Essentials of Geology (10th Edition)

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Essentials of Geology An Introduction to Geology  Chapter 1
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The science of geology Geology is the science that pursues  an understanding of planet Earth  Physical geology  – examines the  materials composing Earth and  seeks to understand the many  processes that operate beneath and  upon its surface  Historical geology  – seeks an  understanding of the origin of Earth  and its development through time 
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  The science of geology Geology, people, and the  environment There are many important  relationships between people and the  natural environment  Some of the problems and issues  addressed by geology involve natural  hazards, resources, world population  growth, and environmental issues
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Natural Geological Hazards January 13, 2001 El Salvador (landslide triggered by earthquake)
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Natural Geological Hazards June 28, 2007 Trinity River Dallas, Texas
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Geological Resources Oil production platform Coal burning power plant
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  The science of geology Some historical notes about  geology   The nature of Earth has been a focus  of study for centuries  Catastrophism  Uniformitarianism  and the birth of  modern geology
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Catastrophism The earth’s landscapes had been shaped by great catastrophes. For example mountains and canyons forms by sudden disasters. Fit with Usser’s young earth (mid- 1600’s – 4004 B.C.) Later – Dr. John Lightfoot (26 October 4004 B.C. at 9 am)
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Uniformitarianism James Huttun 1795 “physical, chemical, and biological laws that operate today also operated in the geologic past” The present is the key to the
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Geologic time Geologists are now able to assign fairly  accurate dates to events in Earth 
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Ch 01 - EssentialsofGeology AnIntroductiontoGeology Chapter1

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