Post-collisional mantle delamination in the Dinarides implied from staircases of Oligo-Miocene uplifted marine terraces
Abstract The Dinarides fold-thrust belt on the Balkan Peninsula resulted from convergence between the Adriatic and Eurasian plates since Mid-Jurassic times. Under the Dinarides, S-wave receiver functions, P-wave tomographic models, and shear-wave splitting data show anomalously thin lithosphere over...
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| Format: | Article |
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Nature Portfolio
2021-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-81561-5 |
| _version_ | 1818720911035990016 |
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| author | Philipp Balling Christoph Grützner Bruno Tomljenović Wim Spakman Kamil Ustaszewski |
| author_facet | Philipp Balling Christoph Grützner Bruno Tomljenović Wim Spakman Kamil Ustaszewski |
| author_sort | Philipp Balling |
| collection | DOAJ |
| description | Abstract The Dinarides fold-thrust belt on the Balkan Peninsula resulted from convergence between the Adriatic and Eurasian plates since Mid-Jurassic times. Under the Dinarides, S-wave receiver functions, P-wave tomographic models, and shear-wave splitting data show anomalously thin lithosphere overlying a short down-flexed slab geometry. This geometry suggests a delamination of Adriatic lithosphere. Here, we link the evolution of this continental convergence system to hitherto unreported sets of extensively uplifted Oligocene–Miocene (28–17 Ma) marine terraces preserved at elevations of up to 600 m along the Dinaric coastal range. River incision on either side of the Mediterranean-Black Sea drainage divide is comparable to the amounts of terrace uplift. The preservation of the uplifted terraces implies that the most External Dinarides did not experience substantial deformation other than surface uplift in the Neogene. These observations and the contemporaneous emplacement of igneous rocks (33–22 Ma) in the internal Dinarides suggest that the Oligo-Miocene orogen-wide uplift was driven by post-break-off delamination of the Adriatic lithospheric mantle, this was followed by isostatic readjustment of the remaining crust. Our study details how lithospheric delamination exerts an important control on crustal deformation and that its crustal signature and geomorphic imprint can be preserved for millions of years. |
| first_indexed | 2024-12-17T20:30:21Z |
| format | Article |
| id | doaj.art-3e3784192145498a816394f36eaa260a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-17T20:30:21Z |
| publishDate | 2021-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-3e3784192145498a816394f36eaa260a2022-12-21T21:33:36ZengNature PortfolioScientific Reports2045-23222021-01-0111111110.1038/s41598-021-81561-5Post-collisional mantle delamination in the Dinarides implied from staircases of Oligo-Miocene uplifted marine terracesPhilipp Balling0Christoph Grützner1Bruno Tomljenović2Wim Spakman3Kamil Ustaszewski4Institute for Geological Sciences, Friedrich-Schiller-University JenaInstitute for Geological Sciences, Friedrich-Schiller-University JenaFaculty of Mining, Geology and Petroleum Engineering, University of ZagrebFaculty of Geosciences, Utrecht UniversityInstitute for Geological Sciences, Friedrich-Schiller-University JenaAbstract The Dinarides fold-thrust belt on the Balkan Peninsula resulted from convergence between the Adriatic and Eurasian plates since Mid-Jurassic times. Under the Dinarides, S-wave receiver functions, P-wave tomographic models, and shear-wave splitting data show anomalously thin lithosphere overlying a short down-flexed slab geometry. This geometry suggests a delamination of Adriatic lithosphere. Here, we link the evolution of this continental convergence system to hitherto unreported sets of extensively uplifted Oligocene–Miocene (28–17 Ma) marine terraces preserved at elevations of up to 600 m along the Dinaric coastal range. River incision on either side of the Mediterranean-Black Sea drainage divide is comparable to the amounts of terrace uplift. The preservation of the uplifted terraces implies that the most External Dinarides did not experience substantial deformation other than surface uplift in the Neogene. These observations and the contemporaneous emplacement of igneous rocks (33–22 Ma) in the internal Dinarides suggest that the Oligo-Miocene orogen-wide uplift was driven by post-break-off delamination of the Adriatic lithospheric mantle, this was followed by isostatic readjustment of the remaining crust. Our study details how lithospheric delamination exerts an important control on crustal deformation and that its crustal signature and geomorphic imprint can be preserved for millions of years.https://doi.org/10.1038/s41598-021-81561-5 |
| spellingShingle | Philipp Balling Christoph Grützner Bruno Tomljenović Wim Spakman Kamil Ustaszewski Post-collisional mantle delamination in the Dinarides implied from staircases of Oligo-Miocene uplifted marine terraces Scientific Reports |
| title | Post-collisional mantle delamination in the Dinarides implied from staircases of Oligo-Miocene uplifted marine terraces |
| title_full | Post-collisional mantle delamination in the Dinarides implied from staircases of Oligo-Miocene uplifted marine terraces |
| title_fullStr | Post-collisional mantle delamination in the Dinarides implied from staircases of Oligo-Miocene uplifted marine terraces |
| title_full_unstemmed | Post-collisional mantle delamination in the Dinarides implied from staircases of Oligo-Miocene uplifted marine terraces |
| title_short | Post-collisional mantle delamination in the Dinarides implied from staircases of Oligo-Miocene uplifted marine terraces |
| title_sort | post collisional mantle delamination in the dinarides implied from staircases of oligo miocene uplifted marine terraces |
| url | https://doi.org/10.1038/s41598-021-81561-5 |
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