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.