Archaeomagnetic Dating at Pueblo Grande

One hundred and seventy-four archaeomagnetic samples from burned features were collected at Pueblo Grande, a Hohokam site in Phoenix, Arizona. This large data set yields an excellent opportunity to evaluate the potential contribution of archaeomagnetism to solving chronometric problems. It allows a consideration (1) of different sampling schemes, (2) of the archaeomagnetic quality of samples that do and do not produce archaeomagnetic dates, (3) of samples that do not date according to archaeological expectations, and (4) an analysis of the factors that influence dating precision. Further, comparing 109 and 19 of the archaeomagnetic dates with associated ceramic and radiocarbon dates provides measures of the accuracy of archaeomagnetic dates.