That last part is what irks the H-E-double hocky sticks out of me.
Also, the archaeologist(?) I was thinking of has a hyphenated last name and she was working along with U of AZ down in Mexico. I think her name was Steen or something. She caused quite a stir and a controversy with some dating she did in the 70's and I want to delve into it further. If any of that jogs your brain and you have a link send it. (I've read the articles on the ID/Creation sites and want to see more of why her methods were crucified) I'm sure there are some papers out there waiting for me to find them.
The archaeologist you are thinking of is Virginia Steen-Mcintyre. Try a google search.
I did a search and found this article: Hueyatlaco Site--"Extreme Dating Controversy".
Some of this does not sound right to me. The first archaeologist at the site, Cynthia Williams, is someone I knew some decades back. She struck me as entirely reliable.
Also, a site in the Americas would normally be dated using radiocarbon dating, and that has an upper limit of about 50,000 years. What method of dating produced dates several times this age? And why was that method used instead of the normal method?
There are a lot of questions I would have, but at least, from the clues you provided, I have found the name you were looking for and possibly the site. The rest is left as an exercise for the student! ;-)