In directional archaeomagnetic studies, it is rarely analysed whether the combustion structures display anisotropy of their thermoremanent magnetization (ATRM). It has been observed that, in specific cases like thin baked clays from the base of small hearths, archaeomagnetic directions can also be disturbed by the ATRM. We re-examine data from 56 combustion structures from Iberia and use them to analyse the ATRM effect on their archaeomagnetic directions. Flattening of inclinations up to 13^o has been found in highly anisotropic structures that can be adequately corrected by the ATRM tensors. We show how the lack of anisotropy corrections on directional values can dramatically deteriorate the ages obtained from archaeomagnetic dating, highlighting the importance of systematically analysing this property in future archaeomagnetic studies.

在定向古地磁研究中，很少分析燃烧结构是否显示其热剩磁 (ATRM) 的各向异性。已经观察到，在特定情况下，例如来自小炉床底部的薄烤粘土，ATRM 也会干扰古地磁方向。我们重新检查了来自伊比利亚的 56 个燃烧结构的数据，并使用它们来分析 ATRM 对其古地磁方向的影响。压平高达 13 ^o的倾角已经在高度各向异性的结构中发现，可以通过 ATRM 张量进行充分校正。我们展示了方向值缺乏各向异性校正如何显着恶化从古地磁测年中获得的年龄，突出了在未来的古地磁研究中系统分析这一特性的重要性。