Cretaceous

Sixty-five million years ago, dinosaurs like the tyrannosaurus rex and the triceratops once roamed the Earth. Suddenly all these great creatures disappeared and it’s not quite sure how they vanished from existence. There are several theories to explain what is known to be the most popular mass extinction of all time. Asteroid The belief that an asteroid struck the planet earth is the most common and most believed theory. This theory has more evidence to back it up than just a giant rock…

During recent studies, scientists have discovered prevailing evidence which support the idea that a major meteorite impact may not have been the sole cause of the mass extinction involving the dinosaurs 66 million years ago. Researchers have discovered an array of huge volcanic eruptions in india 66 million years ago which released large amounts of gases into the atmosphere, which drastically altered the climate. This new theory does not in fact eliminate the theory of a massive meteorite…

How did the dinosaurs die There are many theories on how the dinosaurs became extinct over 100 million years ago. The theory that is most common, is the asteroid theory. The asteroid theory proposes the idea that an asteroid hit the earth, reduced levels of sunlight, and dropped temperatures, resulting in plants being unable to grow, the plant eaters dying, and leaving no food for the meat eaters. This theory is like a major chain reaction, wiping out every dinosaur on the planet. Another…

Stage 1: What caused the Chicxulub Impactor to enter the Earth’s atmosphere and hit Earth (2) About 65 million years ago an asteroid that is roughly 10 kilometres across, hit Earth on the coast of the Yucatán Peninsula in Mexico. It caused a huge explosion and left a crater that is about 185 kilometres across. This asteroid impact is commonly known to be the reason for the extinction of three quarters of the dinosaurs. (4) The asteroid soared through the sky at more than 40 times the speed of…

descend from pterosaurs like pteranodon, but from the small, two-legged theropod dinosaurs of the Jurassic and Cretaceous periods, many of which were covered with feathers. In 1860 the first bones of a pteranodon were discovered. Scientists were baffled because it wasn't a bird or a dinosaur, but it was closely related to a dinosaur. It evolved from a common ancestor in the late Cretaceous period (85-75 million years ago).…

facts about this ginormous dinosaur. This dinosaur can weigh from 13,000 to 25,000 thousand pounds. The Triceratops dinosaur can get to be really heavy! The Triceratops lived about 70 to 65 million years ago. It lived during the Cretaceous period. The Cretaceous period was one of the biggest extinction period. This period was when all the dinosaurs died and they birds lived. They were…

The Raton Basin In this paper the coal system of the Raton Baton basin will be analyzed and broken down into sections that include, structure and stratigraphy, coal quality, igneous intrusions, coal-bed methane, and the hydrocarbon production within the basin. The purpose of analyzing the Raton Basin is to understand coal diagenesis and the aspects of the basin that affect coal quality and production. Information for this paper has been gathered by several reports published by the United…

form (Crampton et al. 2014). As breccia is often found near an outcrop we could presume this unit was deposited by an alluvial fan connected to the water source that formed the sandstone (Geology.com 2005). Cretaceous clam fossils are found in the next layer of mudstone. The Cretaceous period spanned from 145.5ma – 65.5ma (Bagley 2016), this information alone tells us that between the first sandstone layer, containing Devonian, fossils and this mudstone layer is a time gap of at least 212.5…

oxygen isotope levels can be calculated for the areas of Interest, the bulk of our grant would be spent cutting the oxygen isotope levels from existing fossils. Using USGS maps we can pinpoint locations of sedimentary rock that dates to the late Cretaceous Period. Then using USGS maps of rock type, we can narrow down the sample sites by looking for marine sedimentary rock where standing water used to lay. Typical marine rocks would include…

that the Tyrannosaurus and the Spinosaurus would have met in the natural world because from what we discussed, They both lived in different continents and different time. Spinosaurus lived during the middle of Cretaceous while Tyrannosaurus lived almost 40 years later in the late cretaceous. More importantly These two predators didn’t even live during the Jurraic period which mean, calling the movie “Jurrasic Park” makes no sense. However If we just forget about the reality and pick a side…