After watching the slideshow, speculate about why early geologists may have begun to suspect that the Earth was older than 6,000 years.


I think geologists began to think Earth is older than 6,000 years because of the fossils they may have found in the oceans or canyons. Also they might be able to tell how old the canyons are and when and how they evolved. They might have also been able to tell how old the rocks are in the canyons.