20.500.12556/DiRROS-22457 Late Cretaceous turbidite systems of southern Belgrade outskirts: constraints on the Santonian convergence onset, evidence from the Sava Suture Zone (Guberevac-Babe, northern Šumadija, Serbia) Zgornjekredni turbiditi južnega obrobja Beograda: podrobna opredelitev začetka santonijske konvergence, dokazi iz Savske šivne cone (Guberevac-Babe, severna Šumadija, Srbija) As ancient depositional systems associated with active continental margins, turbidites may provide crucial information on orogenic evolution. This paper offers new stratigraphic and structural data on one of the late Alpine turbidite systems of the Late Cretaceous age (Guberevac-Babe-Ropočevo area; Serbia). The two opposite yet juxtaposed tectonic systems were initially deposited within the Sava Suture Zone and East Vardar Zone, whereby the former experienced Upper Cretaceous contractional- and extensional-type deformations. The new biostratigraphic dating constrains the age of mapped compressional structures, which indicates their Santonian age. This deformed segment of the newly dated Santonian clastic-carbonate turbidite sequence near the Guberevac site exposes new important compressional structures. The folds, reverse faults, and tectonic stylolites are allocated several kilometers from the primary deformation (Bela Reka thrust fault), positioned within the crustal footwall of the overriding East Vardar Zone. The complexity of the geological processes in the Guberevac-Babe-Ropočevo area is further revealed by the previously mapped layering of Upper Cretaceous strata, exposed within the wider investigated area. Our combined field study provides a new statistical analysis of structural elements such as faults, folds, and bedding planes, adding to the depth of the understanding of the Sava Suture Zone. The observed contractional structures, mesoscopic folds, thrust faults, two-generation cleavage planes, as well as the produced statistical structures, are mostly imprinted into the out-of-deformation front or within the mixed clastic-carbonate turbidites of the Sava Suture Zone (Guberevac-Babe area). The composite study shows that the investigated footwall segment, represented by the deformed Sava Suture Zone turbidites, underwent tectonic shortening during Santonian (convergence onset). After the main crustal thickening event ceased, the Guberevac-Babe-Ropočevo suture segment was reactivated several times (post-orogenic extension). The investigated segment of the Neotethyan Vardar paleosuture experienced a total of four deformation stages spanning Late Cretaceous to Miocene times. These include the Late Oligocene reactivation and emplacement of the Glavčina-Parlozi Late Oligocene subvolcanic body and the slightly younger Stenička bara Miocene igneous system Turbiditi, kot sedimentacijski sistemi, vezani na aktivne robove celin, so turbiditi nosilci pomembnih podatkov o orogenem razvoju območja. V tem članku so predstavljeni novi stratigrafski in strukturni podatki o enem od alpskih turbiditnih sistemov iz časa pozne krede (območje Guberevac-Babe-Ropočevo; Srbija). Znotraj Savske šivne cone in Vzhodne Vardarske cone sta bili odloženi dve sinorogeni zaporedji, pri čemer je bilo prvo podvrženo poznokrednim kompresijskim in ekstenzijskim deformacijam. Glede na nove biostratigrafske podatke je do nastanka kompresijskih struktur prišlo v santoniju. V deformiranem delu santonijskega klastično-karbonatnega turbiditnega zaporedja v bližini Guberevaca so vidne nove pomembne kompresijske strukture. Gube, reverzni prelomi in tektonski stiloliti so vidni nekaj kilometrov stran od primarne deformacije (nariv Bela Reka), v talnini narinjene Vzhodne Vardarske cone. O kompleksnosti geoloških procesov na območju Guberevac-Babe-Ropočevo pričajo tudi plasti zgornjekrednih kamnin, ki so bile predhodno kartirane na širšem območju. V sklopu naše terenske študije smo izvedli statistično analizo strukturnih elementov, kot so prelomi, gube in plasti, kar prispeva k boljšemu razumevanju Savske šivne cone. Opazovane kompresijske strukture, kot so mezoskopske gube, narivi in klivažne ravnine dveh generacij, kot tudi pridobljeni statistični podatki o strukturah, se večinoma pojavljajo v prednarivnem čelu ali znotraj mešanih klastično-karbonatnih turbiditov Savske šivne cone (območje Guberevac-Babe). Celotna študija kaže, da je bil preiskovani segment talnine, ki ga predstavljajo deformirani turbiditi Savske šivne cone, izpostavljen tektonskemu krčenju v santoniju (začetek konvergence). Po koncu glavnega dogodka debeljenja skorje je bil šivni segment Guberevac-Babe-Ropočevo večkrat reaktiviran (postorogena ekstenzija). Preučevani segment neotetidine vardarske paleosuture je med pozno kredo in miocenom skupaj doživel štiri faze deformacij. Te vključujejo pozno-oligocensko reaktivacijo ter umestitev pozno-oligocenskega subvulkanskega telesa Glavčina-Parlozi in nekoliko mlajšega, miocenskega magmatskega sistema Stenička bara. Sava Suture Zone Upper Cretaceous turbidites folding and thrust faulting Guberevac-Babe-Ropočevo suture reactivation Savska šivna cona zgornjekredni turbiditi gubanje in narivanje Guberevac-Babe-Ropočevo reaktivacija stika true false true Angleški jezik Slovenski jezik Neznano 2025-05-21 09:06:33 2025-05-21 09:06:33 2025-10-24 03:51:19 0000-00-00 00:00:00 2024 0 0 str. 217-236 no. 2 vol. 67 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-12-16 551.1/.4 0016-7789 10.5474/geologija.2024.010 220220675 1899-Article_Text-12342574-1-10-20241217.pdf 1899-Article_Text-12342574-1-10-20241217.pdf 1 9F2694CF4D52937A3DA4159BD19C5DF6 4883b3495a544f88a868305d3073c4324932380b0fc09587d706b4496e0153b0 8975bb2e-3612-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=32448 Geološki zavod Slovenije Geologija 0 0 0