Abstract A geological study of the settlement of Villasviejas del Tamuja was carried out with the aim of identifying the characteristics of its geological basement. Based on electrical tomography of the different profiles at different depths, correlating the results of the electrical sections with the geological information of the outcrops, it has been possible to establish the boundary between the archaeological and geological layer, and to describe the changes in the lithology in depth. The slate substrate with resistivity values of 200 Ω-m is at a depth between 1 and 3 m. From an approximate depth of 7 m, the resistivity increases due to the presence of a compositionally discordant unit with the slate substrate, which may be a granite intrusion. The progressive increase in resistivity values would be related to a contact aureole produced by the granitic intrusion with the development of hornfels that have been observed in the Tamuja river bed. This intrusion has also served to reveal evidence of mining in the area around the settlement. This study has contributed towards defining the geometry of the original slate substrate as a condition of its initial settlement and development, as well as providing in-depth geological knowledge by providing electrical tomography with a good description of lithological changes. With these data, the geological knowledge of the study area is covered both in surface and in depth, allowing for future research.

中文翻译：

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Villasviejas del Tamuja（西班牙卡塞雷斯）定居点的地质特征

摘要 对 Villasviejas del Tamuja 聚落进行了地质研究，目的是确定其地质基底的特征。基于不同深度不同剖面的电断层扫描，将电断面结果与露头地质信息相关联，建立考古层与地质层的分界线，描述岩性变化深入。电阻率为 200 Ω-m 的板岩基底位于 1 到 3 m 之间的深度。从大约 7 m 的深度开始，由于存在与板岩基底成分不一致的单元，电阻率会增加，这可能是花岗岩侵入体。电阻率值的逐渐增加将与花岗岩侵入产生的接触光环有关，并在塔穆贾河床观察到角岩的发展。这次入侵还有助于揭示定居点周围地区的采矿证据。这项研究有助于将原始板岩基底的几何形状定义为其初始沉降和发育的条件，并通过提供具有岩性变化的良好描述的电断层扫描来提供深入的地质知识。有了这些数据，研究区的地质知识就涵盖了地表和深度，便于未来的研究。这次入侵还有助于揭示定居点周围地区的采矿证据。这项研究有助于将原始板岩基底的几何形状定义为其初始沉降和发育的条件，并通过提供具有岩性变化的良好描述的电断层扫描来提供深入的地质知识。有了这些数据，研究区的地质知识就涵盖了地表和深度，便于未来的研究。这次入侵还有助于揭示定居点周围地区的采矿证据。这项研究有助于将原始板岩基底的几何形状定义为其初始沉降和发育的条件，并通过提供具有岩性变化的良好描述的电断层扫描来提供深入的地质知识。有了这些数据，研究区的地质知识就涵盖了地表和深度，便于未来的研究。