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

markers indicate ongoing activity, extending along the main fault for ~5 to ~15 km. The fault slip and the trace length suggest up to Mw ~7.5 seismic hazard, comparable to the San Ramón Fault, with implications for nearby cities. Additionally, the location of the knickpoints suggests the activity of faults east of the CBF's main fault, and clusters of knickpoints may be associated with deformation episodes in specific segments of the CBF. Further research may provide insight into neotectonics and crustal seismic hazards in the Central Andes. A C K N O W L E D G M E N T S This study was mainly supported by the FONDECYT Project 1200871 (L. Pinto). Fig. 5: 3D sketch with a SE view of the CBF’s main fault and alluvial fan deposits (Qal1 and Qal2) in the Llano Norte sector (see Fig. 3). The photographs show the geometric relationship of the old (Qal1) and young (Qal2) alluvial fan deposits around the CBF’s main fault. Field photos with the location of the OSL-dated samples are indicated. Image © 2023 Maxar Technologies from Google EarthTM.