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

488 PATA Days 2024 Surface rupture and paleoseismological record in the inner aysén fjord High-resolution bathymetric and seismic data from the inner Aysén Fjord reveal surface and subsurface submarine ruptures associated with the 2007 Mw 6.2 earthquake (Fig. 1). This earthquake, which affected the main branches of LOFS, is evidenced by deformed strata in seismic profiles, where the fault rupture reaches the surface (SL‐05 and SL‐06). Observations include escarpments up to 5 m high disrupting the PCB and affecting the seafloor beyond this unit. Longitudinal sags aligned with PCF faulted zone suggest significant seafloor deformation. This interpretation contrasts with Van Daele et al. (2013) and Lastras et al. (2013), who attributed these sags solely to the Punta Cola landslide impact. We argue that these Fig. 2: Time-dependent model for the fluctuation of the Patagonian Ice sheet between 45° and 48° S (Hubbard et al., 2005). It shows an LGM configuration compatible with the available records until that time. Average ice thickness ~1,130 m. Red dots correspond to our radiocarbon ages. Yellow dots correspond to correlated drifts (Douglass et al., 2006; Hein et al., 2010; Smedley et al., 2016), and green dots to age estimations for the moraines of the respective local area (Fernández et al., 2012; Villalobos et al., 2020). Fig. 2: Time-dependent model for the fluctuation of the Patagonian Ice sheet between 45° and 48° S (Hubbard et al., 2005). It shows an LGM configuration compatible with the available records until that time. Average ice thickness ~1,130 m. Red dots correspond to our radiocarbon ages. Yellow d ts correspond to correlated drifts (Douglass et al., 2006; Hein et al., 2010; Smedley et al., 2016), and green dots to age estimations for the moraines of the respective local area (Fernández et al., 2012; Villalobos et al., 2020).