcooper8818 Ай бұрын

Very informative and well explained.

@noeditbookreviews Ай бұрын

I've never heard tectonics described that way, but of course, it makes perfect sense.

@duhduhvesta Ай бұрын

Right it makes so much sense

@StuartdeHaro Ай бұрын

I had a cat that LOVED thicker plastic bags and shower curtains. She would just sink her teeth into them. I think she just liked the puncturing sensation because she would immediately move on to another spot and do it again. It was her bubblewrap I guess.

@pikmin4743 Ай бұрын

my tortie has a major plastic fetish. sometimes she bites, sometimes licks, doesnt ever seem to consume any, but she's like a truffle pig if plastic bags are in a room

@eaterdrinker000 Ай бұрын

I'm no ultra-organic super-crunchy off-the-grid mofo, but OMG PLASTIC IS ADDICTING US ALL

@PepsiMagt Ай бұрын

That was a superinteresting talk, Dr Phillips. Y You are a treasure.

@dadsonworldwide3238 Ай бұрын

Gosh we haven't discovered much of anything on earth like tectonic plates in many many many decade actually more like a century. But I am curious to learn more about the milkyways galactic nuclei past and if earth was indeed on the outskirts of the center of our galaxy. It's the best uniformity hypothesis I've ever heard. If you ever see it up close in like the grand canyon it's horizontal ground up deposit on top really makes it hard to adopt our mainstream narrative on its ordering. It's like gyroscope earth took place as if the inside was moving faster than the mantle or vice versa. A very cool thing to witness in person at some point in life. It will draw out the scientist within us all. Lol

@StayPrimal Ай бұрын

Cheers Geogirl for the video!

@silverjade10 Ай бұрын

So... Since tectonic activity gets rid of internal heat...the plate boundaries are kinda like the pit zips on a hardshell.

@ronaldbucchino1086 Ай бұрын

Great job Doc. I look forward to your next presentation.

@shadeen3604 Ай бұрын

Great video DR GEO GIRL THANK YOU

@michaeleisenberg7867 Ай бұрын

Rachel 🛼, Superb format with Steve. Great idea 💡. 👏👏👏👏

@GEOGIRL Ай бұрын

Thanks so much! Was the first time I have tried anything like this so there were certainly some hiccups, but I want to start incorporating more interview-like videos like this so I think it was a great start and good practice for me :) And it was so fun to get to talk to him about this. We may do another one at some point about tectonics on other planets like Venus, so let me know if you'd be interested in something like that! ;D

@michaeleisenberg7867 Ай бұрын

It would be worthwhile for you to do more videos with him and other experts. Geology of other planets and moons is fascinating.

@artstation707 22 сағат бұрын

Hydroplate... hydroplate... hydroplate...

@punditgi Ай бұрын

Very well done! ❤🎉😊

@curtisblake261 Ай бұрын

Glad to include Mr. Or Dr. Baumann and give Geo Girl a little break. She works so hard.

@GEOGIRL Ай бұрын

Haha Actually, this interview format was more work for me lol! But I think it was just because it was the first time I was trying it and next time I think I will prepare better which will make editing much more efficient ;) I am super excited to incorporate more of these collabs into my channel! :D

@duhduhvesta Ай бұрын

I HAVE BEEN WAITING FOR THIS FOR ALL MY LIFE THANK YOU BOTH

@duhduhvesta Ай бұрын

22 minutes in is where it’s at!!! Look at all those cratons!!!!!!!! It’s seeing those pieces that makes so much sense in getting this.

@duhduhvesta Ай бұрын

Is partial melting like boiling salt water. The felsic is the water. It bubbles sooner. The mafic is the salt. It doesn’t evaporate away? I could be thinking about this wrong or flipped

@duhduhvesta Ай бұрын

I want be a fly on the wall on that talk between you too.

@stevenbaumann8692 Ай бұрын

Thank you for watching!

@halfnelsonchoke Ай бұрын

ive been watching geology videos for a couple of years now and always wondered where continental crust originated. Most people aren't concerned with the archaea era geology so no one ever bothers to explain it! I've also long wondered about the formation of hotspots and no one ever gets into that either. Thank you and your collaborator for the wonderful video. It was extremely educational.

@artstation707 Ай бұрын

Hydroplate Theory.

@MatthewDoye 26 күн бұрын

When I was at school in the 1970s plate tectonics was the hot new thing. Forty plus years has seen the field move on so far and it's amazing learning about all the new ideas that have developed. Thanks.

@pequerobles Ай бұрын

this is a great video. Love it 😘

@AnnoyingNewsletters Ай бұрын

I was briefly confused at the beginning because I thought *_tectonics_* came from the Greek or Latin for *_plate._* I swear it's something I've had to write down in Earth Science classes, along with it being redundant to say *_plate tectonics_* because that's essentially saying *_plate-plates,_* like saying *_ATM machine,_* when it already stands for *_automatic teller machine._* But tectonics comes from both the Greek and Latin for *_pertaining to building._* 🤷‍♂️ Correction noted. *_Mandela Effect intensifies._* 😵‍💫

@sparklytreesarecool Ай бұрын

Thank you, Rachel. Also an great summary review of plate tectonics.

@GraemePayne1967Marine Ай бұрын

1: I know you must be a good person, because you have a cat. 2. I started college in the early 1970's, after my active-duty service in the Marines. I had to choose a science course and I chose geology. I had a great professor who introduced us to plate tectonics, which was then new and NOT widely accepted. This presentation introduced me to more and newer information on the subject. Thank You for this! I will be looking for more information on plate tectonics. Now that I know there is a Lot More to learn, u will be looking our for it.

@peggieincolfaxca3818 3 күн бұрын

Thank for having Steve on

@kerianhalcon3557 Ай бұрын

You really should upload the whole vid, Gutsick Gibbon has many 3 plus hour vids about evolution and we love them. Plus I do fins Steven's lectures awesome, love his interviews.

@elizabethfierro8104 Ай бұрын

Just stumbled across your channel. I love geology and am subscribed to several channels and podcasts and now i am adding yours.

@GEOGIRL Ай бұрын

Thanks so much! So glad to have you :D

@nathanmiller5658 Ай бұрын

Super video Geo Girl! Very informative. Great to find out about Steve 's channel.

@adamredwine774 11 күн бұрын

Awesome to get this deep technical talk. Thanks for the info.

@dancooper8551 29 күн бұрын

Amazing video! Will be watching this one again and taking notes.

@siggyincr7447 13 сағат бұрын

New to your channel and you got my sub right away. Great video, very informative. I always assumed that tectonics was plate tectonics and never even considered that it was related to heat convection through the earth more generally. On a side note, I imagine I'm not the only one who might enjoy listening to you full 3 hour conversation with Steven.

@Enkaptaton Ай бұрын

I would really love to watch a three hour long vodeo of Geogirl talking to other geologists! One hour would also be ok I guess...

@ArbitraryConstant Ай бұрын

this is fascinating, thanks for doing this

@robertcook5201 Ай бұрын

Great job, most informative and interesting

@Andre-ft6wx Ай бұрын

Thanks for your work.

@7inrain Ай бұрын

Such a wealth of new information for me, thanks.

@rebeccawinter472 7 күн бұрын

The recent research into the tectonic activity on Venus is really interesting - it has a totally different tecronic regime than Earth. Mars on the other hand has its huge volcanoes, which completely has shifted the mass centre of the planet.

@colubrinedeucecreative Ай бұрын

This was great! Well done! Followed him too! I have more questions about what a earthquake looks like and what moves?

@PurpleNoir 23 сағат бұрын

What a fascinating video, subscribed!

@cafiend Ай бұрын

😽hello to your cat! And thank you for these great videos. I considered going back to school to get a degree in geology after my first one in English, but never got around to it. I have always been interested in the natural processes of Earth: geology, weather…

@daleeagar4014 Ай бұрын

Excellent analysis of the data, I really can see the drip better than the sheet like subduction of the entire boundary of a plate. Especially as the temperature at depth was higher. Better model if you ask me, even in the Siletzia stuff the plate wasn't a uniform sheet.

@Alex_Plante Ай бұрын

Great video! I learned a lot! Thanks!

@ronkirk5099 Ай бұрын

Alfred Wegner and plate tectonics is to geology as Charles Darwin and 'the Origin of Species' is to biology. They both transformed their respective fields of study and ushered in a whole new era.

@ellenmcgowen Ай бұрын

This is a wonderful video. I'm very interested in the geological history of Earth from its earliest times up to the Phanerozoic -- which of course is also interesting, but we tend to hear a lot more about it. I'd like to note that the Magma Ocean picture of the early Hadean is not universally accepted among planetary scientists, where there is a more recent competing idea that even the earlier Hadean was cool and wet. In this picture the surface of Earth solidified very rapidly after the giant impact that formed the moon. Earth in the Hadean, as in the later Archean, may have been a water world, with island arcs and crater rims projecting above water. Studies of Hadean zircons indicate that they formed under water in pillow lavas. While some of Earth's water may have been delivered by bombardment, the solar nebula during Earth's formation was rich with hydrogen, and the planetesimals that formed the planets were rich in silicon dioxide. Under conditions in the early mantle, these can react to form water, so the Earth's mantle was probably hydrated as it formed and outgassed water vapor. This, together with the lower luminosity of the young sun, lead to a cool, wet Hadean.

@stevedrane2364 Ай бұрын

Most certainly did, fascinating it was too. . Merci 👍

@joefkems8877 Ай бұрын

Hello from Netherlands 🌷 I looked over your videolist if you already made one on supervulcanos, their eruptions and especially the MtToba eruption being potentially the cause of the bottle neck hypothesis that homo sapiens experienced an almost extinction around the same time… (as you asked for subjects to further videos 😉). Looking forward 👀 and thanks 🙏 in advance. And good luck with your post-doc 🍀

@-wotiu_77 Ай бұрын

That's bs...😮.

@nsk370 16 күн бұрын

I've always wondered what early earth was like and how it changed trough geologic time, ever since i was a kid reading books on dinosaurs and prehistoric life - but i never got a solid answer and always just kind of assumed plates and continents formed directly as the molten earth cooled down, long before life appeared. This video was kind of mind blowing to me. Combined with how drastically life has changed even basic things we take for granted like composition of atmosphere, it really makes you realise how incredibly alien and unrecognisable to what we see our planet used to be for a large part of its existance.

@jameshall2769 Ай бұрын

Let's cut to the chase, where's the gold at? Ok mostly kidding, but it's worth saying that gold prospecting has driven my desire to understand more about geology and thus Techtonics which then triggers larger questions about our planet and my little garden plot on it, the solar system, and the meaning of life! lol. Good show! Keep them coming.

@jms-po7tn 7 күн бұрын

Excellent. Please see Phil Anderson's work on the Yavapai Greenstone Belt of Arizona.

@TheUltimateTerran Ай бұрын

A lot of novel information for me communicated well. Well done. Great video.

@daveanderson718 Ай бұрын

Great video for grade schools!!

@jamescampbell5474 Ай бұрын

Help!! Please make a video on Palaeomagnetism!! Some of the concepts brought up this semester are unnecessarily hard to grasp 🥲

@cavetroll666 Ай бұрын

Thanks for the video cheers from Canada 🙃

@perrydowd9285 Күн бұрын

I've been watching you for a while; then you said, "Cat". Subscribed. 😻

@davidwilkie9551 Ай бұрын

So if we reiterate temporal thermodynamical superposition of vertices in vortices, nodal-vibrational emitter-receiver holography under the holistic vertically integrated convective interpretation of Quantum-fields pulse-evolution differentiates integrated metastability here-now-forever.., the work has to be spread around Math-Phys-Chem and Geometrical phase-locked coherence-cohesion sync-duration resonance shell-horizons analysis at all scale proportioning probability as is to be expected in amplitude-frequency density-intensity quantization. None of it is trivial. Excellent presentation thank you.

@terenzo50 Ай бұрын

My cats go quite mad for the cellophane on cellophane-wrapped boxes. Including licking the cellophane which must be a good deal less than hygienic. (Probably logienic.) The pix of drip tectonics makes me sort of think that the Earth has a hernia.

@eaterdrinker000 Ай бұрын

I'm no ultra-organic super-crunchy off-the-grid mofo, but OMG PLASTIC IS ADDICTING US ALL

@terenzo50 Ай бұрын

@@eaterdrinker000 The question is: Am I getting enough plastic in my diet?

@ianhorsham7751 Ай бұрын

Slightly off topic. There is a channel called SSGEO that discusses the planetary forces on the earth and attemps to predict earthquakes and their magnitude. I wonder if this seems reasonable? Tale a look and see what you think.

@inkermoy Ай бұрын

It's kind of amazing how Io can be so active due to tidal stress while Mercury is a solid ball of rock so close to the Sun.

@GEOGIRL Ай бұрын

Yes, but Io is only about 400,000 km away from jupiter, while mercury is nearly 60 MILLION km away from the sun! ;D So it is quite a bit further :)

@-wotiu_77 Ай бұрын

It's Hollow sames all Planets

@charlessarver1637 Ай бұрын

Great episode 👍👍👍

@_andrewvia Ай бұрын

I remember the old song - And those cratons go rolling along Also, totally off topic: Do you have a plan for hurricane season? Did any hurricanes reach to your area when you were in Texas?

@cv21a Ай бұрын

Thank you. Really good.

@reidflemingworldstoughestm1394 Ай бұрын

Yes! Geo Girl is back to geology!

@GEOGIRL Ай бұрын

I appreciate your love for tectonics! But I also just want to point out that climate is also geology, Geo = Earth ;)

@reidflemingworldstoughestm1394 Ай бұрын

@@GEOGIRL Yeah, but I already know the climate and bio schtuff. Besides that they are kinda frilly and decorative like trim work, whereas the rocks are more structural, like framing.

@GEOGIRL Ай бұрын

@@reidflemingworldstoughestm1394 Hey, I can't blame you rocks are so cool! :D

@reidflemingworldstoughestm1394 Ай бұрын

@@GEOGIRL You could say they rock, but I won't.

@jamesdelcol3701 9 күн бұрын

I love geology. I love the fact that we still have a lot of research happening. We need to learn more about the earth. I know they tried to read the basalt rocks in the northwest US and could not determine age of North America because the plumes it formed in was erratic. It is hard to learn everything. Knowing the basics of density and rocks is enough for me. I am a builder. I drill, rock blast, excavate earth materials and recycle my earthwork (always sustainable) and backfill using virgin soils. I do some geotechnical work. Mini-caisson piles -125' into bedrock. The fracking is 1,000's of feet down for natural gas. I don't do that work. I don't know how I feel about drilling that far down.

@michaelclark-cdot8212 12 күн бұрын

Geo Girl...... You are almost ready for the Transition to Growth and Expansion of Planets. It took me 32 years of Plate tectonics to finally make the slow transition to Growth and Expansion of Planets. 24.5 Years later, I am finally finishing up most of the concepts for Growth and Expansion. 56.5 years is a long time to evolve concepts.

@PavelDatsyuk-ui4qv Ай бұрын

UP for statehood with Steve as an honorary yooper

@anombre1 16 күн бұрын

Please release the unedited/unshortened version. Make a playlist of them. Scientific dialog is podcast worthy. Worst that could happen is it gets extra monetized.

@jadams3427 Ай бұрын

As usual, great stuff Rachel and Steve. I have often been puzzled by why one side of the planet is covered with water. It is very fluid and could also move around Earth in less than a day and be more evenly distributed. I concluded that the centre of mass of Earth must be offset towards the Pacific Ocean. Otherwise we'd all be a bit wetter on the other half of the planet. If I am correct, then you could resolve the g force on the crust into two components... vertical and a tiny horizontal component pulling the Pacific rim continents 'downhill' towards each other, Ripping other oceans apart and making things like the mid Atlantic ridge. Does this sound silly ?

@artstation707 Ай бұрын

Hydroplate Theory. I suggest Bryan Nickel's six part series, or Pastor Kevin Lea's discussions.

@tamjammy4461 Ай бұрын

Really interesting.Having watched this it seems like it should have been relatively obvious to me that the current plate tectonics regime couldn't always have been in operation. After all I was aware that the planet started as a really hot "magma ball" ( not good on the correct technical terms, sorry) but it had honestly never crossed my mind before watching this ,so thanks. Thanks also for bringing Steve to my attention. I will now go and subscribe to his channel as well.

@Troy-ol5fk 14 күн бұрын

great collab

@gregweatherup9596 Ай бұрын

Given that fluids (gasses, liquids) volume decreases or expands based on its temperature, does a plastic deformation regime solid also change volume (minuscule as it may be) with temperature change? If so, then as a planet cools its size would shrink, and thus its surface area decreases- does this decreasing area stress on a brittle crust also play a role? I can almost picture that contributing to the formation of plates.…

@SiqueScarface Ай бұрын

20:45 I remember from my geography classes back in school the "Sial" and "Sima" layers in the Earth's crust. It occured to me much later that Sial stands for Si+Al, SIlicon and Aluminium, while Sima stands for Si+Ma, Silicon and Magnesium. It wasn't explained to us back then, just the names were dropped. Do I remember correctly, that the continental crust mainly consists of Sial-layers, while the oceanic crust consists of Sima? Are Sial synonymous to felsic (feldspar + silicon) and Sima to mafic (magnesium + ferric)?

@ChristopherSummer89 Ай бұрын

I rejoiced when I saw the Video-Topic, hoping it may shed some Light on some Thoughts that I have been having lately: Can it be the the Development of Free Oxygen through early Cyanobacteria in the Archaean somehow kicked off Plate Tectonics? I get that it would seem more obvious that tectonic Activities affect Oxygenation, but if I understand correctly, the cyanobacterial Oxygen-Production seemed to be influenced by other Factors like the increasing Brightness of the Sun above the Water-Surface, and Plate-Tectonics begin only around / shortly befoer the Great Oxygenation Event, so it almost seems like the GOE could have caused Plate Tectonics. That Oxygenation also involved the Oxidation of Iron(II)-Ions and Hydrogen Sulfide (and also cooling the Earth quite a Bit more), so maybe that Change in the Water surrounding the Crust somehow affected the Composition of the Crust and aided the Beginning of Plate Tectonics? Or in this Case, it may have aided the "Drip & Plume" Tectonics which probably set the Foundation for later Plate Tectonics? I am just a clueless Layman throwing around Ideas, please have Mercy on me.

@raulvidal2343 28 күн бұрын

I have an hypothesis (this is just an occurrence, if it was already pointed out on a paper or doesn't make sense please share it) but I remember from your boring billion video that during that time there was almost no continental drift, no major breaking between Columbia and Rodinia. From this video I take that lithospheric mantle was thinner in the Precambrian and is permanently growing until all the mantle is solid. I remember from a geodynamics book that the reason why oceanic lithosphere subducts is because lithospheric mantle is gravitationally unstable. It is denser than the plastic asthenospheric mantle, so when it is cool enough it sinks. If that's correct, then I would assume that following the birth of continents and during the following Boring Billion, the oceanic lithosphere was thinner than it is today, that means it would be a bit more stable because the lighter crust would have a bigger share of the total mass. Could this be an explanation for the lack of massive continental breakup following the assemblage of Columbia? By the way I just discovered your channel. It is perfect for geology students like me.

@Sukisunn Ай бұрын

OMG... What is this? An accurate scientific assessment of how our plate tectonics came to be. It can't be... Real science? What? Now way... Ok ok ok... I am use to sifting through so much fantasy just to get a few scraps of facts. Wonderful presentation! And your guest sounds like a super deep thinker... Kinda have to be if your thinking about what's under our feet. 😉 Both of you keep up the good work!

@pikmin4743 Ай бұрын

tectonic regime would be a cool band or album name

@eaterdrinker000 Ай бұрын

\m/ Plate Teutonics \m/

@Phoenixspin Ай бұрын

Not ALL Tectonics is ‘Plate’ Tectonics - You just destroyed my childhood.

@nicholasmaude6906 Ай бұрын

I'm wondering, Rachel, if you're going to do a video or two about New Zealand's interesting geography?

@VersaiOnline Ай бұрын

I'm curious how Earth's water wasn't all evaporated away during the hadean or archaen? A vid I watched yesterday on Sci Show about the sun mentioned that the sun's luminosity is increasing 1% every 100m years and in just 1b years the sun will get bright enough to evaporate Earth's oceans. So I'm guessing during the hadean or archaen, the sun wasa lot dimmer/cooler, making me think Earth's water must have been frozen, but Earth was still very hot from accretion then? Some models show the later, expanded sun nearly or completely engulfing the Earth. Could the sun continue to drive tectonics after Earth's own heat is lost?

@neotericrecreant Ай бұрын

I can't tell, did you get an interveiw with him or did you use clips from his videos?

@GEOGIRL Ай бұрын

We did an interview, but unfortunately his camera wasn't working so it is just the audio ;) (you can tell it's an interview if you listen close because occasionally you can hear me saying 'mm hmm' lol)

@richardservatius5405 2 күн бұрын

On the Idaho/Oregon border there was once a collison between "plates". In Africa there is a crack forming to separate two "plates". they are not shown in your map. India, Nepal, pushing North caused the himilaya mountains. New Zealand plate pushing against Australia caused massive compression. so what is the difference?

@gregoryrollins59 Ай бұрын

I have a question 🤔. Research out of northwestern university recently discovered more water under the earth's surface in the blue rock or ringwoodite than in all the oceans above. Will this change the understanding of everything you just talk about, or does it support it even more? Peace and Ahev