20.500.12556/DiRROS-30493 Cave system evolution in dedolomite (central Slovenia) The Mravljetovo brezno v Gošarjevih rupah (MBGR) cave system in central Slovenia provides key insights into the role of dedolomitization in speleogenesis within mixed carbonate–siliciclastic successions. Detailed geomorphological mapping, structural analysis, LiDAR-based morphometry, sedimentology, and Usingle bondTh and OSL geochronology were integrated to reconstruct cave and landscape evolution. Dedolomitization acted as an early-stage preconditioning process, enhancing porosity, permeability, and mechanical weakness along bedding planes and fractures, thereby guiding initial conduit development. Cave passages are strongly aligned with Dinaric-oriented fault systems, indicating structural control predating Miocene tectonic reactivation. Morphological features such as ceiling channels, cupolas, rising channels, and pendants reflect a complex interplay between structurally guided phreatic inception and later epiphreatic to vadose modification. Usingle bondTh ages up to ~380 ka and OSL-dated sediments at ~87 ka constrains major phases of vadose evolution to at least the Middle Pleistocene, while Holocene speleothems record renewed calcite deposition under stabilized conditions. Progressive uplift and valley incision drove long-term groundwater-level lowering, transitioning the system from phreatic to dominantly vadose conditions. Present morphology is further modified by condensation corrosion linked to active cave ventilation. The MBGR cave demonstrates how dedolomitization can fundamentally influence speleogenetic pathways and highlights caves as valuable archives of tectonic, climatic, and geomorphic evolution in prealpine karst settings. speleogenesis geomorphology cave sediments geochronology true false true Angleški jezik Ni določen © 2026 The Authors Neznano 2026-06-26 18:23:20 2026-06-26 18:23:20 2026-06-27 03:52:18 0000-00-00 00:00:00 2026 0 0 19 str. [article no.] 110399 2. jun. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2026-06-02 551.442:551.3.051(497.4) 0169-555X 10.1016/j.geomorph.2026.110399 282313731 https://www.sciencedirect.com/science/article/pii/S0169555X26002424?via%3Dihub 1 5a2d95d7-717b-11f1-b414-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=46336 1-s2.0-S0169555X26002424-main.pdf 1-s2.0-S0169555X26002424-main.pdf 1 4651A090237272EEE9B51DDA9143EDBE 78f961864e88d6d7c1cce808f90e5d2461baab5c17cb550b9b6ef271050d6d90 dd470d08-717b-11f1-b414-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=46337 Znanstvenoraziskovalni center Slovenske akademije znanosti in umetnosti 0 0 0