[Virginia-American]

Fossil layers are dated by the ages of the fossils in them and visa versa (never mind the circular reasoning).

This is false. The relative ordering is determined by the fossils. The absolute dates depend on other observations

[DittoJed2]

That should have read strata layers. Geologists do do this. Strata determine the age of the fossil and fossils determine the age of the strata. Read some of Menton's work. I posted one article above. Here are some other links:
http://www.revelationwebsite.co.uk/index1/menton/creation.htm

http://www.getequipped.org/menton.htm

[goodseedhomeschool (returned)]

Yeah, the rock layers.

[js1138]

This is false. The relative ordering is determined by the fossils. The absolute dates depend on other observations.

Would it be rude to point out that if you have absolute dates you also have relative dates.

As Physicist points out, we have numerous method for dating; some absolute, some relative, all in agreement.