RE: The dates given by AOS for past events may actually disprove evolution entirely
October 6, 2013 at 8:15 am
The error bars come from the dating methods.
The layers of ground then show that the ones below are older than the ones above, provided there's no evidence of any geological activity which may suggest that those layers have been disturbed.
So, for the provided layers:
Tuff 8: 3.46 +- 0.12 Ma
Tuff 7: 3.56 +- 0.2 Ma
If, you, somehow, come to the conclusion that Tuff 8's age is closer to 3.46 + 0.12 = 3.58Ma, then Tuff 7 must be, at least, as old, 3.58Ma is included in the error for Tuff 7, so it's ok.
The layers of ground then show that the ones below are older than the ones above, provided there's no evidence of any geological activity which may suggest that those layers have been disturbed.
So, for the provided layers:
Tuff 8: 3.46 +- 0.12 Ma
Tuff 7: 3.56 +- 0.2 Ma
If, you, somehow, come to the conclusion that Tuff 8's age is closer to 3.46 + 0.12 = 3.58Ma, then Tuff 7 must be, at least, as old, 3.58Ma is included in the error for Tuff 7, so it's ok.
