Published: 2024-10-08
Authors: Djerić, N., Jach, R., Goričan, Š., Reháková, D., Uchman, A., Gawlick, H-J., Schlög, J. & Stojadinović, U.
Abstract
The Jurassic to Early Cretaceous depositional history of the Carpatho-Balkanides reflects the graben (Early Jurassic) to passive continental margin (Middle Jurassic to Late Cretaceous) evolution of the Alpine Atlantic. As there is still no consensus about the Jurassic–Cretaceous palaeogeographic position of the Carpatho-Balkanides on the northern edge of the Moesian unit (Europe or wider Adria) a detailed knowledge of the passive continental margin depositional history is crucial to solving such open questions. Whereas the Early Jurassic graben infilling (Gresten Facies in a wider sense) is palaeogeographically only diagnostic to decide if units derive from the western or eastern Alpine Atlantic, the Middle Jurassic to Upper Cretaceous sedimentary successions differ in their overall lithology, sedimentological evolution, microfacies and geochemical characteristics on both the northern and southern margins of this oceanic domain but have only been studied in an overall manner up to now. Modern biostratigraphic age dating, sedimentological or geochemical studies are missing. Jurassic–Lower Cretaceous deposits along the valley of the Danube River in Serbia have been studied. The new biostratigraphic and microfacies results from the Middle–Upper Jurassic sedimentary rocks of the three successions are complemented by the obtained geochemical data. Detailed biostratigraphic analyses of radiolarians, calpionellids, dinoflagellates, and ammonites shed light on the paleoenvironmental and paleogeographic changes of the open marine environments in the Serbian part of the Carpatho-Balkanides, during Middle Jurassic–Early Cretaceous times. These successions indicate a typical horst-and-graben topography, well known from other domains of the Alpine Atlantic, formed during the continental break-up around the Early/Middle Jurassic boundary. Sedimentary successions deposited in deeper basins or in a horst position can be distinguished. The topographic difference was apparently diminished by the Early Cretaceous, when Maiolica type limestone above radiolarites and above condensed Rosso-Ammonitico-type limestone became ubiquitous. This depositional history resembles sedimentary successions from the northern units of the Eastern Alps or Western Carpathians. The successions studied are also closely similar to those of the Southern Alps, but the underlying rocks are different. The pre-Toarcian deposits in the study area are quartz sandstones and conglomerates (Gresten facies), whereas the coeval deposits of the Southern Alps are platform to deeper-water carbonates.
The Jurassic to Early Cretaceous depositional history of the Carpatho-Balkanides reflects the graben (Early Jurassic) to passive continental margin (Middle Jurassic to Late Cretaceous) evolution of the Alpine Atlantic. As there is still no consensus about the Jurassic–Cretaceous palaeogeographic position of the Carpatho-Balkanides on the northern edge of the Moesian unit (Europe or wider Adria) a detailed knowledge of the passive continental margin depositional history is crucial to solving such open questions. Whereas the Early Jurassic graben infilling (Gresten Facies in a wider sense) is palaeogeographically only diagnostic to decide if units derive from the western or eastern Alpine Atlantic, the Middle Jurassic to Upper Cretaceous sedimentary successions differ in their overall lithology, sedimentological evolution, microfacies and geochemical characteristics on both the northern and southern margins of this oceanic domain but have only been studied in an overall manner up to now. Modern biostratigraphic age dating, sedimentological or geochemical studies are missing. Jurassic–Lower Cretaceous deposits along the valley of the Danube River in Serbia have been studied. The new biostratigraphic and microfacies results from the Middle–Upper Jurassic sedimentary rocks of the three successions are complemented by the obtained geochemical data. Detailed biostratigraphic analyses of radiolarians, calpionellids, dinoflagellates, and ammonites shed light on the paleoenvironmental and paleogeographic changes of the open marine environments in the Serbian part of the Carpatho-Balkanides, during Middle Jurassic–Early Cretaceous times. These successions indicate a typical horst-and-graben topography, well known from other domains of the Alpine Atlantic, formed during the continental break-up around the Early/Middle Jurassic boundary. Sedimentary successions deposited in deeper basins or in a horst position can be distinguished. The topographic difference was apparently diminished by the Early Cretaceous, when Maiolica type limestone above radiolarites and above condensed Rosso-Ammonitico-type limestone became ubiquitous. This depositional history resembles sedimentary successions from the northern units of the Eastern Alps or Western Carpathians. The successions studied are also closely similar to those of the Southern Alps, but the underlying rocks are different. The pre-Toarcian deposits in the study area are quartz sandstones and conglomerates (Gresten facies), whereas the coeval deposits of the Southern Alps are platform to deeper-water carbonates.
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Published: 2024-10-06
Authors: Šarić, K., Prelević, D., Marjanović, M., Stojadinović, U. & Simić, V.
Abstract
The progress of a society is most closely related to the synergy of science and higher education, which must be continuously developed and complemented. Bearing in mind that educational systems change slowly, because they are molded into curricula and accreditation cycles, it is extremely important to find a way for new knowledge derived from cutting edge scientific endeavors to flow into education streams without any obstacle. One example of the synergy of education and science is the cooperation of the educational CEEPUS network CIII-RS-0038: "Earth-Science Studies in Central and South-Eastern Europe (EURO Geo-Sci)" with the scientific projects RECON TETHYS, DEMONITOR, TMCmod and REASONING, all implemented at the University of Belgrade - Faculty of Mining and Geology (UB-FMG). A diversity of geoscientific topics of the mentioned projects guarantees the efficient incorporation of a wide spectra of different geological disciplines into EURO GeoSci activities. Keywords: CIII-RS-0038, Recon Tethys, DEMONITOR, TMCmod, REASONING
The progress of a society is most closely related to the synergy of science and higher education, which must be continuously developed and complemented. Bearing in mind that educational systems change slowly, because they are molded into curricula and accreditation cycles, it is extremely important to find a way for new knowledge derived from cutting edge scientific endeavors to flow into education streams without any obstacle. One example of the synergy of education and science is the cooperation of the educational CEEPUS network CIII-RS-0038: "Earth-Science Studies in Central and South-Eastern Europe (EURO Geo-Sci)" with the scientific projects RECON TETHYS, DEMONITOR, TMCmod and REASONING, all implemented at the University of Belgrade - Faculty of Mining and Geology (UB-FMG). A diversity of geoscientific topics of the mentioned projects guarantees the efficient incorporation of a wide spectra of different geological disciplines into EURO GeoSci activities. Keywords: CIII-RS-0038, Recon Tethys, DEMONITOR, TMCmod, REASONING
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Published: 2024-10-06
Authors: Kostić, B., Srećković-Batoćanin, D., Stefanović, J., Krstekanić, N. & Stojadinović, U.
Abstract
The Timok magmatic complex (TMC) is Serbian segment of the Late Cretaceous Apuseni-Banat-Timok-Srednogorie magmatic belt, which was formed due to subduction of the Neotethys oceanic lithosphere beneath the Carpatho-Balkanides of south-eastern Europe. The back-arc basin hosting the TMC and associated sedimentary sequences was formed on the Getic tectonic unit of the Dacia mega-unit with European continental affinity. The interplay of sedimentary and magmatic processes in the TMC basin is still not fully understood. The aim of this study is to provide new insights into the coupled magmatism and sedimentation during the evolution of the TMC. Keywords: TMC basin, volcaniclastics, sedimentation
The Timok magmatic complex (TMC) is Serbian segment of the Late Cretaceous Apuseni-Banat-Timok-Srednogorie magmatic belt, which was formed due to subduction of the Neotethys oceanic lithosphere beneath the Carpatho-Balkanides of south-eastern Europe. The back-arc basin hosting the TMC and associated sedimentary sequences was formed on the Getic tectonic unit of the Dacia mega-unit with European continental affinity. The interplay of sedimentary and magmatic processes in the TMC basin is still not fully understood. The aim of this study is to provide new insights into the coupled magmatism and sedimentation during the evolution of the TMC. Keywords: TMC basin, volcaniclastics, sedimentation
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Published: 2024-08-30
Authors: Stojadinovic, U., Pomella, H., Krstekanić, N., Kostić, B., Maleš, M., Randjelovic, N. & Radonjić, M.
Abstract
In this study, we combined low-t thermochronology with outcrop- to micro-scale kinematic and petrological observations in the metamorphic basement of the Juhor Mts. in Central Serbia. The Juhor Mts. comprise northern parts of the Europe-derived Serbo-Macedonian Unit, at the transition towards the Adria-derived tectonic units of the Internal Dinarides. The Late Paleozoic Variscan orogeny resulted in the medium-grade greenschist to amphibolite facies metamorphism in the core of the mountains, as inferred from our thin section-scale observations. During the subsequent Alpine orogeny, the tectonic setting of the entire Europe-Adria transitional area was strongly influenced by the geodynamic evolution of the intervening Neotethyan Vardar Ocean. The last recorded thermal overprint in the northern segments of the Serbo-Macedonian metamorphics occurred in the latest Jurassic due to their burial during the obduction of the Eastern Vardar ophiolites over the European continental margin. According to our thermochronological and field structural data, the exhumation of the Juhor Mts. metamorphic basement occurred during two separate phases of extensional deformations. During the Late Cretaceous extension, the Serbo-Macedonian metamorphics were exhumed for ~3 to 6 km along a ductile Morava shear zone, and later structurally juxtaposed against the low-grade metamorphics of the adjacent Supragetic Unit of the Serbian Carpathians. The latest phase of ~1 to 2,5 km tectonic exhumation and uplift in the Miocene took place along the brittle normal faults that accommodated the opening of the Morava Valley Corridor, which forms the southern prolongation of the Pannonian Basin. It is plausible, therefore, that these Miocene normal faults are reactivated segments of thrusts inherited from the preceding Paleogene phase of the Adria-Europe collision. Keywords: Northern Serbo-Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations.
In this study, we combined low-t thermochronology with outcrop- to micro-scale kinematic and petrological observations in the metamorphic basement of the Juhor Mts. in Central Serbia. The Juhor Mts. comprise northern parts of the Europe-derived Serbo-Macedonian Unit, at the transition towards the Adria-derived tectonic units of the Internal Dinarides. The Late Paleozoic Variscan orogeny resulted in the medium-grade greenschist to amphibolite facies metamorphism in the core of the mountains, as inferred from our thin section-scale observations. During the subsequent Alpine orogeny, the tectonic setting of the entire Europe-Adria transitional area was strongly influenced by the geodynamic evolution of the intervening Neotethyan Vardar Ocean. The last recorded thermal overprint in the northern segments of the Serbo-Macedonian metamorphics occurred in the latest Jurassic due to their burial during the obduction of the Eastern Vardar ophiolites over the European continental margin. According to our thermochronological and field structural data, the exhumation of the Juhor Mts. metamorphic basement occurred during two separate phases of extensional deformations. During the Late Cretaceous extension, the Serbo-Macedonian metamorphics were exhumed for ~3 to 6 km along a ductile Morava shear zone, and later structurally juxtaposed against the low-grade metamorphics of the adjacent Supragetic Unit of the Serbian Carpathians. The latest phase of ~1 to 2,5 km tectonic exhumation and uplift in the Miocene took place along the brittle normal faults that accommodated the opening of the Morava Valley Corridor, which forms the southern prolongation of the Pannonian Basin. It is plausible, therefore, that these Miocene normal faults are reactivated segments of thrusts inherited from the preceding Paleogene phase of the Adria-Europe collision. Keywords: Northern Serbo-Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformations.
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Published: 2024-04-25
Authors: Stojadinović, U., Toljić, M., Trivić, B., Pantović, R., Srećković-Batoćanin, D., Krstekanić, N., Kostić, B., Velojić, M., Stefanović, J., Ranđelović, N. & Maleš, M.
Abstract
Among the many examples observed worldwide, the Timok Magmatic Complex (TMC) basin of the Serbian Carpathians represents an excellent area for a process-oriented study on the interplay between tectonics, sedimentation, and magmatism in continental back-arc basins above evolving subducted slabs. The TMC is a segment of the larger Late Cretaceous Apuseni-Banat-Timok-Srednogorie (ABTS) magmatic belt, formed in response to the subduction of the Mesozoic Neotethys oceanic lithosphere beneath the Carpatho-Balkanides of south-eastern Europe. However, despite many qualitative studies, the quantitative link between the subducted slab's mechanics and the overlying basins' evolution is less understood. Within the scope of the newly funded TMCmod project, supported by the Science Fund of the Republic of Serbia (GRANT No TF C1389-YF/PROJECT No 7461), coupled field and laboratory kinematic and petrological investigations will be focused on creating a conceptual definition of the TMC geodynamic evolution, by combining near-surface observations with the known evolution of the subduction system. This definition will be subsequently validated through analogue modelling and integrated into a coherent geodynamic model of tectonic switching in basins driven by the evolution of subducted slabs. The new geodynamic model coupling the TMC basin with its Neotethys subduction driver will quantitatively advance the strategy of prospecting and exploration of world-class porphyry copper-gold deposits, which have been actively exploited in this region for more than a century. Furthermore, reconstructed regional kinematic evolution will improve seismic hazard assessment during industrial and societal infrastructure planning and construction.
Among the many examples observed worldwide, the Timok Magmatic Complex (TMC) basin of the Serbian Carpathians represents an excellent area for a process-oriented study on the interplay between tectonics, sedimentation, and magmatism in continental back-arc basins above evolving subducted slabs. The TMC is a segment of the larger Late Cretaceous Apuseni-Banat-Timok-Srednogorie (ABTS) magmatic belt, formed in response to the subduction of the Mesozoic Neotethys oceanic lithosphere beneath the Carpatho-Balkanides of south-eastern Europe. However, despite many qualitative studies, the quantitative link between the subducted slab's mechanics and the overlying basins' evolution is less understood. Within the scope of the newly funded TMCmod project, supported by the Science Fund of the Republic of Serbia (GRANT No TF C1389-YF/PROJECT No 7461), coupled field and laboratory kinematic and petrological investigations will be focused on creating a conceptual definition of the TMC geodynamic evolution, by combining near-surface observations with the known evolution of the subduction system. This definition will be subsequently validated through analogue modelling and integrated into a coherent geodynamic model of tectonic switching in basins driven by the evolution of subducted slabs. The new geodynamic model coupling the TMC basin with its Neotethys subduction driver will quantitatively advance the strategy of prospecting and exploration of world-class porphyry copper-gold deposits, which have been actively exploited in this region for more than a century. Furthermore, reconstructed regional kinematic evolution will improve seismic hazard assessment during industrial and societal infrastructure planning and construction.
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Published: 2024-04-24
Authors: Stojadinović, U., Toljić, M., Trivić, B., Pantović, R., Srećković-Batoćanin, D., Krstekanić, N., Kostić, B., Velojić, M., Stefanović, J., Ranđelović, N. & Maleš, M.
Abstract
Volcano-sedimentary basins located in the orogenic hinterland area overlying subducted slabs are observed worldwide to be driven by the switching tectonic regimes induced by the changing mechanics of the slab. Despite many qualitative studies, the quantitative link between the subducted slab’s mechanics and the overlying basins’ evolution is less understood. Among the many examples observed worldwide, the Timok Magmatic Complex (TMC) in Serbia represents an optimal natural laboratory due to the complex tectonic setting during the various stages of the Middle Jurassic-Paleogene evolution of the subduction system. The TMC is a segment of the larger Late Cretaceous Apuseni-Banat-Timok-Srednogorie (ABTS) magmatic belt, formed in response to the evolution of the subducted Mesozoic Neotethys oceanic slab beneath the Carpatho-Balkanides of south-eastern Europe. The TMC basin, with the associated intrusive and extrusive magmatics and volcano-sedimentary deposits, represents an excellent area for a process-oriented study on the interplay between tectonics, sedimentation, and magmatism in the basins above evolving subducted slabs. Within the scope of the newly funded TMCmod project, coupled field and laboratory kinematic and petrological investigations will be focused on creating a conceptual definition of the TMC geodynamic evolution, by combining near-surface observations with the known evolution of the subduction system. This definition will be subsequently validated through analogue modelling and integrated into a coherent geodynamic model of tectonic switching in basins driven by the evolution of subducted slabs. The new model of the TMC basin’s geodynamic evolution will quantitatively advance the strategy of prospecting and exploration of world-class porphyry copper- gold deposits, which have been actively exploited in this region for more than a century. Furthermore, reconstructed regional kinematic evolution will improve seismic hazard assessment during industrial and societal infrastructure planning and construction. Keywords: Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling
Volcano-sedimentary basins located in the orogenic hinterland area overlying subducted slabs are observed worldwide to be driven by the switching tectonic regimes induced by the changing mechanics of the slab. Despite many qualitative studies, the quantitative link between the subducted slab’s mechanics and the overlying basins’ evolution is less understood. Among the many examples observed worldwide, the Timok Magmatic Complex (TMC) in Serbia represents an optimal natural laboratory due to the complex tectonic setting during the various stages of the Middle Jurassic-Paleogene evolution of the subduction system. The TMC is a segment of the larger Late Cretaceous Apuseni-Banat-Timok-Srednogorie (ABTS) magmatic belt, formed in response to the evolution of the subducted Mesozoic Neotethys oceanic slab beneath the Carpatho-Balkanides of south-eastern Europe. The TMC basin, with the associated intrusive and extrusive magmatics and volcano-sedimentary deposits, represents an excellent area for a process-oriented study on the interplay between tectonics, sedimentation, and magmatism in the basins above evolving subducted slabs. Within the scope of the newly funded TMCmod project, coupled field and laboratory kinematic and petrological investigations will be focused on creating a conceptual definition of the TMC geodynamic evolution, by combining near-surface observations with the known evolution of the subduction system. This definition will be subsequently validated through analogue modelling and integrated into a coherent geodynamic model of tectonic switching in basins driven by the evolution of subducted slabs. The new model of the TMC basin’s geodynamic evolution will quantitatively advance the strategy of prospecting and exploration of world-class porphyry copper- gold deposits, which have been actively exploited in this region for more than a century. Furthermore, reconstructed regional kinematic evolution will improve seismic hazard assessment during industrial and societal infrastructure planning and construction. Keywords: Timok Magmatic Complex, Neotethys subduction, basin geodynamics, analogue modelling
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