BC, BCE, TL, cal BP?

[gregszybala]

For those of you confused like myself by what these mean and why they are used maybe this will help.
How do Archaeologists Count Backward into the Past?

https://www.thoughtco.com/bp-how-do-archaeologists-count-backward-170250?utm_source=facebook&utm_medium=social&utm_campaign=shareurlbuttons

[Scorpion68]

Interesting article there Greg. I knew some of that but the thermolumesence was a new one for me. I still hang my hat on BP without regard to adding for the 1950 start date. I guess if I were a scientist or professional archaeologist, I'd wanna be more precise but to me, what a couple thousand years when you're looking at hundreds of thousands.

[SDhunter]

Interesting Greg. Thanks