Lecture 6: The Geological Revolution - Deep Time and the Age of the Earth
The geological revolution revealed that the Earth is of great antiquity\nand yet has a history we can read in the land. We will discuss ideas \nof cyclic and linear time, historical versus physical age estimates, \nthe discovery of geological time, and\nradiometric dating methods that give us our present estimate of\n4.54+/-0.05 Gyr for the age of the Earth. Recorded live on 2009 Sep 30\nin Room 1005 Smith Laboratory on the Columbus campus of The Ohio State\nUniversity.