#chicxulub — Public Fediverse posts

#Evolution didn’t wait long after the dinosaurs died
Marine ecosystems began recovering within just a few thousand years after the asteroid strike
The findings invite a rethink of how rapidly evolution can rebuild biological diversity — not just as it did after the #Chicxulub asteroid struck Earth 66 million years ago, but perhaps also today and into the future as #climatechange and other human pressures accelerate the pace of ecological upheaval.
https://www.sciencenews.org/article/evolution-dinosaurs-chicxulub-asteroid
https://archive.ph/Zy2W7

Today in "What the hell are you talking about Avaris?" I noticed something weird about the US river systems... namely that a lot of them spread out like cracks from the Gulf of Mexico. Not only that but the Mississippi and Missouri rivers lead up to some of the best dinosaur dig sites in the US... which got me wondering if these paths have any relation to Chicxulub or if it's pure coincidence.

#randomthoughts #paleontology #chicxulub #dinosaurs #rivers

#paleontology songs thread (help me find more!) 4/x Amoeba People - Chicxulub https://www.youtube.com/watch?v=hEkHKX4wrUw
https://en.wikipedia.org/wiki/Chicxulub_crater #Chicxulub #Dinosaurs

Just spotted this dramatic depiction of the ring of #cenotes caused by the #Chicxulub impact in #Yucatan - https://en.wikipedia.org/wiki/Cenote#Chicxulub_crater - in the 2nd episode "Forests of the Maya" of the 2017 BBC documentary series "Mexico: Earth’s Festival of Life": didn't know that the pattern was that rich and cleanly delineated. Is there a scientific publication that shows it with similar clarity?

Brought out from a discussion elsenet: would Earth now be warm enough to support large, #nonavian #dinosaurs today? This is a fair question, because as bad as global warming is—and it's going to get worse—we're still nowhere near the hottest times of the #Mesozoic.

The answer is, it was *generally* warmer than the present day, but #global #temperatures went up and down considerably, as you'd expect over such a long stretch of time—about 175 million years from the first dinosaurs to the #Chicxulub impact. Dinosaurs as a #clade did fine the whole way through, although of course with plenty of various groups dying out in the meantime.

Also, the planet has always had warmer and cooler regions. Many large dinosaurs lived comfortably in polar regions that had #climates comparable to the cooler parts of the temperate zones today. The idea that non-avian dinosaurs exclusively inhabited steaming jungles or baking deserts has been embedded by generations of paleoart, but it's just wrong. If the impact hadn't happened, they'd still be thriving.

That being said, #sauropods in particular seemed to prefer warmer environments, so their range might be a lot more limited now than it was then, and it's possible the ice age(s) would have finished them off. Other famous giants like #tyrannosaurs, #ceratopsians, and #hadrosaurs would still be widespread, and smaller ones like #dromaeosaurs ("raptors") would be as numerous as coyotes and wildcats are in our world.

Dinokiller-Einschlag: Krater als Oase? Wieso sich das Leben am Einschlagsort so schnell erholte. #Chicxulub #Dinokiller #Einschlagskrater #Kreidezeit #Massenaussterben
https://www.scinexx.de/news/geowissen/dinokiller-einschlag-krater-als-oase/

The discovery of #Chicxulub, which supports the dino-killing asteroid theory is a fun read. A non-academic and a journalist announced a result, but all the leading academics were not paying attention. Eventually their validation was accepted but took a decade to be heard.

https://en.m.wikipedia.org/wiki/Chicxulub_crater#Discovery

> Penfield also recalled that part of the motivation for the name was "to give the academics and NASA naysayers a challenging time pronouncing it" after years of dismissing its existence.[

#scicomm

The structure of the end-Cretaceous dinosaur fossil record in North America: https://www.cell.com/current-biology/fulltext/S0960-9822(25)00310-0 -> New research suggests the theory that dinosaurs were declining before #Chicxulub is the result of a poor (and misleading) fossil record: https://www.discovermagazine.com/the-sciences/new-evidence-debunks-the-theory-that-dinosaurs-were-declining-before-the

My 25 years of palaeoart chronology...

Some zooms from my 2022 painting of a Thescelosaurus (front lit by the low Sun from the west) amidst the Tanis devastation caused by the end Cretaceous Chicxulub asteroid impact. Also features are Triceratops and Quetzalcoatlus.

#Art #Painting #PaleoArt #PalaeoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Birds #Reptiles #Palaeontology #Paleontology #Chicxulub #Thescelosaurus #Tanis #Triceratops #Quetzalcoatlus #JurassicPark #JurassicWorld

My 25 years of palaeoart chronology...

Here's a 2022 painting of a Thescelosaurus (front lit by the low Sun from the west) amidst the Tanis devastation caused by the end Cretaceous Chicxulub asteroid impact (the orange glow from the south). Also features are Triceratops and Quetzalcoatlus.

#Art #Painting #PaleoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Birds #Reptiles #Palaeontology #Paleontology #Chicxulub #Thescelosaurus #Tanis #Triceratops #Quetzalcoatlus #JurassicWorld

Attention-Worthy Links for December 22nd, 2024

https://bit.ly/awl122324

#BCI #Neurotech #ALS #paralysis #neuromodulation #oaks #PETM #Quercus #temperate #Northern #Hemisphere #Southeast #sea #level #rise #NOAA #tides #Greenland #sinking #TikTok #Ban #Influencers #Extinction #dinosaurs #extinction #climate #volcano #meteor #Chicxulub

Attention-Worthy Links for December 22nd, 2024

https://bit.ly/awl122324

#BCI #Neurotech #ALS #paralysis #neuromodulation #oaks #PETM #Quercus #temperate #Northern #Hemisphere #Southeast #sea #level #rise #NOAA #tides #Greenland #sinking #TikTok #Ban #Influencers #Extinction #dinosaurs #extinction #climate #volcano #meteor #Chicxulub

Attention-Worthy Links for December 22nd, 2024

https://bit.ly/awl122324

#BCI #Neurotech #ALS #paralysis #neuromodulation #oaks #PETM #Quercus #temperate #Northern #Hemisphere #Southeast #sea #level #rise #NOAA #tides #Greenland #sinking #TikTok #Ban #Influencers #Extinction #dinosaurs #extinction #climate #volcano #meteor #Chicxulub

@BlippyTheWonderSlug @chad

NGL the free-air gravity anomaly over the #Chicxulub structure is wild AF 🔥

It is an ill-asteroid that blows nobody any good.

"Apocalyptic Asteroid Impact Was Great for Ants - How Ant Agriculture Rose from the Ashes of Dinosaurs"

#ants #asteroid #asteroids #science #fungi #antagriculture #agriculture #chicxulub

https://www.404media.co/email/070c90b1-2896-4473-b39f-f59aab36b55b/

The #Chicxulub Impactor—the #asteroid that killed the #dinosaurs—had a smaller companion, which formed the #Nadir Crater off the coast of west #Africa and caused an 800m high #tsunami to sweep across the Atlantic: https://bbc.com/news/articles/c62m04v0k0no #science #astronomy #geology #palaeontology #paleontology #cretaceous #palaeogene #paleogene #extinction

#Asteroid wiped out #dinosaurs, not a #comet
Analysis of #ruthenium #isotopes showed impactor was a carbonaceous-type asteroid.
Scientists identified likely impact site: large crater in #Chicxulub, #Mexico, first discovered by geophysicists in 1970s. The impactor that created it was sufficiently large (11-8km, or 7-50mi) to melt, shock, and eject granite from deep inside the Earth, probably causing a megatsunami and ejecting vaporized rock and sulfates into the atmosphere
https://arstechnica.com/science/2024/08/scientists-conclude-chicxulub-impactor-was-an-asteroid-from-beyond-jupiter/

🪨 An asteroid wiped out the dinosaurs, not a comet, new study finds | @ArsTechnica

｢ Now an international team of scientists have reaffirmed the original hypothesis, according to a new paper published in the journal Science. They analyzed ruthenium isotopes from the Chicxulub impact crater and concluded the impact was due to a carbonaceous-type asteroid, likely hailing from beyond Jupiter ｣

https://arstechnica.com/science/2024/08/scientists-conclude-chicxulub-impactor-was-an-asteroid-from-beyond-jupiter/

#chicxulub #asteroid #jupiter #space

Dino-killing #asteroid came from beyond #Jupiter

Nice study based on ruthenium #isotopes in #impact layer of the #Chicxulub #crater

https://www.science.org/content/article/dino-killing-asteroid-came-beyond-jupiter

From 16 Aug: Asteroid That Killed the Dinosaurs Has a Bizarre Origin Story - Around 66 million years ago, a rock over 6 miles wide collided with Ear... https://gizmodo.com/asteroid-that-killed-the-dinosaurs-has-a-bizarre-origin-story-2000487452 #asteroids #chicxulub #dinosaurs #space

The space rock that wiped out the dinosaurs 66 million years ago was a rare strike from an asteroid beyond Jupiter, a new study details. The finding pins down the nature of the fateful space rock and its origin within our solar system, and may benefit technology that forecasts asteroid strikes on our planet, Live Science reports:
https://www.livescience.com/space/asteroids/dinosaur-killing-asteroid-rare-rock-beyond-jupiter

#Dinosaurs #Asteroid #Jupiter #SolarSystem #Chicxulub #Space

Der Dinokiller kam von jenseits des Jupiter. "Täterprofil" des Chicxulub-Impaktors liefert neue Hinweise auf Art und Herkunft. #Chicxulub #Asteroid #Dinokiller #Einschlag #Erdgeschichtwe #Massenaussterben
https://www.scinexx.de/news/geowissen/der-dinokiller-kam-von-jenseits-des-jupiter/

An asteroid wiped out the dinosaurs, not a comet, new study finds
Analysis of ruthenium isotopes showed the impactor was a carbonaceous-type asteroid.

https://arstechnica.com/science/2024/08/scientists-conclude-chicxulub-impactor-was-an-asteroid-from-beyond-jupiter/?comments=1&comments-page=1

#Asteroid
#Dinosaur
#Extinction
#Chicxulub

The #Chicxulub impactor that wiped most #dinosaurs from the map is confirmed to be a C-type (carbonaceous chondrite) #asteroid most recently from the main belt between Jupiter and Mars: https://mashable.com/article/asteroid-chicxulub-impact-origin-dinosaurs #science #palaeontology #paleontology #extinction #geology #astronomy #yucatan #crater

TIL: Searching for #Chicxulub on #Google has quite an impact…

https://www.google.com/search?q=Chicxulub

I read people talking about the #Tanis site in #NorthDakota again.

For those unaware:

This is a place where there was a mass burial of fish roughly 66 million years ago.

It has been suggested to be associated with the K-Pg impact.

I urge caution about that interpretation.

At the Tanis site's distance from the #Chicxulub crater; the first shock from the impact - and presumably any associated seiche - would have happened before any spherules from the impact had time to fall to the ground.

That is one way to use the start_date tag. 😃
#Chicxulub #ChicxulubCrater

☄️🤿 https://thekidshouldseethis.com/post/cenotes-yucatan-deep-diving-video

“Fewer people have visited some of these drowned caverns than have stepped on the surface of the Moon. As #divers have explored further, they’ve discovered the #cenotes are actually part of a huge complex of tunnels and #caves. In fact, when viewed from above, hundreds of cenotes can be seen scattered across the landscape.”

#video #mexico #Chicxulub #Yucatán #science #exploration #womeninstem

I'm too tired to come up with any witty commentary about this. Just sad and disgusted.

Brief summary: paleontologist Robert #DePalma, who shares his cousin Brian's cinematic instincts, made a big spash a few years ago with the discovery of the "Tanis" site, which appears to preserve the day of the #Chicxulub impact. Since then he's milked it in the media for all it's worth. Well, as much as most scientists dislike that kind of behavior, it's how you keep the grant money rolling in. #Dinosaurs are maybe more popular than ever, but they're lousy at paying their own bills.

He's made many dubious claims before about the site, many carefully hedged so he could retract them later. It's a dangerous game. This time, it very much looks like he's done something much worse.

#Tanis is real, and it's a remarkable discovery. DePalma's inability to distinguish between flashy PR and outright fraud will accomplish nothing but tarnishing all the real #paleontology work done at the site, by anyone, for years to come. Good scientists like #During will suffer the consequences.

Yeah. Don't do that.

https://www.science.org/content/article/paleontologist-accused-faking-data-dino-killing-asteroid-paper