International Geological Journal - Official Journal of the Carpathian-Balkan Geological Association

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Geodynamic interpretation of the Late Cretaceous syn-depositional magmatism in central Serbia: Inferences from biostratigraphic and petrographical investigations

Published: Dec 2020

Pages: 526 - 538

DOI: https://doi.org/10.31577/GeolCarp.71.6.4

Authors: MARINKO TOLJIĆ, BOJAN GLAVAŠ-TRBIĆ, UROŠ STOJADINOVIĆ, NEMANJA KRSTEKANIĆ, DANICA SREĆKOVIĆ-BATOĆANIN

Abstract: High-resolution biostratigraphic dating of (hemi)pelagic limestones stratigraphically adjacent to syn-depositional bimodal magmatites in central Serbia, based on planktonic foraminiferal assemblages, determines that the magmatism occurred during Coniacian to Santonian. This bimodal magmatism, which includes both basaltic magmas with associated peperites and trachydacitic magmas, was associated with syn-subductional extension, which was triggered by roll-back and steepening of subducting Neotethys oceanic lithosphere, located between the converging continental margins of Adria and Europe. The Late Cretaceous extension led to subsidence and formation of a fore-arc basin above the sub­duction zone. Co-genetic magmatic occurrences, including basalts, trachydacites, and lamprophyres, are distributed in the same fore-arc domain along the entire European continental margin. The fore-arc magmatism migrates in space and time from the south towards the north and north-west.

Keywords: syn-subductional extension, bimodal magmatism, biostratigraphy, fore-arc basin, central Serbia

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