12:49 re: positive feedbacks, why do you say primary production decreases during the interglacial/warm periods? That doesn’t make sense. In warm periods, primary production increases with more CO2 in the atmosphere. Warmer oceans retain less carbon dioxide, freeing it up for terrestrial plants. CO2 is a trace atmospheric gas, has decreasing effect logarithmically.. that is, assuming we raised the global mean temperature 1° from 200 to 400 ppm CO2, then a subsequent degree of warming requires an additional 400 ppm (to 800ppm) We’d need to reach 1600 ppm for the next additional degree of warming. Water vapor is a far more significant factor for warming. I think you made the same flawed assumption as Al Gore. It’s the other way around - an increase in global mean temperature precedes a bloom of life (as evidenced by increased CO2) If you zoom in on your graph it will be evident. Point of fact: CO2 has been cascading downward from the plateau preceding the Cambrian “Skeletonization” (to borrow your term😉 Because of the advent of biomineralization, over the subsequent half billion years we’ve reached an historic dearth of CO2. Thanks to the industrial age this trend has rebounded - think about this irony before you replay. If we had continued to 150 ppm (sustained over time) it would spell the death of all plants. Be thankful it is getting warmer. Maybe we can stave off the next major glaciation. It seemed inevitable not long ago.

Ok, wow! Mind blown regarding Antarctic deglaciation for thousands of years. I’m believing the Piri Reis map has more legitimacy in this light.

PLATE TECTONICS DRIVES CLIMATE, LIFE AND EVOLUTION HERE ON EARTH.

Good presentation of information. Nothing new here, except flushing out some details. I learned all this starting in 1970 from MIT and CAL TECH while in the USAF-AFTAC and studies since. Nice charts and summary. Venus-Earth-Mars can be seen as covering the tectonic spectrum across time. Water acts like both a lubricant and an abrasive depending on temperature. A super heated, extremely dense metal saturated column of water is highly corrosive, forms an effective rock splitting process. "Thermionic Acid" if you will, Ph and concentration is both temperature and pressure dependent. Columns, Plumes, Dykes and Volcanoes are a result seen in the Crust or upper surface of the Lithosphere. The idea the Lithosphere and the Mantel are hotter than they should be is an opinion based on assumptions about data. The hypotheses is interesting and a logical construct.

It's not her mic. The problem is reflections off hard surfaces in the room. Get some headphones and an EQ.

Thanks for an interesting video! I would guess that global plate tectonics is not essential for life, which would still hang around in pockets in Mars for example... And wouldn't you call Europa a plate tectonic world but of ice plates rather than of silica?

Hilgenberg solved it, but everyone ignored him. The active planets expand..

Is it just me, or has Geo Girl's Texas accent gotten more "Southern" as she's made the switch from the Southwest (El Paso, Texas) to the eastern South (Charleston, South Carolina)? Asking for a friend.

I'm relatively new to paleontology. I knew plate tectonics had an impact on the evolution of life. But what you said about life appearing before plate tectonics was news. I don't expect complex life to be on the moons of Jupiter. I reckon it's a good place to start looking for other life.

Very interesting and I was wondering how it correlates with the dead slabs that pile up as the plates get subducted😮

0:15 That's a neat little transition you did there 😮😎

I've never heard of this, but its6so cool

An interesting thought in this video is the reference to drip tectonics on Venus. This is especially interesting in light of the apparent repaving of the surface of that planet in the last 250,000,000 I've seen referenced in work from NASA planetary scientists, probably including Stern. This brings to mind the possibility planets like Earth and Venus could have experienced something like episodes of relative stasis, interrupted by what pre- tectonic-aware geophysicists used to call "orogenic storms" in which an area of 'drip' could drag down whole regions of crust, simultaneously stirring up circulation and upwellings from below. This might then incite similar drip-and-drag cycles on surrounding crustal regions. Presumably, such episodes of stasis and storm could trend rarer as the planets cooled, and the size of crustal/lithal regions would also grow larger and move more stably. Fantastic video!

I like this hypothesis! I've always had struggles with plate tectonics historical extrapolations. The ideas here address what I consider logical weak points. Definitely curious to learn more about geological variations that have been suggested.. has anyone started mapping them yet? 😲

The sun willNEVER explode! As soon as the hydrogen is used up, helium begins to burn in the sun, causing the sun to expand significantly and become a red giant. The earth may be destroyed in the process. In the end, when the helium also runs out, the sun sheds its outer shells and shrinks into a white dwarf...

Do you know if there is anything that has been published on how this may mesh with (or not with) current interpretations of the Lewisian complex?

Expanding Earth Theory?

I don't think we're anywhere near being able to detect plate tectonics outside of our solar system, but I never thought we'd be able to take actual pictures of planets, let alone detect them, outside of our solar system. Never say never.

@GEOGIRL I was totally going to alert you to this paper, but you beat me to it! Great explanation of the lithosphere. You did very well young Skywalker! I would like to have you on my channel sometime. You can educate me on the emergence of macro life.

Wow!!! 🌷😍 You are too beautiful.. whomever see you should believe that God is true and real... and whenever I see you I feel like Iam in a dream.. And when we wake up we will all realise that all this life was nothing but a dream and that only God is whats true and real.. By the pen and what they write, Divine wisdom, endless light, In Islam, the truth displayed, God’s existence, clear arrayed. From depths of cosmos, vast and grand, To smallest atom, His hidden hand, The Quran speaks of skies and earth, Life’s inception, universe’s birth. Embryonic forms, so precise, In Quran’s verses, we find the slice, Science catches up, it seeks to learn, In holy texts, clear truths discern. Splitting of the moon, a wondrous sight, History records this celestial light, A sign so clear, a prophet’s call, In Muhammad’s path, nothing small. Prophecies told in scriptures old, From Bible’s verse to Torah’s fold, Of one to come, a final seal, Muhammad’s truth, both strong and real. In Gospel’s words, and Hindus’ lore, A messenger, revered and more, From Mecca’s land, last prophet shown, To guide all paths to God’s own throne. In lineage pure, the Twelve Imams, Guided by God, with open arms, Ali, the first, the gate of lore, With wisdom vast, none can ignore. Hasan, patience in his heart, A peace-maker, his noble art, Husayn, the martyr, Karbala’s name, With sacrifice, his eternal fame. Ali Zayn al-Abidin stands, Prayer and tears in his hands, Muhammad al-Baqir, knowledge deep, In sciences, he made great leaps. Jafar as-Sadiq, truth so bright, In jurisprudence, his guiding light, Musa al-Kadhim, in patience strong, Imprisoned, yet his faith lifelong. Ali ar-Ridha, compassionate call, In Persia’s land, loved by all, Muhammad al-Taqi, the virtuous youth, In piety, he stood for truth. Ali al-Hadi, with wisdom kind, Guided hearts and strengthened mind, Hasan al-Askari, pure and just, With faith and hope, his soul entrust. The twelfth, Mahdi, hidden now, Will return, fulfill his vow, Justice will reign, oppression cease, World in harmony, truth and peace. From ancient lands, prophecies swift, Of leaders pure, in Islamic gift, Their lives reflect, the prophet’s way, In every step, in night and day. Proofs abound in earth and skies, In nature's book, no disguise, Existence grand, beyond our reach, In every star, God’s love does teach. So here, in faith, with hearts aligned, With clear mind and soul refined, Islam’s beacon, forever bright, Guiding all in this sacred light. 🌷 Scientific miracles in the quran harun yahya m.kzbin.info/www/bejne/fJSafGSgmLeUnKs&pp=ygUsU2NpZW50aWZpYyBtaXJhY2xlcyBpbiB0aGUgcXVyYW4gaGFydW4geWFoeWE%3D A Hindu priest admitting with his own voice that there is a prophecy regarding the prophet mohammed a good news about him hundreds of years before he was born m.kzbin.info/www/bejne/bYipmHunaKtki8U&pp=ygU_2LnYp9mE2YUg2YfZhtiv2YjYs9mKINmK2LnYqtix2YEg2KjZhtio2YjYqSDYp9mE2YbYqNmKINmF2K3Zhdiv Jewish rabbi proves that Prophet Muhammad mentioned in the Old Testament - KZbin m.kzbin.info/www/bejne/lXS0iH6irc-Ca7M&pp=ygVbQSByYWJiaSBhZG1pdHRpbmcgdGhhdCB0aGVyZSBpcyBhIHByb3BoZWN5IGluIG9sbGQgdGVzdGVtZW50IHJlZ2FyZGluZyB0aGUgcHJvcGhldCBtb2hhbW1lZA%3D%3D A famous Sunni shaikh admits the 12 Imams of Shias are their leaders too! - KZbin m.kzbin.info/www/bejne/eqqUZnWdfNpqnLM&pp=iAQB

9:25 Not to burst your bubble, but we were taught about plate tectonics in the 70s.

Plate tectoncs is caused by the expansion of the Earth. The exspansion is caused by the atmosphere. A planet without atmosphere shrinks. So, you can date the time when the Earth got an atmosphere by the appearence of the first cracking of the surface. The same when a planet lost it atmosphere like the Moon and Mars.

Can you do a bideo on snake evolution?

Plate tectonics and volcanism with the west coast as a focal point: kzbin.info/www/bejne/aaCWen2idq2biqc ...and also: kzbin.info/www/bejne/j6Gsk5WroZWYh5I

I mean if you speed up time the Earths crust is actually pretty liquid.

Fascinating, thank you! I’d be interested in learning more about what current thinking is on the role the giant impact that created the Moon had on shaping Earth’s interior and tectonic cycles, and what effect the continuing presence of a large and once much closer Moon had on Earth and making it habitable. Thanks! 🙏

The Drake equation needs to be reassessed , even though you say plate tectonics may not be needed for intelligent life.

terminal stagnant lid era is disaster for life on earth 😮🎉

Saw a nature study from 2021 which looked over global temperatures the past 24,000 years, the global warming today is several times faster than the rate of warming during the transition period between the last glacial maximum and the Holocene epoch 💀

OK, but how will this help me put food on my family?

What a fascinating discussion! The past leading to the far future in our planet’s tectonic history.

Thanks, quite interesting. Great presentation too!

Hey, aren't scientist measuring the speed at witch the crust slips? Don't days get shorter due to this slippage that occurs? Do geologists consider Earth's connection to the Sun and it's dramatic reaction to powerful solar Flares like volcanic eruptions and earthquakes, well coronal holes add to these reactions too.

Given this understanding, I can easily see how stagnant lid tectonics could be the dominant regime whenever supercontinenents were present and stable.

Excellent video

Could tectonic regimes perhaps be related to snowball earths? Lid regime seems to indicate more rapid surface cooling (relatively), and plate tectonics perhaps a build-up of heat that breaks the lid.

Hear me out for a second... if most planets form like asteroids, with relatively pure metals aggregating first... when these metals oxidize, they expand significantly. Expanding earth for the win 🏆 or rust ball earth I call it

Very interesting video. (You're not a girl anymore. Unsolicited suggestion: change your channel name.)