Seven new archeointensity data are obtained through the analysis of groups of pottery and kiln fragments from ceramic workshops unearthed in France, precisely dated from the High Middle Ages. The measurements are carried out using the Triaxe magnetometer, following a dedicated experimental protocol that takes into account the effects of anisotropy and cooling rate (CR) on thermoremanent magnetization acquisition. The new data are consistent with the evolution of intensity variations described by our previous data obtained in France and Northern Italy, which display between the 5th and 10th c. a pronounced camel-back shape. In particular, they provide supporting evidence of an intensity minimum that occurred around the transition between the 7th and 8th century. These data, combined with a selection of previously published results within a 700 km radius of Beaune and re-examined based on CR correction, formed the basis of new regional mean intensity variation curves based on two independent modeling approaches. The first algorithm developed by Thébault and Gallet (2010) based on bootstrapping and now irregularly spaced knots according to the data distribution gives rather smooth intensity variations, while the second approach proposed by Livermore et al. (2018) based on a transdimensional Bayesian technique shows more abrupt variations with sometimes stronger amplitudes. We explore the dating potential of these two variations curves, which have an unprecedented resolution, by studying two medieval pottery workshops. Six fragment groups (three per workshop) are analyzed using the Triaxe protocol, providing mean archeointensity values for each of the two sites. Two different procedures are used for their dating, either by comparing the intensity value to be dated with the reference intensity variation curves obtained from the two modeling techniques or by analyzing the marginal posterior probability distribution of the age values derived from the method of Livermore et al. (2018). For France, the two techniques yield very similar results. The archeointensity dating results combined with archeological arguments and radiocarbon data, make it possible to better constrain the age of the end of activity of the two workshops. Archeointensity investigation of displaced materials thus appears as an effective means to obtain original chronological constraints on the age of their production, paving the way for a wide range of complementary research on Medieval pottery.

通过对法国出土的陶瓷作坊的陶器和窑炉碎片进行分析，获得了七个新的考古强度数据，这些碎片精确地可追溯到中世纪盛期。测量是使用 Triaxe 磁力计进行的，遵循专用的实验协议，该协议考虑了各向异性和冷却速率 (CR) 对热剩磁化采集的影响。新数据与我们之前在法国和意大利北部获得的数据所描述的强度变化的演变一致，这些数据显示在 5 世纪到 10 世纪之间。明显的驼背形状。特别是，它们提供了在 7 世纪和 8 世纪之间发生的强度最小值的支持证据。这些数据，结合之前在博讷 700 公里半径范围内公布的结果，并根据 CR 校正重新检查，形成了基于两种独立建模方法的新区域平均强度变化曲线的基础。Thébault 和 Gallet (2010) 开发的第一种算法基于自举，现在根据数据分布不规则间隔的结提供了相当平滑的强度变化，而 Livermore 等人提出的第二种方法。(2018) 基于跨维贝叶斯技术显示出更突然的变化，有时幅度更大。我们通过研究两个中世纪陶艺作坊，探索这两种变化曲线的测年潜力，它们具有前所未有的分辨率。使用 Triaxe 方案分析了六个片段组（每个车间三个），为两个站点中的每一个提供平均考古强度值。两种不同的程序用于它们的测年，要么通过将要测年的强度值与从两种建模技术获得的参考强度变化曲线进行比较，要么通过分析从 Livermore 等人的方法得出的年龄值的边际后验概率分布. (2018)。对于法国来说，这两种技术产生了非常相似的结果。考古强度测年结果结合考古论证和放射性碳数据，可以更好地约束两个车间的活动结束年龄。因此，对置换材料的考古强度调查似乎是获得其生产年代原始时间限制的有效手段，