New Pre-clovis site from Florida?

[E.P. Grondine]

Hi Charlie, all -

Heard report of new pre-clovis site from Florida: isolated point on bedrock, of South American type (B or D mt DNA people, my guess) , knapping remains around. But they only have OCL date. Is this dating technique reliable?

E.P. Grondine
Man and Impact in the Americas

[AWSX]

Got a link?
You mentioned mtDNA haplogroups, do they have human remains?

Allan Shumaker

[Charlie Hatchett]

I wonder if that's OSL dating versus OCL dating? If so, that is the method being used to date the Gault and Buttermilk Creek Sites.

[E.P. Grondine]

Hi Charlie, Allan,

You know, since this is going to be published, I don't want to comment too much, as I am worried about fouling that up. Are my concerns justified?

No human remains. Also apparently a single pit for now, and no C14 dates, but that will probably change.

My guess is that "OCL" is the right term, but right now I can't remember if the "OSL" was a typo, or my memory.
The parts that I understood were Optical, and Luminescent, apparently on sand. Is it an accurate method, and how does it work?

[Charlie Hatchett]

Hi Charlie, Allan,

You know, since this is going to be published, I don't want to comment too much, as I am worried about fouling that up. Are my concerns justified?

No human remains. Also apparently a single pit for now, and no C14 dates, but that will probably change.

My guess is that "OCL" is the right term, but right now I can't remember if the "OSL" was a typo, or my memory.
The parts that I understood were Optical, and Luminescent, apparently on sand. Is it an accurate method, and how does it work?

Here's a quick primer on optically stimulated luminescence dating (OSL dating):

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

As I wrote above, the method is being used to date the Gault and Buttermilk Creek Sites. It's also been used to date the Cactus Hill preClovis strata.

I've heard pretty good things about the method, Ed.