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Cretaceous-Tertiary Mass Extinction

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How did Dinosaurs go Extinct? Over the past few centuries or so, scientists have long endeavored to unravel the enigma surrounding the Cretaceous-Tertiary Mass Extinction, which took place 65 million years ago. This event is most notorious for the halt of existence for the dinosaurs, undeterred by the fact that nearly three fourths of all flora and fauna species subsisting on Earth went extinct. Consequently, Paleontologists have proposed a profusion of theories to decipher how the Cretaceous-Tertiary Mass Extinction transpired. However, a sheer bulk of the theories makes no sense whatsoever. For instance, in the early 20th century, paleontologist George Wieland argued that dinosaurs ate themselves into extinction (Switek, “The Top Ten Weirdest …show more content…

In 1980, physicist Luis Alvarez and his son geologist Walter Alvarez proposed the theory that a cosmic impact from an asteroid or comet provoked the Cretaceous-Tertiary Mass Extinction. Scientists later on found hints of an asteroid collision when they noticed an inordinate crater, more than 180 kilometers wide, near the town of Chicxulub in Mexico. This collision was omnipotent in strength, as it would have released as much energy as 100 trillion tons of TNT (Choi, “Asteroid Impact That Killed the Dinosaurs: New Evidence”). The asteroid impact was found to have materialized 65 million years ago, concurring with the Cretaceous-Tertiary Mass Extinction. Moreover, both iridium, a metal typically scarce on Earth’s crust but more prevalent in asteroids and magma deep within the planet, and impact ejecta, matter ejected out of a crater by an erupting volcano or during a meteorite impact, were found in anomalously high amounts in the thin worldwide layer of clay which marked the Cretaceous-Tertiary Boundary. Furthermore, quartz crystals found near the Cretaceous-Tertiary Boundary were detected to show a distinctive pattern of fracturing caused by high-energy impacts or explosions (“What Killed the Dinosaurs?”). All things considered, the a dramatic asteroid impact may as well be the reason why dinosaurs don’t coexist with us humans

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Hematite, quartz, and clay are the mineral in rocks. It was deposited in beach from environment. The event recorded here is a transgression of sea level (intercontinental seaway). Benton Shale Formation was our next stop. Its 90 million years old.

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The idea of catastrophism or “consecutive creations”, is the theory that changes earth’s crust geological history from sudden violent and unusual events. Catastrophism is the idea that Earth has been affected in the past by sudden, short-lived, violent events, possibly worldwide in space. This view holds that the present is the key to the past, and that all things continue as they were from the beginning of the

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The dinosaur extinction theory – a large asteroid impact and a giant volcanic eruption at the end of cretaceous – also supports that dinosaurs were cold blooded, when the dust due to the meteorite covered the earth, then the sun light could not penetrate the smoke and dust, thus sunlight did not enter the earth for many years, this lead to the drop in temperature on the land, as dinosaurs were cold blooded they could not raise their body temperature without sunlight and hence were

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INTRODUCTION The Cretaceous Period, spanning 65.5-146 million years ago (Mya), was a world different from what we are familiar with today. Planetary changes during this period included the extinction of dinosaurs and drastic global warming. The breakup of the super continent Pangea had started about 30 Mya, and seaways had begun to form and cover landmass that had once been a part of the super continent (Geologic Time). Today, scientists know that one of these landmasses, the North American continent as we now know it, was at one point covered by a vast inland sea known as the Western Interior Seaway.

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Title Researchers and scientists have constructed extensive research on dinosaur’s extinction. Speculation instead of real evidence seems common in most theories about the dinosaurs’ extinction. However, Jay Gould’s essay “Sex, Drugs, and the Extinction of Dinosaurs” is the complete opposite of speculation over evidence. Rather, Gould uses the mix of persuasive techniques, such as rhetorical questions, logos, along with profound evidence to not only disapprove of other theories but convince readers of his place on the dinosaur’s extinction.

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On the other hand, the Mint Canyon Formation along Aqua Dulce Road consists of sedimentary rock that is mostly sandstone and conglomerate. On this stop we learned about the sediments that formed the rock and their deposition from a river 12 million year ago. Our two last stops covered material on faults and rocks. The Vasquez Rocks were said to be form from the San Andrea Fault, and the Vista Point of the San Andreas Fault also covered material on the

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Below the turquoise waters of Mexico’s Yucatán Peninsula lies the site of a long ago mass murder. In a geologic instant, most of the world’s animal and plant species went extinct. Drilling through hundreds of meters of rock, investigators have finally reached the "footprint" left by the accused. That footprint marks Earth’s most notorious space rock impact. Known as Chicxulub (CHEEK-shuh-loob), it’s the dinosaur

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The making of film, or the concept of it, has been around since the beginning of the 18th century. The lens of the camera has captured some of the most beautiful things, but also the most prejudice. Stereotypes of races, ethnicities, and gender have always been around but were widely considered acceptable in films of that era. Almost as long as there have been people filming, there have been people fighting for equality to be presented on the big screen. Danez Smith is one of these modern fighters in his free verse poem “Dinosaurs in the Hood.”

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Again, the narrator brings up the meteor, named Chicxulub, to compare how the meteor and death are related. He explains that this meteor came sixty-five million years ago and that “seventy-five percent of all known species were extinguished, including the dinosaurs.” He compares the incident of the meteor to his daughter’s situation because both the meteor and being hit by a car are unexpected events that both ruin lives. Also, the narrator states “calculate the chances

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Extinction is could be great thing and it would greatly increase the planets biodiversity, it would be good for the environment, and it would be good for the economy, because who would not pay to see a dinosaur in real life? De-extinction is the process of bringing an organism that is either part of the same family of or looks like

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Kortenkamp, Steve, and WK Hartmann. “Impact at Cumberland Gap: Where Natural and National History Collide.” Planetary Science Institute, https://www.psi.edu/sites/default/files/newsletter/summer04/Summer04.pdf. Accessed 6 December 2022.

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The rock layers in the Grand canyon really show how an awesome God he is. The Fossils located in the Grand Canyon mostly came from the water killing the animal and preserving it( Ribokas 3). There are also many types of fossils in the Grand Canyon. Most of the fossils came from the world wide flood, also known as Noah's Flood. The definition of a fossil "Is remains of an organism preserved in a petrified form or as a mold or cast in the rock."

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During the film the paleontologists developed 2 different hypotheses. On one side paleontologists believed that birds ancient ancestors were actually dinosaurs and, the other did not believe that dinosaurs are related to birds. Paleontologists believe that early stages of birds actually were runners on the ground with short arms that were covered in feathers but, were to weak to sustain flight. Therefor Paleontologists that opposed the claim that dinosaurs are ancient ancestors of birds because they believed it was physically impossible for running dinosaurs to be able to fly off the ground and developed flying through gliding from the tops of trees. One of the scientists that support the claim of dinosaurs acquiring flight from the ground

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(Steffen et al., 2011; Lewis and Maslin, 2015). There have even been numerous calls to recognise this influence by renaming the most geological epoch in humans’ honour”

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(shc.stanford.edu, Dinosaurs and Dragons Oh My!, October 2,

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