000162424 001__ 162424 000162424 005__ 20251017144608.0 000162424 0247_ $$2doi$$a10.1016/j.geomorph.2025.109955 000162424 0248_ $$2sideral$$a145036 000162424 037__ $$aART-2025-145036 000162424 041__ $$aeng 000162424 100__ $$0(orcid)0000-0002-5407-940X$$aGutiérrez, Francisco$$uUniversidad de Zaragoza 000162424 245__ $$aDiapiric and tectonic geomorphology of the river-damming Jahani salt extrusion associated with the strike-slip Kareh Bas Fault, including DInSAR displacement data (Zagros Mountains, Iran) 000162424 260__ $$c2025 000162424 5060_ $$aAccess copy available to the general public$$fUnrestricted 000162424 5203_ $$aThe Fars Arc of the Zagros Fold-and-Thrust Belt hosts the most remarkable examples of salt extrusions worldwide, within a context of rapid collision-related deformation and high seismic activity. Hormuz salt extrusions in the western Fars Arc form rows associated with >200 km long dextral strike-slip faults, which constitute major seismic sources. This work is focused on the Jahani salt fountain and the associated Kareh Bas Fault. The Kareh Bas Fault is interpreted as a supra-salt tear fault controlled by thickness variations in the Hormuz salt detachment and associated rows of precursor diapirs. The precursor Jahani diapir likely induced the segmentation of the S-propagating Kareh Bas Fault, generating a releasing stepover that facilitated salt emergence. OSL dating of +40 m terrace deposits of the Shur River deformed by the Kareh Bas Fault reveals that the fault sourced two paleoearthquakes before and around 14.7–13.8 ka, and indicates a long-term fluvial incision rates of 2.7–2.9 mm/yr. The emerged Jahani diapir (68 km2, 918 m in local relief) is a salt fountain comprising a protruding summit dome and laterally spreading salt glaciers (i.e., namakiers). The northern namakier has been trimmed by the Shur River, generating an exceptional salt escarpment 6 km long and >400 m high. Masses of disconnected Hormuz rocks on the opposite margin of the valley and paleolake deposits found upstream and dated by OSL at 28 ± 5 ka, indicate that the Shur River has experienced multiple damming episodes, likely during dry periods. This work documents for the first time the damming of a major drainage by a salt glacier and the creation of a lake. DInSAR data reveal an overall progressive displacement pattern in the Jahani salt fountain characterised by a rising summit dome (1–2 cm/yr) and laterally spreading namakiers with distally decreasing horizontal displacement rates (1–2 cm/yr) and some uplift in the frontal sectors. This general pattern is altered in the northern sector, where the debuttressed salt extrusion rapidly flows towards the deeply entrenched Shur valley at horizontal and vertical rates of around 10–15 cm/yr. The presented displacement data invalidate a previous work, that based on inadequate theodolite displacement measurements of the order of m/yr, suggested that the is one of the most vigorously rising salt extrusions on Earth. 000162424 536__ $$9info:eu-repo/grantAgreement/ES/AEI/PID2021-123189NB-I00$$9info:eu-repo/grantAgreement/ES/MECD/Salvador Madariaga-PRX22-00029 000162424 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es 000162424 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000162424 700__ $$aHaghighi, Mahmud Haghshenas 000162424 700__ $$aIlyati, Issa 000162424 700__ $$aMotagh, Mahdi 000162424 700__ $$adel Val, Miren 000162424 7102_ $$12000$$2427$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Externa 000162424 773__ $$g488 (2025), 109955 [23 pp.]$$pGeomorphology$$tGEOMORPHOLOGY$$x0169-555X 000162424 8564_ $$s2150532$$uhttps://zaguan.unizar.es/record/162424/files/texto_completo.pdf$$yVersión publicada 000162424 8564_ $$s2289420$$uhttps://zaguan.unizar.es/record/162424/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000162424 909CO $$ooai:zaguan.unizar.es:162424$$particulos$$pdriver 000162424 951__ $$a2025-10-17-14:16:07 000162424 980__ $$aARTICLE