In Walter Alvarez’s article‚ “Asteroid and Dinosaurs”‚ his original goal was to research more in depth about plate tectonics. Sadly‚ his research was sidelined because of his intriguing observations of the KT boundary. When Geologist make original discoveries‚ they go about researching by highlighting the aspects of the nature of science. For example‚ they test hypotheses about events that happened long ago‚ they rely on communication‚ a lot of evidence‚ and collaboration. Eventually they end up
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Desert’s include precious mineral deposits which were produced in the dry atmosphere or which were exposed by erosion. As desert areas have got a arid weather they’re best spots for natural preservation of items and fossils that may assist geologists know the region. Glaciers are produced as snow and ice thicken and gathers with time‚ changes to ice‚ and starts to move in an outward direction and down under the pressure of its own mass. The procedure of glacier development and establishment
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of Wegner’s theory back in his time because he wasn’t a scientist. He went off of his own thoughts with no evidence. He had no experience in geology. But later in 1930 Wegner’s would pass away before the decision on his theory was not approve by geologist. Therefore after decades the theory would disappear into obscurity. Somehow later in the 1960’s the theory that called plate tectonics. So as of today there are no problems to Wegner’s ideas and thoughts. It is told that Wegner’s theory is the foundation
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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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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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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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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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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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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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