Published on October 28, 2018 "All of these fossils occur in a layer that is no more than 10 cm…
Published on October 28, 2018
“All of these fossils occur in a layer that is no more than 10 cm thick,” said pontontologist Ken Lacovara of Chicxulub impact that ended the dinosaur poke. “They suddenly died and buried quickly. It tells us that this is a moment in geological time. It’s days, weeks, maybe months. But this is not thousands of years. It’s not hundreds of thousands of years. This is basically a momentous event. “
Researchers drilled in the Chicxulub crater buried under the Yucatán Peninsula, restored stones during the Gulf of Mexico who were hit by an asteroid 66 million years ago and created the niche that gave rise to gay sapiens possible. The 15 km wide asteroid could not have struck a worse place on earth. Researchers have compiled a detailed picture of the protocol after the enormous effect.
It’s hard to imagine that billions of tons of clouds suddenly begin to sprawl like a fluid, reports the BBC, but that’s what happened when the asteroid hit. Analysis of stones drilled 2016 from the remaining crater exhibition they underwent a process of fluidization, where his powdered material literally began to pretend it was a substance like water.
The effect description – researcher calls it the dynamic collapse model of crater formation – is only possible if the hammered stones in a short period can lose their strength and flow in a frictional way. And that is proof of this fluidization process from something called the “peak ring” – essentially a circle of hills in the middle of the remaining Chicxulub depression.
“What we found in the drill core is that the cliff was fragmented. It was crushed into small pieces, initially millimeters, and as a matter of fact this causes fluid-like behavior that ultimately yields the flat crater floor, which characterizes Chicxulub and all such major battle structures, including those we look at the moon, explains Prof Ulrich Riller from the University of Hamburg, Germany.
This is not a rock that is melted; rather, it’s rock that is broken by each other through huge vibration forces, says Prof Sean Gulick , the drill team’s staff at the University of Texas. “It’s a pressure impact; it is mechanical damage. The amount of energy moving through these rocks corresponds to magnitude 10 or 11 earthquakes; The estimate for the full effect is something like 10 billion Hiroshima bombs.
In the end, the rocks will regain their strength. They must build the coal ring.
The outer edge of the crater is located below the Yucatan peninsula, but the inner top ring is best available offshoreA 12 km wide objects dug a hole in the crust 100 km above and 30 km deep. This bowl collapsed and left a crater 200 km and a few km deep. The center of the crater recurred and collapsed, which gave an inner ring. Today a lot of crater offshore, under 600m sediment. On land it is covered with limestone, but the rim is traced by an arc of sinkholes.
“It is evident from what we call shear fractures – flat discontinuities where stones can slide past each other,” added Prof Riller. “We see that these cracks overpress the crushed cliffs that were formed in advance. These planar structures prove that the mountain must have restored its strength towards the end of the crater formation. “
” We explain a basic process that will occur on any rocky body, “said Prof Gulick.” For the first time ever, we now have rocks telling us what kind of deformation they have undergone to act temporarily as a liquid and then become like a stone again at the end – without melting. It does everything through overlapping deformation mechanisms. This will be a basic process that replenishes planets, not only in our solar system, but probably in all solar systems. “
Profs Riller and Gulick were part of the drilling project Expedition 364, conducted in April / May 2016 under the auspices of the European Consortium for Ocean Research Drilling (ECORD) and the International Ocean Discovery Program (IODP).
” Here comes to the great irony of history – because it was not at all the size of the asteroid, the scale of the scale or even the global reach that made the dinosaurs extinct – that’s where the effect happened “, says Ben Garrod in the BBC documentary The Day The Dinosaurs Died
Gerta Keller, a geologist from Princeton has endured decades of impossibility to claim that the fifth extinction was not caused by an asteroid without of a series of colossal volcanic eruptions, says of the Chicxulub event: “It’s like a saga:” Big rock from heaven hits the dinosaurs and the bomb goes. “And it has all aspects of a really nice story IA. It’s just not true. “
The catastrophe has consumed her for the last 30 years: the extinction of three quarters of the earth’s species – including, famously dinosaurs – during our planet’s latest mass death, about 66 million years since 19659003] Image Credit: With thanks to Louie Psihoyos, a Greek American photographer and film director who has created a powerful documentary with sufficiently incriminating evidence to convince everyone with a human river, we left that we have to do something to change our own habits and tastes to save our planet. Interview with Louie on Google Talks. Click to see the trailer for his important documentary about the 6th Mass Destruction, Racing Extinction.
Daily Galaxy via BBC