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- W2896005864 abstract "The Danube Basin, located in the junction of the Eastern Alps and Western Carpathians, comprises up to 600 m thick alluvial succession, which was previously assigned to the Quaternary without geochronological constraints. The internal stratigraphy and timing of the succession remained unknown, although it has potential to provide an important record of geological evolution of the region. The present study involves 26Al/10Be burial dating of 17 samples from wells along with facies correlation from the NW margin towards the basin centre, with the purpose of recovering the Pliocene-Quaternary depositional archive. Obtained ages ranging from 0.58 ± 0.06 to 3.39 ± 2.11 Ma allow for four separate members to be distinguished. The lowermost Kolárovo Fm. with inferred depositional age of ~5–2.6 Ma shows lateral variability with gradual shift of channel fills composed of sands and gravelly sands across the floodplain/pond facies from NW to SE. An abrupt increase of sediment supply:accommodation ratio was observed at ~2.6 Ma, and led to the dominance of amalgamated gravelly channel fills in the centre of the basin. Another sharp increase of sediment supply was observed at ~1.2 Ma, reflected in a brief period of dominance of gravelly channel fill facies across the basin. This highly supplied environment then gradually occupied the whole basin after ~0.9 Ma. Petrographic study implies a distant provenance for the period ~5.0–2.6 Ma. The subsequent interval is characterised by sediment sourcing from uplifting mountains of the Western Carpathians on the margins of the Danube Basin, drained by the Váh River. A notable change appeared after ~0.9 Ma, when the Eastern Alpine provenance of clasts brought by the Danube River prevailed. Based on a review of existing data about regional tectonics and climate, the changes in this depositional record are interpreted as an interplay of climate changes (~2.6 Ma and ~1.2 Ma) and local vertical movements affecting both sediment input and drainage network patterns. The accommodation space was formed without contribution of fault activity according to the observed settings. A noteworthy observation is time transgressive shift of facies boundaries in the Pliocene-Quaternary succession." @default.
- W2896005864 created "2018-10-26" @default.
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- W2896005864 date "2018-12-01" @default.
- W2896005864 modified "2023-10-15" @default.
- W2896005864 title "Revealing the late Pliocene to Middle Pleistocene alluvial archive in the confluence of the Western Carpathian and Eastern Alpine rivers: 26Al/10Be burial dating from the Danube Basin (Slovakia)" @default.
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- W2896005864 doi "https://doi.org/10.1016/j.sedgeo.2018.10.001" @default.
- W2896005864 hasPublicationYear "2018" @default.
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