Seismic hazard assessment and geochronology are closely linked disciplines. The quantity and quality of the geochronological data used for fault-source characterization is crucial in seismic hazard estimates, which may have significant socio-economic implications. The characterization of Quaternary faults in the central sector of the Iberian Chain (NE Spain) has traditionally been based on ages provided by a now closed commercial luminescence laboratory. In this work, we compare new geochronological data obtained by a multi-method dating approach from pediment and terraces (Electron Spin Resonance: ESR, Optically Stimulated Luminescence: OSL; U-series: U/Th) and short-transport colluvial facies (radiocarbon), with ages provided by the commercial luminescence lab from the same units. The thirteen new numerical ages from terraces and pediments associated with Quaternary faults are systematically 6–3 times older than the previous ones, strongly suggesting that they lead to significant overestimates of fault activity and seismic hazard in the region. These new ESR, OSL and U/Th ages and the lack of information about the methodology applied by the closed luminescence laboratory seriously question the reliability of the previous ages. It also highlights the need of revisiting the Quaternary and geomorphological studies carried out in Spain using non-reliable ages.

地震危险性评估和地质年代学是紧密联系的学科。用于断层源表征的年代学数据的数量和质量在地震灾害估计中至关重要，这可能会对社会经济产生重大影响。传统上，伊比利亚链中部（西班牙东北部）的第四纪断层的特征是根据现已关闭的商业发光实验室提供的年龄来确定的。在这项工作中，我们比较了通过多方法定年方法从山and和阶地（电子自旋共振：ESR，光激发发光：OSL； U系列：U / Th）和短传输的砂砾相（放射性碳）中获得的新的年代学数据。 ），并具有商业发光实验室提供的相同单位的年龄。与第四纪断层有关的阶地和山ped上的13个新的数字年龄系统地比以前的年龄大6到3倍，有力地表明，它们导致了该地区断层活动和地震灾害的严重高估。这些新的ESR，OSL和U / Th时代，以及有关封闭式发光实验室所采用的方法的信息的缺乏，严重质疑了以前时代的可靠性。它还强调有必要重新审视西班牙使用不可靠年龄的第四纪和地貌学。OSL和U / Th年龄以及封闭式发光实验室所采用的方法的信息不足，严重质疑了先前年龄的可靠性。它还强调有必要重新审视西班牙使用不可靠年龄的第四纪和地貌学。OSL和U / Th年龄以及封闭式发光实验室所采用的方法的信息不足，严重质疑了先前年龄的可靠性。它还强调有必要重新审视西班牙使用不可靠年龄的第四纪和地貌学。