creationist tried to tell me embrology doesn't support evolution.

[Statler Waldorf]

The age of the earth is confirmed by so many pieces of evidence that you would have to be a blinkered moron to still believe in a young earth if you have any science knowledge at all.

I have a great deal of scientific knowledge and I see no reason at all to believe the Earth is billions of years old, perhaps you can enlighten me.

http://en.wikipedia.org/wiki/Age_of_the_Earth

http://rationalwiki.org/wiki/Evidence_ag...t_creation

http://www.amnh.org/education/resources/...nolgy.html

You don’t think it’s a bit...well moronic to try and prove your position using user-generated wiki websites?

My favorite has to be zircon crystals that form deep in the earth mantle, then are raised by mountain forming, eroded down by weathering then by subduction at plate boundries taken back into the earth mantle where each time this happens leaving a new layer of zircon is added, like a very slow growing onion. Some of them have a lot of layers.

That’s interesting that Zircon crystals are one of your favorite lines of evidence, it’s one of mine too. Since the zircon dating method is based on the radiometric decay of Uranium, how do you know that the radiometric decay rate of Uranium has been uniform throughout Earth’s history?
I am sure, since you have made it quite clear that you are not a moron (and apparently I am a moron since I have both a scientific background and still believe in the Biblical age given for the Earth), that you are aware that a byproduct of Uranium decay is Helium. I am also sure that you are aware that Helium diffuses out of the Zircon crystals over time. Can you point me to a study that empirically measured the diffusion rate of Helium to be consistent with the supposed ages of the crystals? All the studies I can find that have measured this diffusion rate measure a diffusion rate consistent with a crystal of only 6,000 years old, not billions of years old. Apparently we have one decay rate suggesting the crystals are billions of years old, and a second empirically measurable decay rate (Helium diffusion) that suggests the crystals are 6,000 years old; forgive me, but that hardly seems to be conclusive evidence demonstrating that the Earth is billions of years old. Perhaps you have some better evidence you’d like to present? Thank you!