I bought our property in North Florida because of a tree... You could walk up the limbs from the ground. Using the charts for Live Oaks. Ours was nearly 20 feet girth. So it was in the 120 year age range.
And that fickle bitch mother nature took it from me...
It took a long ass time to clean up the mess... 2+yrs.
Florida's oldest standing live oak is The Cellon Tree. About 30-40 minute drive southeast of where mine was... See it at this link.
http://www.flickr.com/photos/floridahikes/sets/72157624428892773
HOLY SHIT! The only other tree I've seen as cool as this was the Octopus Tree on the Oregon coast. These trees got to be several hundred years old. If the Redwoods are 2000 years old trees I don't see why we can't have Oak trees that live longer than we think.