review1 - REVIEW FOR TEST 1 Summary • Environmental...

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Unformatted text preview: REVIEW FOR TEST 1 Summary • Environmental geology is the use of geologic information to better understand and manage our environment • The cultural bases for environmental degradation are ethical, economic, and political • There are eight fundamental concepts – no need to memorize them but to remember what each stands for… Chapter 1 Philosophy and Fundamental Concepts The Story of Easter Island Easter Island located off the coast of South America was settled about 1500 years ago. However, over-population coupled with a massive over-use of the natural resources resulted in quick loss of sustenance With deforestation, they did not have the raw materials to build boats or houses and the loss of top-soil resulted in barren land surface with no agricultural capability Very soon, villages began fighting with each other and everything came to an end. Are we on the same path on a global scale? Definitions Geology Science of processes related to the composition and structure of the Earth and its life Interdisciplinary science relying on aspects of chemistry, physics and biology Environmental Geology It is the use of geologic information to help us solve conflicts in land use, to minimize environmental degradation and maximize the beneficial uses of our natural and modified environment. Fundamental concepts of Environmental Science • Human population growth • Sustainability • Earth as a system • Limitation of resources • Uniformitarianism • Hazardous Earth processes • Geology as a basic environmental science • Our Obligation to the future A giant excavating machine in this mine can move Earth materials at a rate that could bury one of the Egyptian Pyramids in a short time. CONCEPT 2 SUSTAINABILITY Sustainability implies that the future generations have equal access to the resources that our planet offers With respect to renewable resources such as air and water, this is easy to define For non-renewable resources, this means (a) Extending their availability (b) Substitutes for these uses Two specific abuses of our natural resources are logging and mining Figure 1.10 Average residence time Calculation of the average residence time for a cubic meter of water in a reservoir where input = output = 1 m 3 s-1 and the size of the reservoir is constant at 100,000,000 m 3 of water. Earth….Home Image of the Earth Centering on the North Atlantic Ocean,North America, and The polar ice sheets.Given this perspective of our planet it is not difficult to conceive it as a single large system. The Gaia Hypothesis [1] Life significantly affects the Planet [2] Life affects the environment for the betterment of life [3] Life deliberately or conciously controls the global environment Concept 4: Limitation of Resources • The Earth is the only place we have to live and its resources are limited – Not economically feasible to colonize the moon or Mars • The resources on earth are limited – Large-scale recycling programs needed – Unwanted pollutants could be considered resources out of place Concept 5. UniformitarianismConcept 5....
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This note was uploaded on 02/10/2011 for the course GEOL 103 taught by Professor Lakshmi during the Spring '10 term at South Carolina.

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review1 - REVIEW FOR TEST 1 Summary • Environmental...

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