000161689 001__ 161689
000161689 005__ 20251017144556.0
000161689 0247_ $$2doi$$a10.1016/j.geomorph.2025.109859
000161689 0248_ $$2sideral$$a144357
000161689 037__ $$aART-2025-144357
000161689 041__ $$aeng
000161689 100__ $$0(orcid)0000-0002-5407-940X$$aGutiérrez, Francisco$$uUniversidad de Zaragoza
000161689 245__ $$aSurface karst geomorphology in the Jahani salt extrusion, Zagros Mountains, Iran
000161689 260__ $$c2025
000161689 5060_ $$aAccess copy available to the general public$$fUnrestricted
000161689 5203_ $$aThis work analyses the superlative salt karst developed on Jahani salt extrusion (ca. 70 km2, 900 m in local relief). This active diapir is expressed as a salt fountain comprising a summit dome above the feeding vent and laterally spreading salt glaciers (i.e., namakiers) moving at rates of the order of cm/yr. The salt extrusion hosts the first documented and mapped salt karst poljes, developed at the foot of the steep rock salt slopes of the summit dome by differential suballuvial dissolution and expansion by rim dissolution. A cartographic inventory of 6489 sinkholes has allowed to characterise morphometrically the differences between the juvenile and mature sinkhole landscapes developed in the proximal and distal sectors of a namakier, respectively. Sinkholes developed in the recently expelled salt at the proximal sector have an average length four times smaller (23 m versus 83 m) and a density three times higher (600 versus 200 sinkholes/km2), reflecting the variable impact of expansion and coalescence processes. The Firuzabad River has trimmed the northern namakier, generating a 6 km long and > 400 m high salt escarpment, likely the largest on Earth. The dynamics of the escarpment is governed by the antagonistic roles of salt flow and rapid erosion by fluvial undermining, rock falls and dissolutional removal of the rock salt debris, causing severe hydrochemical degradation of the river waters. Exceptional halite rimstones occur in a marginal stream largely fed by permanent brine springs.
000161689 536__ $$9info:eu-repo/grantAgreement/ES/AEI/PID2021-123189NB-I00
000161689 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es
000161689 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000161689 700__ $$aIlyati, Issa
000161689 700__ $$aZarei, Mehdi
000161689 7102_ $$12000$$2427$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Externa
000161689 773__ $$g485 (2025), 109859 [20 pp.]$$pGeomorphology$$tGEOMORPHOLOGY$$x0169-555X
000161689 8564_ $$s3864561$$uhttps://zaguan.unizar.es/record/161689/files/texto_completo.pdf$$yVersión publicada
000161689 8564_ $$s2560886$$uhttps://zaguan.unizar.es/record/161689/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000161689 909CO $$ooai:zaguan.unizar.es:161689$$particulos$$pdriver
000161689 951__ $$a2025-10-17-14:13:20
000161689 980__ $$aARTICLE