Younger Dryas Impact? What the Evidence Tells Us
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- Опубликовано: 31 июл 2024
- The Younger Dryas was an odd time in Earth's history and a new study looks at one of the potential causes, and how likely it is that it caused by an impact from space.
Check out the paper here: www.sciencedirect.com/science...
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OK, the hypothesis suggests an impact (singular). But what if there were multiple smaller impacts instead over a short space of time? We tend to think in terms of big, dramatic disasters, and yes, they can happen, but more often than not, a lot of change is driven by lots of little things all happening at once, or over a short span of time. Our bias towards big dramas may have us looking for completely the wrong thing in the wrong place!
Perhaps instead of 1 alien mothership, it was a fleet of fighters that generated a lot of heat that melted the glaciers. Then they built the pyramids as docking stations.
Multiple impact sites seem to have been found. Because its a Comet thats mostly ice , multiple sites are guaranteed as it breaks up upon hitting the atmosphere. Impact theories for this generally say multiple impacts not 1.
@@terryenglish7132you wouldn't happen to have a source my good man? Extraordinary claims require extraordinary evidence.
@@posticusmaximus1739 The Bay and Basin secondary impacts have their axis pointing toward the Great Lakes in general , but a handful of points specifically, indicating multiple impacts that then threw up the Bay and Basin impactors.
@@posticusmaximus1739 I ve multiple posted a non N A evidence link that won't stay up for some reason ( it contains a PDF ?). Google search " younger dryas South American impacts" to see it . Its in Nature.
I’m nutting at the fact that you’re covering this
I've heard that it crashed into an ice sheet, and didn't actually reach the ground itself.
that seems most likely, especially considering the tendency for asteroids to land at the poles
I've heard that it was aliens
The lack of crater is the tip of a massive iceberg of fundamental problems with the impact hypothesis (no pun intended), even in the shortened version of the access you can see the list of points brought throught the paper, and its a VERY long one.
You are correct. Antonio Zamora's has several youtube videos on this. At least one comet hit the Laurentide Ice Sheet.
@@miquelescribanoivars5049 at least im not saying it happened, im saying if it were to, it's likely to be at the poles, making it hard to find evidence of
personally my theory is that it was volcanos or something that caused that dip in the graph
There's no mass extinction level impacts that close to present year. Also, looks like that ash was forest fire related more than anything... Between costal humans burning things en masse and killing off giant food animals that didn't reproduce quickly, the sudden disappearance of only the mega fauna in a couple places doesn't seem that out of place.
There's no possibility of us overhunting things to extinction without technology. That's truly bonkers. Climate change is WAY more plausible.
@@Manbearpig4456 because you didn't bother to look into it.
Im glad you made "short form" video of this topic. A guy i work with believes this is how the ice age happened, and we kind of debate about it now and then. This'll be something I can show him.
He won't want to know!
You’re missing impact charts, it was a meteor shower...
Meteor showers occur several times a year and don’t change the climate
Most likely it was a comet that spaghettified like the Shoemaker Levy comet did that his Jupiter in 1994. It would've dotted across Northern America,Canada, Greenland and Europe. They've found a crater in Greenland so big Paris could fit in it.
@@brt-jn7kg the Hiawatha crater is dated to 50Ma, and no other evidence supports that fantasy, so no, that is not what scientists believe.
Aren’t there also several secondary impact sites that have been discovered along the East coast of the US (Carolina Bays) that would be possible evidence of this also?
So much supporting evidence for this theory that it seems hard to deny. Iridium soil, charcoal burn layer, impact sites, tales of cataclysms from survives, massive die off, fluctuations of tide levels and planet temp…
@@brt-jn7kg Happened a couple million years ago. Not related to end of ice age events.
Okay. I thought the meteor hit a glacial ice shelf about 1 km thick. If you leave a crater mostly in ice and that ice melts doesn't that negate the crater? Also isn't most of the ejecta ice.. which still can create a really really bad day when it lands but then disappear
Or aliens could shoot the Earth with gamma rays and leave no trace that way
A 1km deep impact has a crater radius of 1km, a 5km distribution of large ejecta, and insufficient explanation for climate change.
..the hypothesis was that fragments of a comet impacted the ice sheet then covering most of the north of north America, that spatters of this created the Carolina Bays etc..which triangulate to an impact around the Great Lakes..
The Carolina bays are 90k yo thermokarst lakes that would require the largest impact in billions of years to explain as ejecta marks.
Gather information from reputable sources
@@gravitonthongs1363 think your dates are wrong and the so-called thermokarst hypothesis is the most convoluted special reasoning. Also the fact that the axis radiate from the great lakes is strong evidence
@@jeffbybee5207 they are orientated towards the ocean by aeolian processes..
Current possible geological explanations include: water pooling between dunes, playas, or thermokarst lakes as you have mentioned.
..large animals that had survived @ 22 glacial periods during the Pleistocene, starved in months
It usually takes less than months
It was probably lots of meteors not just one
The black matt layer is the perfect definition of theres no smoke without fire.
In the black matt layer from the younger dryas, theres evidence of an impact in the particals found.
Earths orbit probably went through lots of space debris from some event in space
No it was just one, and it's very well known the exact impact location and consequences, but not to the academics so far
@ApolloBeatzOfficial prove its just one impact please....
@@dirtbikerman1000 Well I tried, hope you saw my previous comment, before it was deleted. Nice moderation on this channel, doing best for science, ahahah
There are several black layers from decayed vegetation, but no significant impact markers.
How is it that some think YD was a flood, others think it was a fire, others are okay with it being both as long as they can claim there was a cataclysm that wiped out some highly advanced civilization and all evidence for it? It's Miller time!
does this mean Ice Age Collision Course aged well?-
I heard on a documentary on PBS Nova one time saying they found iridium from the end of the last ice age in Greenland and I saw on catastrophe a different the reason why there probably isn't the Creator is because the asteroid or comet exploded in an airburst or hit the ice Sheet and glaciers and all that which would have prevented the impact from forming a crater
Impacts and bolides occur frequently and don’t impact the climate. Significant material ejecta from a large crater is required to invoke climate change by celestial debris.
Talk about how "we" dismiss our ancestors after our accepted time span of history.
Could an ocean impact of an icy object disrupt currents without leaving a crater?
No
@@Manbearpig4456 aliens is a more logical explanation
@@Manbearpig4456 it's what I choose to believe. It's more exciting of an unbelievable theory than a secret asteroid melting in the ocean.
There has been recent evidence of increased iridium circa 14,000 to 12,500 years ago. And an air burst, which you mentioned but then seemed to have forgot, would not create any lasting crater yet still result in devastating and potentially culture ending ravages.
Airbursts occur often and do explain the spike.
Airburst cannot explain the climate change.
Supporting Moore's argument are traces of platinum in sites across Syria and South Carolina, a rare metal but abundant in comets, and microscopic balls of iron called “microspherules” at various locations across the globe, suggesting some ancient event transported melted iron on a global scale!
Cosmic flux is not impact evidence
There is above normal Iridium in the YD boundry, as well as significant peaks in nanodiamond concentrations in greenlands ice sheets at 10,900 B.C.E.
Thank you Graham Hancock.
Unfounded reports by bias groups only.
I watch a lot of Graham Hancock interviews and he doesn’t say that there was one large impact - although one or more sizable impacts struck the North American ice sheet. He says there were possibly many small impacts spanning over thousand years. Also, checkout Boneyard Alaska.
We haven’t found significant evidence of one impact let alone many.
Boneyards are deposits from flooding events such as glacial dam release which is expected when the planet warms. No impact required or supported.
I respect Graham Hancock for all his work, but he is wrong about many pieces.... it was just one big scale impact that even moved the whole earth's crust and geo-poles. It's there, just in plain sight, but academics and Graham didn't discover it, but it's known already to some
@@ApolloBeatzOfficial any science to go with that fantasy?
@@gravitonthongs1363 Sure, because that's not a fantasy at all, but a real thing, and there is more scientific evidence than we have with the plate tectonic movement theory, which is just wrong.... not entirely, but wrong as we have it today... so, it's a thing of which perspective you take.... if you take academics point of view, you ll continue to call it a fantasy and so on, even after I show you where that gigantic impact took place. It's there just in front of your eyes if you look on China. I will publish more proof early this year.
@@ApolloBeatzOfficialeagerly awaiting something more than speculation
As far as comets, they tend to explode in the atmosphere, they also can sweep a planet with their tail, then there is the two mile thick ice sheets that are as hard as a rock, so a lack of impact crater is hardly exclusive evidence.
Airbursts and Impacts into ice can’t explain the significant climate change
Hitting the Laurentide or impacting just above, it would not leave a crater. In addition to rapid rises in sea level, that sort of impact would make it rain and rain and rain of course the north American megafauna and the Clovis people would be done for.
The other current theories, specifically, climate change, some cross species illness, or suggesting that human hunters actually drove everything to extinction all seem quite anemic. Something dramatic happened to the world or at least the northern hemisphere about 12,800 years ago.
A few km of ice sheet can only hide an insignificant few km of impact crater, not enough to significantly contribute to the meltwater release or atmospheric pollution, and would still leave an abundance of obvious evidence which has not been found.
A fairly rapid return to ice age temps would cause the sea levels to drop. More water held as ice leaves less water in the oceans, ergo the beginning of the younger dryas would not result in a flood.
Younger dryas was NOT just 1 impact but, several hundred from broken up meteors
Evidence?
@@russellmillar7132 I am leaning more toward Comet impact or impact over the Lauren Tide ice sheets . It would count for the swift disappearance of the North American megafauna And the simultaneous exit of the Clovis culture. After the massive flooding, all the water that had been released as steam would come down as rain for weeks or months. As I’m sure you’re aware of there are multiple flood stories and cultures around the world. It’s always good to keep an open mind.
@@surfdocer103 The scenario you describe is very popular with those who believe in alternative history doctrine. I might try to take on your view point by point but it sounds as if your mind is made up. And if you don't have an open mind there is no way you'll challenge the assumptions that you've borrowed from Graham and Randall etc.
Yeah. HE WAS THERE
The Younger Dryas impact hypothesis, and the mistaken notion it was a one-off (when similar climatic fluctuations happened in other interglacials as well), has been disastrous for not just palaeontology but also conservation and modern ecology.
How so? By the confusion and conspiracy theories it's causing?
@@posticusmaximus1739
Yep. That and the fact people are increasing using this as an excuse to not consider extinct Pleistocene megafauna as a missing component of modern ecosystems.
@@bkjeong4302 that makes sense though, since usually new scientific breakthroughs generate significant pushback from mainstream scholars. This has happened many times before in the history of Science.
I think the fact that every theory that goes against the current mainstream or academic science, is blanketed as conspiracy is a huge problem. There are many legitimate avenues of research being done and yet, the only notice any of it gets is when it's labeled conspiracy. The fact is, these people don't want their work removed for new work. Science is about studying evidence, not denouncing all others. That's how religion works.. you'll always have conspiracy theories. That does not make a specific area of research bad. It's your perspective that is bad here.
@@daroth7127 The scientific breakthroughs are made by mainstream scholars. They are reviewed and analyzed by mainstream scholars. We come to know about scientific breakthroughs by the media reading papers published by mainstream scholars and writing articles about them. If the evidence for a given scientific breakthrough is of a quality and quantity that it continues to confirm the hypothesis that led to said breakthrough, then it is eventually accepted by mainstream scholars.
But the fact that a claim or assertion gets pushback from scholars does not guarantee that it's true or reasonable.
Maybe Moth Light Media? A longer vid was done implied Younger Dryas has much less to no effect on other areas of earth. IIRC, Australia showed no indicators for effects. Impression I got is major impact on North America, Siberia, and northern Eurasia.
North02 did a in depth video like that
Please please please consider Antonio Zamora's research.
Obvious pseudoscience that fools the gullible, but not the educated fortunately.
Everyone talks about impacts on land, how is the situation different with a water impact?
H20 in the atmosphere warms the planet
..Yes, 70-plus percent of the Earth's surface is water..
I do not know if an extraterrestrial impact occurred near the time of the Younger Dryas. However, the extinction of the megafauna around that time was not caused by an impact.
Most people are shocked when I tell them that surface gravity on PART OF the Earth’s surface was increasing from a lower level at that time. My two books ‘Ice Age Extinctions, A New Theory’ and ‘The Gravity Theory of Mass Extinction’ explain how a gravitational gradient around the globe has happened in the past.
Briefly, when a large surface mass on the Earth moves to high latitude (e.g., sea water to ice), and therefore closer to the rotational axis of the Earth, something must happen to conserve the angular momentum of the Earth. That something is the offsetting of the Earth’s core elements from centricity which results in a gravitational gradient; lower surface gravity in one longitudinal region and a commensurate increase in surface gravity antipodally.
This happened during every glacial period lowering surface gravity in a region. This process reversed during every following interglacial period causing extinctions due to the increased surface gravity.
The question is why was it so devastating in the last interglacial period (20K to 14K years ago)? The graph of temperature during this period does show a greater increase in temperature during the final interglacial. However, a graph of the amount of polar ice melted during this and prior interglacial periods would be of value.
holy shit evangelion is real???
I want to believe
A cometary debris field containing various types and sizes of atmospheric impacctors not excluding methane and other hydrocarbons
…can’t explain the temperature change.
Why did the Druid build home like bomb shelters? Ongoing meteor showers?
Tunguska was an air bust and didnt leave a crater.Its called an air burst for a reason.Also,YDB papers for North America and Western Europe, the group decided to run analyses of impact-related proxies in search of the YDB layer,” Kennett says. This yielded the presence of microscopic spherules that researchers interpreted as forming by melting due to the extremely high temperatures associated with impact. The layer containing these spherules also show peak concentrations of platinum and gold, and native iron particles rarely found in nature.
There are arguable craters for Tunguska, and meteor crater was also an air burst. The lack of a crater is also only one part of a litany of issue with the hypothesis.
@@RaptorChatter There are no craters from the tunguska explosion.
Lake Cheko is a potential crater for it. Additionally lidar hasn't been used over large parts of Siberia, meaning that the presence of a larger potential crater, or craters hasn't been thoroughly studied.
@@RaptorChatter Right.No crater.
Tunguska had no effect on climate, yet deposited plenty of evidence.
The bias study which you mention is refuted. Cosmic flux is expected to be found.
Don’t forget it didn’t have to hit the ground The Tunguska event was a large explosion of between 3 and 50 megatons that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate, Russia, on the morning of 30 June 1908. Destroyed 200 miles worth of land didn’t kill anyone imagine had this been a bigger meteorological disaster several rocks 🪨 bursting over north America’s South America and Europe
No resulting climate effects though.
The crater is Saginaw bay. Gravity surveys of the area show the rim of the crater, and the “Carolina bays” are a portion of the butterfly ejecta pattern.
Saginaw is a basin from the weight of the ice sheet. There are no impact markers there.
Carolina bays are 90k year old thermokarst lakes.
@gravitonthongs1363 Nope. The Carolina bays are not 90 k years old. Check out Antonio Zamora's work presented in many youtube videos.
What I find funny is all the focus on the Younger Dryas. The Younger Dryas is but the last of at least 20 D-O events that occurred during the last Ice Age. It's not unique and if you look at past climate records it was in fact EXPECTED.
What isn't expected is what happened AFTER the Younger Dryas, not what cause the Younger Dryas
@@Manbearpig4456 Look at the past climate records. Look up a thing in Geology called Dansgaard-Oeschger events. Yes, it was repetitious and expected.
That doesn't mean they know the cause but that also doesn't mean they don't have theories.
@@Manbearpig4456 You are missing the point of what my original post was about. The Younger Dryas was a continuation of a climate sequence spanning the last ice age. The anomaly is what happened AFTER the Younger Dryas. There are at least 24 Younger Dryas like climate events that spanned the last ice age so it is NOT an anomaly.
@@Manbearpig4456 because of the pattern. Why do you not understand this?
@@Manbearpig4456 there is most certainly a pattern. When something repeats 25 times it's a pattern. It may not be on the exact time scale each and every time but the Younger Dryas was most certainly simply the final cold spell in that pattern.
Do you think a comet makes more sense or something?
@@Manbearpig4456 Why is an impact even needed to cause such? Now you need to explain not only the lack of a single impact Crater but MULTIPLE impact craters and the associated markers for each D-O event you want to claim it caused.
The more the science and technology evolves, the more sceptical i grow of our known archeology and geology. The charcoal spike we created in merely 150 years of time is nothing on an earth geological scale. But totally different than most natural events. I don´t jump on board of controversial "lost civilization" theories right away but i have agree with ideas like saying if we were hit now by a cellestial object who knows what would be left behind a couple of hundred years later, maybe nothing at all. So proposing we could explain things that long ago just by looking at layers of soil without knowing the other context is at best hypocritical.
Many things would be left behind if we got wiped out. Space debris, plastics, and a wide variety of other things.
Why don't you just ignore the Carolina Bays and numerous other indications of YD impacts?
Because they're not relevant. They're karst structures, not related to any impact. In addition, this paper gives counters to the ideas which support a hypothetical impact.
No they are not. @RaptorChatter
@@justmenotyou3151 evidence over ignorance
@@gravitonthongs1363 evidence is all over the map.
@@justmenotyou3151 …supporting thermokarst or playa formations.
A huge fire ball would burn everything up, not leave dinosaur bones all over.
What is the general consensus by the scientific community that caused the YD? Since it's not an impactor.
You need a source of energy to melt the glaciers. If someone doesn't like impactors, then they need to name the other source.
@@terryenglish7132there has been 26 or more cycles of glacial melting and reforming in the past 1M years or so. So all are from impactors?
@@posticusmaximus1739 No, only the one that happened too quickly. If all the glaciers ice then, was placed on the equator, it wouldn't have melted fast enough . So the Sun as a source is out. Also out are volcanos. Both would have raised temperatures Earth wide to melt the ice, but that didn't happen.
The Younger Dryas was caused by influx of cold meltwater into the North Atlantic caused by the start of the current interglacial.
And before you ask “but then why did the Younger Dryas not happen during earlier interglacials?”: IT DID.
@1:35 - Such explanations always seem to be a desperate attempt to try and blame something other than the spread of anatomically-modern Humans for the megafauna extinctions that happened at the same time they moved into a new region...
Except that we now know humans were in North America at least 10-20,000 years before this.
@@RobertDPore Enough time to actually get populated enough to cause a mass extinction, yes.
It's actually really interesting, because a paper last month (in my August review) discusses the Rancho La Brea extinction as a factor of human expansion of fire
Because that level of extinction of nearly all megafauna species, including the large predators, would require that these stone age hunter gatherers killed mostly for sport instead of for food and resources. Why would the people who allegedly just crossed a land bridge from Siberia into North America suddenly go blood thirsty against all of the largest and most dangerous animals, the toughest of prey, when they didn't do that in Eurasia? Why wouldn't these blood thirsty tribes wipe out all the other tribes and move back into Africa and make all of their megafauna extinct too? I mean, these stone age weapon makers wereso good at hunting they were able to kill of an entire continent's megafauna, why wouldn't they have done the same on the previous continent's they inhabited? The real desperation is when people just blame humans for everything even perceived as negative when it comes to the environment.
The " Desperate attempt" would be the over hunting explanation. Every thing over 50 lbs went extinct. Also lots of smaller animals. Skunks on your menu ? Also the "Clovis" went extinct too. Someone did the math on just the Mammoths being hunted to death. It gave ridiculous results on the level of people eating or wasting tons of meat per day.
Joe Rogan fans are NOT gonna like this one 😂
Did he do a thing on this? I'm general I ignore Rogan
yeah what's the deal
@@RaptorChatter i believe Joe Rogan is the reason this fringe theory has taken off recently.
@@RaptorChatter multiple shows, actually. Hes brought on guests like Graham Hancock and Randall Carlson on to talk about that and how it potentially wiped out super advance ancient civilizations lol. their conviction is entertaining.
@CJ-du3wm JR thinks there is a link between the YD and egyptian pryamids. There was a big global reset and in a few thousand years, humans that hunted/gathered for hundreds of thousands of years; were now erecting massive stone structures that define logic.
Watch Randall Carlson on this subject.
Or you could watch a reputable geologist
Outstanding video, great charts, and impact photos - Clovis Civilization (North America) didn’t go out without a reason
Solar activity is most likely.
…said no scientist
An impact crater doesn't need to exist. If many fragments were to enter our atmosphere and explode as many airbursts, the destruction would be worse than a single impact of similar mass. That's why nuclear bombs explode at elevation. More energy is distributed to a wider area. This has been documented many times.
We move through the Taurid meteor belt twice per year but this debris belt doesn't have an even distribution. We may have passed through a higher concentration of larger comet debris more than once, which rained down and exploded. There might have been larger meteors, along with the airbursts, that did make an impact on the Canadian ice sheet, where a crater was muted into soil and later buried as the glaciers melted away. The Carolina Bays are thought to be formed by ice ejecta and point to Michigan and Canada as the impact origins.
The fact that researcher still point to a missing impact crater as proof of no extraterrestrial source of a Younger Dryas catastrophe is disingenuous at best.
The missing crater, and the rest of the evidence presented.
No geologists thinks the Carolina Bays are impactor pr ejecta marks.
Airbursts and minor impacts on to ice sheets can’t explain the temperature change. Significant material pollution in the atmosphere is required, or just the shutdown of ocean currents (accepted explanation).
@gravitonthongs1363 You sir are incorrect.
@@justmenotyou3151 You don't know jack, Jack.
@@bobbray9666 I am unfamiliar with "jack" but I do know enough about the Carolina bays to say you are incorrect in your statement.
My posts on this are now gone. The paper fails to take into consideration the work of Antonio Zamora and the formation of the Nebraska rain water basins and Carolina bays that were caused by an impact.
... Or maybe you are unaware about the fact those geological features had been already interpreted as the likely result of the collapse of ice dams during the withdrawl of the glaciers.
@@miquelescribanoivars5049alien hydroponics project?
I just had posts not post as well, or posts simply disappear. Its happened on you tube before.
@@miquelescribanoivars5049 check out Zamora's work.
Carolina bays? Are you talking about Pamlico Sound? If so that's uterly laughable nonsense to think that's an impact feature.
Comet fragments like Russia.
…obviously can’t explain the extreme temperature change
I thought that it was proven that the younger dryas was caused by the sudden release of a major ice dammed lake?
It's still the running theory but they aren't sure if it was melt water from N. America, Eurasia, both? And what causes the melting? Many contribute it to volcanism. Source: wikipedia
No way could subduction remove a crater that quickly, this lossy goosy 'it could always be an impact if we just find the crater' is really unscientific. We have way too much fetishizing of impacts from the pop culture fallout of the KT impact theory, which almost cetainly did NOT the cause that Extinciton. It was the flood vulcanism which has coincided with eache of the 5 great mass extinctions and in proportion to the severity of said extinctions. The nice thing about flood vulcanism is that a million cubic kilometers of lava deposits dosn't get erased by errosion even after billions of years so can't go around hypothesizing them out of thin air.
Kpg*
The Deccan traps don't align with the extinction that well though, and more recent dating of them has shown the largest eruptive episodes were a bit younger than the extinction.
Today I learned there are still people that question impact caused extinction. Ironic talking about the lack of evidence for the Younger Dryas Impact and simultaneously ignoring the overwhelming evidence pointing towards the Chixculub impact being the primary driver of the K-Pg extinction.
The Hancock/Sepehr/UnchartedX *LAHT* (Lost Ancient High Technology) suckers aren't going to like this.
It is my daily hobby to unhinge them.
Nobody's claiming space craft. For " high civilization" think indoor plumbing.
@@terryenglish7132 _"Nobody's claiming space craft"_
Those that are not seem to be in a minority. Most of the ones I've heard are claiming the ancients had a higher level of technology than we have now in the modern world. I wish I'd a dollar for every time one of those chuckleheads pointed at some ancient stoneworks and proclaim "We can't cut that precisely and/or lift anything that heavy with today's machines!"
You listed names . I'm unfamiliar w the third , but Ben and Graham are both in the indoor plumbing , not spaceships camp. ... Yes, just because someone personally can't figure out how something was done, it doesn't mean Aliens did it , but there's plenty of evidence of humans doing things that indicates unknown means. In Egypt , The saw over cuts that wouldn't happen w hand tools is a prime example. The amazing pre Egypt vases that are so precise and so thin would be another.
@@AlbertaGeek ruclips.net/video/E5pZ7uR6v8c/видео.htmlsi=9VIsLkFZuVz3Fc8s This is for your last line. A grandfather moves 20 TON slabs by himself using hand tools.
Wow ! I kept waiting for the turn around ; but there wasn't one. Twenty years ago maybe these ideas could have been pushed, but now there's simply too much evidence for the strike. The biggest thing is , w out a heat source to melt the glaciers they can't melt quickly enough. Moving them instantly to the equator wouldn't have done it.
I feel the same away about your comment; no turn around.
promo sm
🤣🤣🤣🤣🤣
What about the iridium found by Andrew Moore group in 2020 dating to the younger dryas time?
en.m.wikipedia.org/wiki/Younger_Dryas_impact_hypothesis#:~:text=In%202020%2C%20a%20group%20led,evidence%20supports%20the%20impact%20hypothesis.
Unverified speculation of minor iridium spike in solids within the strata (they found a few micrometeorites as we would expected).