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

36 PATA Days 2024 1 2 T H I N T E R N AT I O N A L I N Q U A M E E T I N G O N PA L E O S E I S M O L O G Y , A C T I V E T E C T O N I C S A N D A R C H A E O S E I S M O L O G Y ( PATA ) , O C T O B E R 6 T H - 1 1 T H , 2 0 2 4 , L O S A N D E S , C H I L E K E Y W O R D S LiDAR, SfM, Active Faults, DTM, Mexico. (1) Posgrado en Geografía, Instituto de Geografía, Universidad Nacional Autónoma de México, Cd. De México, México. (2) Instituto de Geografía, Lab. de Tsunamis y Paleosismología, Universidad Nacional Autónoma de México, Cd. De México, México. *Email: ferarenas@ciencias.unam.mx / tramirez@geografia.unam.mx Luisa Fernanda Arenas Medina (1) María Teresa Ramírez Herrera (2) APPLICATION OF LIDAR AND SFM TECHNIQUES IN THE MAPPING OF POTENTIALLY ACTIVE FAULTS IN GUERRERO, MEXICO A B S T R A C T The South Pacific coast is the most important tectonic region of Mexico because it is located within the Cocos-North America subduction zone. The relative movement between both plates is slightly oblique, which produces the displacement of the forearc zone, from faults that accommodate part of the lateral component, which has been verified with GPS measurements. In this study we implement two remote sensing techniques: LiDAR and SfM, for the identification of geomorphological features as a first step for the identification of potentially active faults subparallel to the subduction zone. I N T R O D U C T I O N InMexico, the South Pacific coast is themost important tectonic region of the country because it is located within the Cocos-North America subduction zone. Research on the tectonic evolution of southern Mexico indicates that this region has a very complex tectonic history, where stress regimes began ~ 22million years ago, from the breakup of the Farallon plate into the Cocos and Nazca (Wortel &Cloetingh, 1981). Currently, the relative movement of the Cocos-North America presents an obliquity angle of 12° with respect to the trench, which produces displacement of the forearc zone through faults that accommodate part of the lateral component movement with approximately 8 mm/yr (Lowry et al., 2006). Gaidzik et al. (2017) have carried out geomorphic, structural and kinematic analyzes of faults in the region, which suggest that faults subparallel to the subduction zone show evidence of activity (Figure 1).