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

410 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 PATA Days 2024 K E Y W O R D S Coseismic Rupture; Earthquake; Surface Faulting; Tectonic Geomorphology (1) Istituto Nazionale di Geofisica e Vulcanologia (INGV-Italy); (2) Disaster and Emergency Management Authority of Türkiye (AFAD - Türkiye) (3) National Laboratory of Energy and Geology (LNEG – Portugal) (4) Consiglio Nazionale delle Ricerche - Istituto di Geologia Ambientale e Geoingegneria (CNR/IGAG-Italy) (5) Institut de Radioprotection et de Sûreté Nucléaire (IRSN–France) (6) Consiglio Nazionale delle Ricerche-Istituto di Geoscienze e Georisorse (CNR/IGG–Italy) (7) Servizio Geologico d’Italia-Istituto Superiore per la Protezione e la Ricerca Ambientale (ISPRA–Italy) (8) Centro InterRUniversitario per l’Analisi Sismo Tettonica tridimensionale con applicazioni territoriali (CRUST- Italy) *Email: stefano.pucci@ingv.it S. Pucci (1) K. Kuterdem (2) B. M. Tekin (2) C. Erkmen (2) T. S. Köksal (2) R. Azzaro (1) R. Nappi (1) R. Nave (1) R. Ressurreição (3) E. Peronace (4) C. Varone (4) L. Schiliro (4) S. Baize (5) L. Piccardi (6) A. M. Blumetti (7) P. Di Manna (7) V. Comerci (7) F. Ferrarini (8) S. Bello (8,4) M. Caciagli (1) R. Civico (1) P. M. De Martini (1) O. Tatar (2) DOCUMENTING THE SURFACE RUPTURE OF 06 FEBRUARY 2023 ELBISTAN (KAHRAMANMARAŞ) EARTHQUAKE (TÜRKIYE): THE EUROPEAN EARTHQUAKE GEOLOGY TASK FORCE (EUQUAGE) A B S T R A C T The European Earthquake Geology Task Force (EuQuaGe), a volunteer organization of European Earth scientists for coordinated, rapid, effective, and detailed field observations of geological co-seismic effects, performed its first survey collecting data on the ruptures caused by the Mw 7.6 Elbistan (Kahramanmaraş) Earthquake, the second mainshock occurred on 06 February 2023, coordinated by the Turkish Disaster and Emergency Management Authority (AFAD). The fieldwork, supported by airborne photogrammetry, allowed reconstructing the deformational pattern and high-resolution analytical models of the coseismic mole-track along ~20 km of the fault rupture, out of the 130 km-long Çardak Fault. Most of the investigated key areas presented left-lateral transpressional kinematics, with displacements up to 7.5 m, and mole-track’s pattern consisting of right-lateral en-echelon synthetic Riedel shears and left-lateral thrusts that formpull-apart basins and push-up ridges, respectively, up to 10 m long. The outcome contributes to the validation and building of the slip distribution curve of the 06 February 2023, Mw 7.6 Elbistan Earthquake. I N T R O D U C T I O N The comprehensive identification, characterization, and mapping of both primary (surface faulting) and secondary (liquefaction, landslide, hydrological anomalies, subsidence, etc.) surficial coseismic geological effects produced by strong