That Roman pottery dating method everyone swears by let me down hard
I was working on a site near Bath last month and sent off some pottery samples for thermoluminescence dating, the gold standard technique everyone uses. Three different labs came back with results that were off by over 200 years compared to the stratigraphy we had already mapped out. I double checked everything, the sampling, the paperwork, even drove the samples myself to avoid shipping issues. Turns out the clay source had a much higher uranium content than the calibration assumed, which throws the whole thing sideways. Now I'm stuck telling the local museum their timeline is probably wrong and they aren't happy about it. Has anyone else had TL dating give you garbage numbers when the geology didn't fit the textbook?