How A Cataclysmic Asteroid Impact & Volcanism Might've Separated Australia and Antarctica
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- เผยแพร่เมื่อ 5 ก.ค. 2023
- #asteroid #impact #meteorite #crater #australia #antarctica #adelaide #wilkesland #wilkes #wilkesanomaly #wilkescrater #geoscience #geology #naturaldisaster #naturaldisaster #comet #meteoritecrater #meteorites #earthscience #geological #supervolcano #earthsciences #volcanoes #geosciences #floodbasalt #siberiantraps #deccantraps
Ever since magnetic scans were conducted over Antarctica in the early 1960s, an anomaly has stuck out to scientists. From the get go it was speculated that it was caused by a major asteroid impact, and, in time, it appears like this hypothesis is correct.
There's a good chance that the massive asteroid that slammed into Antarctica 250 million years ago created the necessary catalyst for the separation of Australia and Antarctica.
On top of that, the location of this supposed crater places it at a point that is the direct antipode to the Siberian Traps, which began its eruptions right around the time that this event is dated to have occurred. Did this impact event cause the 2 million year long volcanic eruptions witnessed at the Siberian Traps?
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The Super Volcanic Eruptions That Occurred in New South Wales:
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OzGeology is an Australian-based TH-cam channel that specializes in creating high-quality documentaries on Earth sciences and natural disasters. The content is designed to be easy to digest and covers a wide range of topics, not only focusing on geology but occasionally exploring other scientific areas as well.
It's easy to blame a third party, but I think the relationship was over already and they were just looking for a convenient excuse.
🤣 This comment got me hahaha, well done mate!
@@OzGeologyOfficial You're welcome. I enjoy your programming. If the flight from Toronto wasn't so damn long, I'd've loved to have visited Australia by now.
Nicely done sir.
It is true. Antarctica was turning cold and unwelcoming. And Australia was still young and wanted to experience life. Moving out on its own and travelling North is just what you do. And as we know, Australia is young & hot and has a lot to offer.
@@OzGeologyOfficialhow’s the Arizonan video doing?
Technical correction: there couldn't have been "grass" fires at the end of the Permian since grasses wouldn't evolve until the Cretaceous.
"That's not an asteroid.. THIS, is an asteroid" - Crocodylomorpha Dundee
Your enthusiastic spin on Geology is infectious . Keep it up. Very likely some future geologists will recall having been drawn to the subject by your videos.
I agree, to be brutally honest prior to this channel Geology wasn't really something I wasn't that interested in, but now I wait for every video. Well done OzGeographics
Well said love the way you put that into words
The antipodeal lava flows is a logical hypothesis imo - molten rock under the crust would also convey the energy of impact. I’m reminded of a similar effect of blunt force on the human brain, the contra-coup injury which occurs opposite the point of impact. I know it’s not exactly the same, but it’s a believable hypothesis. 😊
The antipode theory holds some weight. The shock wave traveling through the crust and mantle would converge from multiple directions. A large standing wave would be huge with resulting cataclysmic events.
The resulting crater from large impactor would cause a thin spot in the crust. This weakness could cause magma to upwell which would cause 2 land masses to spread. I think it all fits a narrative deserving of more research.
@@azmanabdula Thanks for comment and input. Did not know that and now I do.
Another validation of antipode theory. 65-66 million years ago chicxulub crater formed due to an asteroid event in Mexico. Its opposite point on earth in Indian Ocean where India was floating around then, Deccan traps were formed. Also in the region around Deccan traps gold mines and diamonds have been found historically, which proves that content from deep mantle was forced pushed outta crust due to a sudden impact.
@@azmanabdulaIt's all good...cheers mate
@@abhijeetmishra8842 Thanks for comment. That makes sense.
I'd like to see a computer simulation of this. I'm sure that could be done.
Thanks for the video OZ..
Side note.. If a script writer will assist you in posting more content it can only be a good thing, The way that you narrate your videos to me is what draws me in and makes me want to watch more and for some reason now I find rocks interesting..
Thanks for that! I'm so glad you're enjoying this and that it's resonating with you. It means the world to me so thank you for sharing :)
I'm a huge fan of the antipodal hypothesis myself, Oz. The timing is certainly very close--and both flood basalt provinces involve asteroid impacts at their antipodes. And the thought that an asteroid may have kicked off the separation of Australia from Antarctica is nothing short of mind-blowing to me. Lots to think about here.
It was where an alien spacecraft was stationed to study the earth and its fauna 790,000 years ago and the resulting anomaly is from it taking off using its anti-gravity thrusters... not from an impact crater boy. That mainstream media got you tricked son!!
The graphics are startlingly beautiful.
Well done.
Thanks for uploading. I'd heard of the Siberian traps causing the great dying, but never this particular impact hypothesis. I absolutely believe in dire consequences for the antipode of an impact site though.
The Siberian Traps didn't erupt out of nowhere, there's a reason an event of that magnitude is rare, flood volcanism is still little studied and little understood, but it's certainly unlike regular degular volcanism. The antipodal theory does make sense.
A channel geology hub had mentioned it recently
And mentioned a moon in the solar system (Idr of which planet) where an asteroid strike appears to coincide with volcanic activity on the opposite side of the moon
I've only recently discovered your channel, and as an amature prospector, and with my prior knowledge of victoria, asi grew up in the north east, your videos are spot on. And the way you present is easy for a normy like me to understand. Thank you.
It all sounds completely feasible, I have to thank you for your insightful commentary, fascinating
Thank you so much for watching mate! I appreciate it so much :)
Indeed, I’ve been a proponent of this theory for the last 15 or so years.
I like your content your channel is going to grow soon
Great channel!
Please don’t stop.
Love and respect
No iridium. No grass fires (no grass). Still, an interesting hypothesis. The southern edge of Oz seems to form an arc centred on the anomaly too.
Good stuff guys 😎 both the video and the comments 👌💯
Another awesome video Oz 🎉
Your channel is going really well & potential an extra person could help with more research 👌
It seems strange because the Permian/Triassic event was 150 million before Australia separated from Gondwana 99 million years ago.
learnt much from your videos keep up the great work
Fascinating and compelling ideas. Antipodal hypothesis sounds fairly logical. I do think that the impact could definitely have helped accelerate the process of Australia breaking away from Antarctica. And I think bringing another person onboard is a good idea. Thanks for the great videos, Oz!
Absolutely amazing graphics. Top effort.
You are becoming one of my fave pages.. good work, love the content..
Turn your condenser mic just a couple of degrees off-axis in its mount, to cut down on the natural "plosives" (then you dont have to eq them out)
Thanks for the tip! I SUCK at the audio aspect so every bit helps. I'll give this a crack I appreciate it mate cheers.
Thanks and cheers!
Excellent! *LIKE*
I love your content its so well made and your voice makes it even better.
Fascinating, thank you.
New stuff :-)
Lots more to come now that I'm finally settled into this new home of mine! Thanks for watching :)
Ooooh dinosaurs 👍
Looks a hell of a lot like it was, way way back then. Love these videos Oz, cheers mate
Very interesting
Got a new subscriber.
Excellent geological sleuthing.
I would love to apply for this as I am very excited on the topic and would love to be a part of things. Cant wait for the video to apply!
I think you're right on the money and this is most likely the scenario that contributed to the Permian/Triassic Extinction Event AKA the Great Dying. Between the Wilkes Land impact crater, the Siberian Traps flood basalt eruptions which happened to be antipodal from the impact site, & the break-up of Pangea around the same time isn't just a coincidence but is the best theoretical explanation we have for the worst extinction event the Earth has ever suffered.
"Siberian Traps" is an awesome name for a metal band.
The rough shape of the "bottom" half of Australia is interesting too. Roughly it could show an impact direction (as people familiar with any game with large explosions leaving holes in the ground will know), and given the continent is drifting almost completely upwards it interesting.
I really want to see a good simulation of continents previous positions over millennia, but all the resources are very amateurish. A lot is known about movement of places due to fossil records and fitting together the continent shapes, looking at the "scars" on the bottom of the ocean, etc. but it is hard to understand this intuitively without a graphical model.
Geez, that impact event wasn't just a bad weekend scenario. That would have really beat the shit out of the planet's biosphere.
I'm glad we "separated". I can't stand how cold it is in winter, as is.
Clearly this proves Australia should own Antarctica
You didn't mention, but for those that never heard of antipodal lava flows following asteroid strikes, the India Decan Traps that happened 66 million years ago and for a long time were thought to have caused dinosaurs extinction, until the Chixhulub crater was discovered, was also, at the time, ANTIPODAL to Chixhulub.
That can't be a coincidence.
I just can’t work out how anything at all survived… not just the impact, quakes & ‘lava rain’… there wouldn’t have been any normal seasons for maybe a decade - with all that volcanism 🌋
Great Southern Land by Icehouse plays in my head.
I'm glad you support the hypothesis of antipodal impact volcanism. It makes much more sense than asteroid impact alone.
Earth has experienced 5 mass extinction events. At least 3 of the 5 occurred at the same time as flood basalt volcanic eruptions.
I hope someday the dinosaur extinction is described as "climate change induced by the Deccan traps volcanism, instigated by the Chicxulub impact", not merely "asteroid wiped out the dinosaurs".
Also TIL Australia and Antarctica were split by an asteroid!
Love the idea of a new recruit. You've gotta run with what's best for growth and hitting goals.
I think yes to both questions. It was inevitable, but quickened by the collision event.
I’d like to see local fault lines in Victoria mt Dandenong and the history of Volcanoes
Another great video mate. Thanks!! 👍🏻 Have a question in regards to the size of our planet… considering all those enormous repeated impacts from bolides over the aeons must have added a significant amount of mass to the planet. They all vanished below the surface, most of it probably dissolved or molten into the magma layers below the crust and distributed throughout the entire globe… wouldn’t that result in some for of expansion of the earth? Did the planet grow slowly over time, ripping apart the crust? I once heard about a legit earth expansion theory that was widely accepted until the 1960/70s until plate tectonics took over. Could you talk about that in one of the upcoming videos? (If have u made any content about that previously, maybe point that out) 🙏🏻 😊
Considering the volumes added over the past 1 billion years, i doubt the difference would be on consequence to your proposed theory. But an interesting theory.
@@MrScandinavio Well, I have many theories…. But in the case of the expanding earth, what else could be contributing to mass gain? ;)
INXS song:
Nothing can tear us apart.......
Except an asteroid!
I love what you’re doing and sharing. I think if you decide to get someone to help with your channel they should have the same passion as yourself. Good luck 😊
Brills as usual 😊☄️✨🪐🌋
If you are open to requests; could you possibly discuss the Wilson cycle?
Can you look into the porongurup and Stirling ranges in south WA?
It's no wonder the Permian-Triassic Extinction Event was so devastating. This makes the dino killer look like a pip squeak.
This makes sense and explains some things. The rifting may have already started but this speed it up significantly.
Interesting idea. I've suspected it may have been an asteroid that triggered the Great Dying, but I envisioned it impacting in the area of the Siberian Traps, whose massive volcanism obliterated all signs of the impact.
So many cataclysms to choose from that we are truly spoilt for choice, BUT what do they say too many option obscure the underlying truths of how we could have evolved from such a chaotic maelstrom of shear carnage but we did only to create our own version of a extinction event for the same creature who inhabit this global space with us?
I’ve been a proponent of this theory ever since I came across the work by University of Ohio researchers led by Laramie Potts found the gravity anomaly known as a mass concentration or MASCON by NASA’s GRACE satellite to be the Wilkes Land Crater.
Around the solar system, we have much evidence of antipodal volcanism on the Moon, and also Mars. Yet, here, ‘lazy scientists’ do not look at the overwhelming evidence (both Siberian Traps AND the Deccan traps are somehow very violent events, started all of a sudden, but just HAPPEN to be coincident to TWO Asteroid strike events?)
Come on guys! You can do better than that! 😊 Deccan traps and Siberian traps are the result of antipodal volcanism. Period.
This video associates so much with things that definitely happened on the other side of the world😂 it's an absolute joke. The magnetic anomaly in Antarctica is common with rift basins that are ancient. There's one in southern Georgia state that's shaped like a belt and we know for sure that tectonic events were the cause and nothing short of that. Asteroid impacts would have very little impact on tectonic environments especially because for the crust to thin at the levels said of the anomaly it would have to be an impact much larger than chixulub and chixulub actually has geologic evidence to coincide with it, that being a layer of iridium. There is no evidence from the P-T extinction event of a large enough impact that would have caused extinction and crust thinning.
@@rivitraven It’s not a ‘magnetic’ anomaly. It’s a gravity field anomaly. Thanks for your ahem, ‘erudite’ comment, O learned one.
Im going to be doing a round Oz road trip soon, is there anywhere you would suggest checking out? And i mean anywhere.
Darwin
Has a scan been done on the crater site like the scan that confirmed the impact crater in Greenland? Also is there evidence of a rift valley on the ocean floor between Antarctica and Australia. I did look on google Maps but I couldn't see anything but that doesn't mean much as I am no expert.
Could the abundance of gold found on the South Australian Coast (the Bite) and Antarctica be a kind of proof?
I look forward to your videos! As an old girl that still wants to write. I've tried in the past to write proper essays. Who knows, life experience and enthusiasm might win me a mentor? I was born in Victoria, never made aware of higher pursuits, gem hunting, agate treasures to be found.
I'm obsessed with the incredible coastlines of NE Tasmania. I don't care for the gold, just my beautiful agates.
But they're all an incredible gift from the earth ❤️
Having travelled across the Nullarbor it certainly looks as though it broke off, not eroded. And that stretch of coastline must be 2,000 km +.
What is meant by a gravitational anomaly?
I'm not a geologist (obviously), but I find your videos fascinating!
From my very limited understanding just that wierd Gravity due to an anomaly in the density of an area.
During planetary formation denser elements sink to the center meaning all or at least most the heavy shit earth started with ie your Iron, uranium, Gold Copper lead ect end up in the earths core before the planet cools and a crust forms. By this logic you should have uniform ball with constant density across it and getting more dense the closer you get to the center.
Heavy elements in the crust are therfore mostly deposited later via Asteroids and meteorites or forced up via plate tectonics and what's happening in the core and Mantel after the intial formation of the earth
Due to the higher density elements present on in the impact site than the Average of the earths crust you get tiny differences in gravity near where asteroids hit letting you find ancient impact craters that have long since been buried or eroded away.
Sometimes I think we need a mass extinction event. If only to answer the questions.
This is new to me.
th-cam.com/video/simuXjzxlGI/w-d-xo.html
Video on what it would take for a asteroid to go through the Earth
I discuss the antipodal hypothesis and the infographic and paper developed by J.T. Hagstrum (2005), in my book, *_Mission: Atlantis._* The tectonic anomaly in the northeast Atlantic could have been the site of an impediment to subduction which led to island building over the subsequent 50 million years, ending with catastrophic tectonic collapse some 11,600 years ago, ending the Younger Dryas "Big Freeze."
I don't think the impact would've caused significant grass fires worldwide as it only evolved in the late Cretaceous.
Hi Mate, your hypothesis seems to add up.
You are like the Inspector Clouseau of rock doctors.
Love your work, some very interesting things you’re finding.
By chance is there anywhere near Perth, where I can go and find some gold? Seeing that Perth is sitting on a whole heap of beach sand.
Wow.
It all seems probable. However, there is a complete absence of impact ejecta from Australia or accessible areas of Antarctica. And there are other impact contenders such as the Bedout structure just offshore of western Australia which may be also associated with the formation of the Siberian traps.
Perhaps the ejected material landed in the water beyond the land masses? An impact that large could be hard to properly calculate the sheer forces involved.
@@joshkrause2977 ejecta could have reached many thousands of kilometres in every direction from such an impact. Some material may have reached orbit and reentered anywhere on earth, or even the moon.
Looking at drill cores from offshore oil fields may show evidence from the impact.
I'm interested to hear how the large area of our tectonic plate, now South of our Continent formed, mantle plumes are good at explaining Volcanic Island Arcs, but not massive tectonic plates. As a side dish, have you come across any Fluid Dynamic projections and timelines for the transfer of energy to the antipodal point of the strike ?
Antipode earthquakes would be a good example of the transfer of energy created by a meteor impact
I agree.
Hello. Bermuda Island is an impact site. Check ocean floor maps and also the plume under the island. The area is also full of ocean floor caves.
I guess we're now looking for more of the same?Are there any other 'Traps'?
If the Antipodes of Deccan and Siberian Traps are known and likely/possible causes.
Are there any other 'Traps'?
These 2 so dominate the information available I can't seem to find any.
Hey looks like you actually have a few people interested, could probably pull together a team? I will love to help out too. I'm from Melb, would love to tag along on some field trips I got most equipment and tools.
"don't worry, he's just my gym friend."
that one gym friend:
"bang!"
-you vs the guy she told you not to worry about.
Very interesting, but if I might just suggest one thing in your beautiful graphical simulation, namely the asteroids approaching earth would not have a fiery tail as your animation shows unless they were travelling through the atmosphere (ie. much closer), or were the result of an explosion in nearby space. Perhaps you were suggesting that a bigger rock hit the moon and ejecta from there was the source of the impact?
That's just stock footage. I'm limited in what I can get that's licensable when it comes to that, unfortunately, forcing creators to settle for less.
But the shock wave would it be not refracted by the nucleus of the planet and so dispersed n the other side?
They may be somewhat antipodal now but were they when these impacts hit and the eruptions occurred. As far as i understand, and i could be wrong, but was the deccan Traps triggered when the Indian subcontinent moved over what is now called the Ruinion Hot spot in the southern part of the indian ocean and the atlantic ocean would have been slightly smaller meaning the chixulub impact site and the indian sub continent were closer?
I thought the Siberian traps with an event that lasted for thousands of years but maybe it's hard to piece together because it was so long ago
Any impact this large would create events that lasted thousands of years, in Oz and in Siberia.
If I remember correctly there's a huge antipodal feature on Mercury opposite its largest impact feature
Love the Chanel! Two issues .... @1:48 LESS THAN 00001% of objects that physically interact with the earth do so at 90 degrees. This condition would need to be met, in order to even consider an antipole event, originating from a 90degree physical impact. With out addressing the total lack of ejecta... However! The "craters" and their antipole components DO exist. Plasmoid event? Ps. Considering the geographic location, a source required for a object to impact at 90degree s does not exits. It would have to be extra solar…. Thank you ! Stan
Can you tell me where all that shit that went up, came down if inland Australia is fairly stable ? Are there impact craters still evident from this ejecta ? But where was the Siberian Steppes on the 400mya Gwodanaland location on earth ? And can you tell magnetic north pole in relation
I am not a geologist, but I know water balloons.
I did not know antipodal, but I knew the concept
50 years ago.
In terms of the we hole antipodal effect. Where was the tectonic plate that the Siberian Traps eruption took place at the time of the impact. Large Igneous Provinces are almost cetaimly fed from Magma Plumes rising from deep in the mantle. There are large numbers of LIPS scattered over the face of the Earth. These likely have more to do with major extintion events than impacts. Plus the number of LIPs located on oceanic plates present another problem linking them to impact events. The oldest oceanic crust is around 200MY old. And on oceanic crust the LIPs present include the Kregulen Plateau, Orang Java along with several smaller LIPs that may have formed with it and srperated due to plate movements. The North Atlantic Igneous Province. Plus the number of LIPs on continental margibs that are likely related to the rifting events of the breakup of Pangea.
Wouldnt that time coincide with the deniliquin impact crater that is even larger?
Didn't Australia start breaking away from Antarctica like between 30 and 80 million years ago? It's a long time after the great dying or the crater.
A rally of asteroids that hit more than two places around the same geological time is more likely than the antipode. The "traps" was the other impact site.
It's an interesting hypothesis, but I doubt that the Wilkes Land imact could cause the separation, because it happened only 212 million yars after the event.
Given propagation of waves through the Earth and on the surface, the antipodal hypothesis seems borne out in recent major earthquake events that trigger events at the antipodes.
..well its still moving North to this day as are all the other continents, islands ect. Probably gave it a bit of a kick in that direction, but that's all I reckon.
I guess the concept of 'antipodal' is rather rubbery. Both Chixalub and the Deccan traps are north of the equator and the antipodal point for the Wilkes area is in Greenland.
You're not taking continental drift into consideration. The continents were at different positions 66 million years ago, and 250 million years ago respectively. You're assessing today's antipodal points.
Perhaps I have mentioned it before, but unless one correlates the data surrounding the Taklamakan Desert, ( The largest impact crater on earth, ) we will continue to ignore why, & how, our planet got it's wobble. I would love to discuss it with you.
Please use Proper case for your on screen notes as proper case is quicker to read.
Even quicker if it's justified and with a serif type font.
We look back at all these catastrophic impacts, not once looking forward, to the next one. We must know its going to happen sooner or later.
Id love to contribute if I can, i live in Riverina South West NSW, I can tell you abit about my area, nothing probably dont know.
could that be the bottom part of the victorian volcanic plain, post deniliquin impact crater? just a guess
In regards to activity on the other side of the world, isn't there some evidence of opposite side activity shown somewhere on the moon?
Yeah, makes good sense. Got to wonder how big depressions like the Pacific Ocean came about - maybe the moon made that one. Maybe without these events, plate tectonics wouldn't have started and maybe we'd never have existed. All food for thought.