Proceedings of the 12th International INQUA meeting on paleoseismology, active tectonic and archaeoseismology

434 PATA Days 2024 valleys), we identify seven primary structural segments. The most prominent of these are the Karlsruhe and Freiburg segments, which have the potential to generate earthquakes with magnitudes around 7.5 ± 0.5, based on empirical scaling relationships. Given its tectonic expression in the landscape and the thickness of the Late Tertiary- Pleistocene deposits, the Odenwald segment may currently be an active segment, despite showing very low historical and instrumental seismicity. Furthermore, we evaluate the long-term slip rate at a key study site located in the center of the Karlsruhe segment, using an offset beheaded stream channel and cosmogenic nuclide dating. We estimate a slip rate of 0.2 ± 0.06 mm/yr for the past 135 ± 10 kyrs. This study presents the first comprehensive fault segmentation model for the eastern RGBF, providing new insights into active tectonics and establishing a foundation for exploring plausible earthquake rupture scenarios in the URG. In our study sites in the Lower Rhine Graben (LRG), we found surface rupturing earthquakes providing evidence of Late Pleistocene and Holocene tectonic activity with M >6 and, hence, we contribute significantly to the completeness of the earthquake history. Identifying source characteristics for future seismic events strongly and intrinsically relies on past earthquakes, recurrence periods of those and magnitudes. This may help to more accurately reflect the hazard in “active intraplate regions.” A C K N O W L E D G M E N T S We thank DFG (German Science Foundation), IRSN and RWTH AachenUniversity for financial support. R E F E R E N C E S Grützner, C., Fischer, P., Reicherter, K., (2016). Holocene surface ruptures of the Rurrand Fault, Germany – insights from paleoseismology, remote sensing and shallow geophysics. Geophysical Journal International 2016 204 (3): 1662- 1677; doi: 10.1093/gji/ggv558 Pena-Castellnou, S., Hürtgen, J., Baize, S., Preusser, F., Müller, D., Jomard, H., Cushing E.M., Rockwell, T.K., Seitz, G., Cinti, F.R., Ritter, J., Reicherter, K., (2023). Surface rupturing earthquakes in the 1 eastern Rhine Graben Boundary Fault (Germany). Tectonophysics, 9/52023; https:// doi.org/10.1016/j.tecto. 2023. 230114 Pena-Castellnou, S., Hürtgen, J., Baize, S., Jomard, H., Cushing, M.E., Abbas, W., Reicherter, K. (2024, submitted). Active faulting of the southern segment of the Rhine River Fault, southern Germany: geomorphological and paleoseismological evidence. Quat. Int. Ritz, J.F., Baize, S., Audin, L., Authemayou, C., Graveleau, F., Kaub, C., Lacan, P., Leclerc, F., Larroque, C., Manchuel, K., Mugnier, J.L., Ortuño, M., Rizza, M., Vassallo, R., Antoine, P., Arroucau, P., Billant, J., Bollinger, L., Ferry, M., Fillon, C., Geoffroy, L., Jomard, H., Le Roy, P., Locht, J.-L., Migeon, S., Perrin, C., Perrot, J., Ratziv, G., Reicherter, K., Soubigou, O., Vergniault, C., Viaplana-Muzas, M., van der Woerd, J. New perspectives in studying active faults in metropolitan France: the “Active faults France” (FACT/ATS) research axis from the Resif-Epos consortium. Comptes Rendus. Géoscience, Volume 353 (2021), no. S1, 381- 412.