one of five major mass extinctions which the earth experienced. Mass extinctions are caused by great changes of environment‚ and these changes take creatures’ ways of living. Geologic factors are one of main factors which generate big changes. Geologists consider that volcanism is a possible cause of the Permian Mass Extinction. According to National Geographic‚ “as volcanic gases poured into the skied‚ they would have generated acid rain‚ and sulfate molecules would have blocked sunlight and cooled
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trying to create new plates by splitting old ones apart. A rift is defined as a fracture in the earth’s surface that widens over time. A more technical definition for a rift is an elongated basin bounded by opposed steeply dipping normal faults. Geologists continue to debate exactly how rifting occurs. They do believe the process is so well displayed in East Africa‚ having given the new plate to be a name. The name is the Nubian Plate. The Nubian Plate makes up most of Africa‚ while the smaller plate
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Walapai which are the people that own the land today. John Strong Newberry Was the first geologist to visit the Grand Canyon. The Grand Canyon first opened in 1893 but did not become as famous as it is today until 1919. Some theories say that the Grand Canyon formed 17 million years ago shown by the following evidence “The Grand Canyon is likely between 5 and 6 million years old‚ according to most geologists and scientists. However‚ some theorize that the Colorado River began forming the Canyon
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HISTORY OF THEORY OF EVOLUTION In 1543‚ a young Flemish anatomist Andreas Vesalius challenged Galen’s theories of the Human Body. This discovery had an impact on scientists. Vesalius’ discovery of the important differences between species also helped usher in the science of comparative anatomy‚ in which researchers studied animals to find their similarities and differences. In the process‚ they gradually began to recognize humans as being one species among many‚ with a few unique traits but
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As geologists‚ we examine layers of sediment on the Earth’s surface to approximate the dates of past geologic time periods. Ah sediment as you know is material like sand‚ gravel‚ fossil fragments that is transported by natural processes like wind ‚ water flow or the movement of glaciers. So sediment is transported and then deposited and it forms layers on the Earth’s surface over time. We examine these layers to learn about different geologic time periods including when they began and ended. For
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formation of the Grand Canyon is still in question today. Many people find themselves asking the same questions; how old is the canyon‚ and how exactly did it form? It was a process that took millions of years to get to where it is now. There are some geologist will argue that the canyon is as old as 6 billion years old; whereas others will argue the Grand Canyon it is much younger. There is not a definite answer. The formation of the canyon is also in debate today. Although nobody knows how
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is enlighten my audience about why the San Andreas Fault is dangerously important in geological history. The San Andreas Fault is one of the world’s oldest geological features and yet still one of the youngest geological features according to Geologists. The San Andreas Fault was formed over 25 million years ago. The San Andreas Fault is located California and it sits between the North American (East side) and Pacific Ocean (West side) lithospheric plates. California is commonly recognized as being
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That is why the world was at awe to find that the continent of North America possessed these mines as well. As a matter of fact‚ the past decade‚ Canada has manufactured 15% of the world’s diamonds. In 1989‚ Canadian geologists stumbled upon a dig site that contains “pipes”. Pipes are the veins that carry diamonds to the surface from great depths (Raven-Berg‚ 2005). In 1991‚ the company DiaMet found 81 diamond pipes. It was not the first diamond find in North American
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First and foremost management expertise and management experience have claimed to be the most precious assets and resources of the organisation. The professional background of all the directors including the two mining entrepreneurs‚ the uranium geologist Rebecca Paulka points out that they all experienced in their domain. The good decision making within the organisation could be a determining factor to the success of the company. The exploration company at present seems well capitalized with the
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which‚ in turn‚ bounces the signal back and triangulation uses these figures to calculate the spacecraft’s position. Geologists also use the Pythagorean Theorem to track earthquake activity. Earthquakes make two different types of waves‚ one being slower and longer than the other. If they triangulate the distance travelled by the faster waves by the slower ones then the geologists can determine the source or centre of the earthquake. Triangulation can also be used in Forensic Investigations to find
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