Magnetic susceptibility dataset from the early Givetian to early Frasnian in the La Thure section

Recent advances in radiometric dating result in significant improvements in the geological timescale and provide better insight into the timing of various processes and evolutions within the Earth's system. However, no radiometric ages are contained within the Givetian. Consequently, the absolute ages of the Givetian Stage boundaries, as well as the stage's duration, remain poorly constrained. As an alternative, the analysis of sedimentary cycles allows for the estimation of the duration of this stage. We examined the high-resolution magnetic susceptibility signals of four Givetian outcrops in the Givet area for a possible astronomical imprint, to fully understand the rates of evolutionary and environmental change. All four sections are firmly correlated and wavelet analyses of the magnetic susceptibility signals reveal the imprint of astronomical eccentricity forcing. […]

近期在放射性测年技术方面的进展显著提升了地质年代尺度的精确度，并为进一步揭示地球系统中各种过程和演化的时间序列提供了更为深刻的见解。然而，在吉维特阶（Givetian）中并未发现任何放射性年代数据。因此，吉维特阶边界的确切年代以及该阶的持续时长仍缺乏严格的约束。作为替代方案，对沉积周期的研究则有助于估算该阶的持续时间。本研究团队对吉维特地区四个吉维特阶露头的高分辨率磁化率信号进行了分析，旨在探寻可能的天体印迹，以全面理解演化和环境变化的速率。所有四个剖面均表现出稳定的关联性，磁化率信号的波形分析揭示了天体偏心率的强迫印迹。