Published: 2025-06-06
Submitted manuscript to TECTONOPHYSICS

We just submitted a manuscript entitled: Tectonic Control on Magmatism at a Continental Junction: A case study of Bukulja Mts. pluton, Internal Dinarides. The abstract is as follows:
This study investigates the relationship between tectonic processes and magmatism in a structurally complex segment of the NE Internal Dinarides, located at the junction of the Adriatic microplate, European continental units and the Pannonian basin. The area under investigation experienced multiple tectonic events that have shaped its magmatic and structural history. The metamorphic basement of the distalmost part of the Adriatic microplate exhibits polyphase deformation and hosts two granitic intrusions: Oligocene Brajkovac granodiorite, and Miocene Bukulja two mica granite. Being located at the intersection of multiple continental blocks, this area offers key insights into the interplay between tectonic evolution and magmatic processes at a continental junction. We integrate structural analyses, anisotropy of magnetic susceptibility (AMS), U-Pb zircon geochronology and Lu-Hf isotopic data, and fission-track thermochronology to reconstruct the timing and mechanisms of deformation, magmatism, and exhumation. The results identify two distinct tectonomagmatic episodes: an Oligocene (32.05 Ma) I-type granitoid intrusion (Brajkovac granodiorite) linked to NE–SW extension, followed by a Miocene (21.2–20.9 Ma) S-type two-mica granite intrusion (Bukulja) associated with NW–SE extension. Thermochronological data indicate rapid cooling for both plutons, driven by tectonic exhumation. Three deformational phases were recognized: (1) Oligocene NE–SW extension, (2) Miocene NW–SE extension, and (3) Late Miocene transpression/strike-slip deformation. The orientation of AMS fabrics aligns well with paleostress tensors and highlights a strong coupling between extensional stress regime and magmatic fabric development. Altogether, these findings provide a refined temporal and geodynamic framework for post-collisional extension in the Internal Dinarides and illustrate how tectonic reorganization controls granitoid generation, emplacement, and exhumation in a continental orogenic setting.

Here is the full text.