209_15 - GLGY209:INTRODUCTIONTOGEOLOGY Evaluation of the...

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GLGY 209: INTRODUCTION  TO GEOLOGY
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Evaluation of the Geological Time Studying the Biblical chronology, the Irish Bishop James Ussher concluded in 1654 that the Earth has been created in the year 4,004 BC. Georges Louis Leclerc, Comte De Buffon estimated the age of the Earth at about 75,000 years. His major work, Les Epoques de la Nature has been published in 1778.
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Evaluation of the Geological Time – Other Ideas Rate of accumulation of the sediments; Rate of erosion of the rocks; Rate increase of the ocean’s salinity. The Irish geologist John Joy started from the assumption that the oceans were initially fresh. He estimated the amounts of salts carried out by the rivers and concluded that the Earth is ~ 90 My old.
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Geology Lord Kelvin (1824-1907) calculated the heat loss of the Earth from the interior. Thus, he estimated that the Earth can be no older than 400 My and no younger than 20 My. The wide range of the minimum &
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This note was uploaded on 01/10/2010 for the course GEOG 209 taught by Professor Georgescu during the Fall '09 term at University of Calgary.

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209_15 - GLGY209:INTRODUCTIONTOGEOLOGY Evaluation of the...

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