We’ve all heard that dinosaurs went extinct 65 million years ago but did you know this all started in Mexico? On this episode, we dive deep into how the dinosaurs went extinct.

A hundred million years ago, within the asteroid belt between Mars and Jupiter was a collision between a rock among the asteroid belt and one of a different trajectory. This collision caused rock fragments to be scattered, with one of those pieces directed at earth. After it’s 100 million year journey, this asteroid by passed all other space rock and the earth’s last line of defense, the moon. Dropping into earth’s atmosphere burning hot and bright, brighter than a million suns, this meteor impacted the earth in the shallow waters of mexico causing what we call the Yucatan crater.

The Yucatan crater also called the Chicxulub (Cheek-sha-lube) crater is an impact crater buried underneath the Yucatán Peninsula in Mexico. Named after the town of Chicxulub, near where the center of the impact occurred, this crater was formed by a large asteroid or comet crashing into the earth. The asteroid responsible measured 6.2 to 9.3 miles or 10 to 15 kilometres in diameter. This impact had the force of 100 million, million tons of tnt or 10 billion Hiroshima bombs. The asteroid dug down 12 miles or 20 km into the earth’s surface which soon collapsed as the heat caused the the surface to act almost as a liquid. Like a single drop of water hitting the surface, the impact pushes down then pops back up greater than the surface of the water, in this case it is estimated that the central uplift made up of sand, rock and water rose up to be 6.2 miles or 10 km tall. After the impact had settled, it left behind what is called peak rings which are formed by the uplift material collapsing down. The Yucatan crater is the first example on earth that has been found to show peak rings such as the ones seen on the moon, mercury and mars.

It was Discovered by Antonio Camargo and Glen Penfield, geophysicists who had been looking for petroleum company in Mexico. They had noticed a ring of cenotes or sinkholes in the ground that cast a circular arc throughout the Mexican jungle. Later, NASA’s Shuttle Radar Topography Mission revealed part of the 110 mile or 180 km diameter ring of the crater.

The time of impact coincides precisely with the Cretaceous–Paleogene extinction period 66 million years ago. The dinosaurs stood no chance of survival as a cloud of vaporized deadly gypsum was sent into the air. The thick cloud blocked out the sun causing most life, including the dinosaurs to be baked by surface air temperatures of 300 degrees Fahrenheit or 150 degrees celsius. Had this impact been minutes earlier or later it would have likely landed in the ocean which would have vaporized mostly water. While still catastrophic for the planet, the dinosaurs would have still survived. The collision was so strong it is estimated that 75% of plant and animal species on Earth became extinct, including all non-avian dinosaurs. It is also believed a massive change in climate was caused by this impact. Most species that survived were underground or underwater animals able to escape the heat and destruction caused by the asteroid.

Ferns being an incredibly resilient plant were the first to bloom in profliifc amounts across the globe. The same rings true today, after a forest fire, ferns are often the first plant to grow among the ashes. Though it would take millions of years for the planet to recover, this event paved the way for the rise of humans.


Image from page 80 of "The dinosaur book : the ruling reptiles and their relatives" (1951)

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This article has 8 comments


    No we would survive an asteriod. Firstly, we most likely would be able to stop one from hitting us to start with, with nuclear devices at it, on it or dug into it.  The asteriod might be doing 30 km/s, but so is the earth, it goes around the sun at 30 km/s, so it wouldn't taek much for us to make the asteriod overshoot or undershoot a collision with earth. Further, if it hit, we still have a lot of technical and infrastructure. And an incredible ability to manipulate and create our own environment. what species has such incredible ability to adapt then ourselves? We have satellites, nuclear powered submarines etc etc. I have no doubt there would be survivors.  It might cause us some economic havoc but it most definitely would not get us. We are quite a lot smarter and resourceful than the dinosaurs.  Also they were very unlucky where it hit. It could not had hit in a worse place, a shallow sea with sulphur bearing rock.

  2. altarush

    This is logical explanation. I heard a professor say that it wasn’t a meteor, but a spaceship that landed.

  3. Alex Contreras

    they also believe after fungal disease came to dominate killing most non warm blooded animals birds being warm blooded survive

  4. Daniel Pedersen

    In the video game Dead Space's universe, a Marker was found in the crater, which means the asteroid carried a Marker and it killed the dinosaurs.

  5. Lezly Mejia

    Just yesterday at 11 am something very beight went past bye it was almost like a shooting star but it only whent halfway through the night sky like it came them it left like from my vision i saw it only go so far but not far at all like it stopped but it was pretty sure it was very bright im not sure what it was but for sure i think it wasnt a shooting star i need to look up if a shooting star is a small meteor or something but yeah idk what it was

  6. Ronnel Echavez

    I've read an article debunking the common belief that if the asteroid landed into the deepest part of an ocean or any place outside the sulfur-rich Yucatan, the dinosaurs would have survived. A 6 mile asteroid traveling 45,000 miles per hour could easily penetrate the deep ocean floor. The destruction it would cause may not be on the same level but would still be enough to wipe out the dinosaurs. Even with much lesser sulfur, the amount of carbon and steam it would spread on the earth's atmosphere could still block the sunlight and rain nonstop for several months destroying much of the planet's vegetation. The ocean floor is also filled with the highly toxic frozen hydrogen sulfide. Once released by the heat of the impact, it would be a disaster. Much of the volcanoes too are in the ocean and the impact would have led to greater volcanic activities.