September 30, 2009

Lecture 6: The Geological Revolution - Deep Time and the Age of the Earth

46 minutes

The geological revolution revealed that the Earth is of great antiquity

and yet has a history we can read in the land. We will discuss ideas

of cyclic and linear time, historical versus physical age estimates,

the discovery of geological time, and

radiometric dating methods that give us our present estimate of

4.54+/-0.05 Gyr for the age of the Earth. Recorded live on 2009 Sep 30

in Room 1005 Smith Laboratory on the Columbus campus of The Ohio State

University.

...more

By Richard Pogge

September 30, 2009

46 minutes

The geological revolution revealed that the Earth is of great antiquity

and yet has a history we can read in the land. We will discuss ideas

of cyclic and linear time, historical versus physical age estimates,

the discovery of geological time, and

radiometric dating methods that give us our present estimate of

4.54+/-0.05 Gyr for the age of the Earth. Recorded live on 2009 Sep 30

in Room 1005 Smith Laboratory on the Columbus campus of The Ohio State

University.

...more

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