The most important distinctive feature of the central part of the Central Caucasus Segment of Azerbaijan (the Lesser Caucasus) is the connection of mineralisation with ore-concentrating dislocation systems. These systems are characterized by extensive northwestern trending fault zones. Major ore deposits (Zod, Tutkhun, etc.) are located at their intersections with meridional strike zones. An important part of the local structure is the Zod tectonic node, which has a significant influence on the localisation of gold mineralisation. One of the main factors determining the position of the area is its confinedness with the gabbroic massif occupying the tectonic centre, as well as the linearly extended contact strip of ultramafic igneous rocks and gabbro plates. Gold mineralisation in the Tutkhun area is localized in narrow and prolonged zones of intensely altered rocks of the granitoid complex and its exocontact halos. There are many dikes that are the most recent members of the intrusive formations. The distinct geological and structural characteristics of mineralisation identified at the Agduzdag deposit suggest a complex stockwork-style ore body, which integrates multiple structural elements. The Zod-Tutkhun-Agduzdag block represents a triune system of dislocations forming a geologically significant structural framework. The intersection of these dislocations has given rise to a complex tectonic center with a heterogeneous structural composition serving as the focal point for a multi-stage ore-forming process. These findings provide new insights into the potential for gold mineralisation within the Central Caucasus Segment of Azerbaijan and the southeastern part of the region, where similar geological conditions prevail.

Keywords: ore-concentrating structures, ore deposit, gold, hydrothermal alteration, Central Caucasus Segment of Azerbaijan, the Lesser Caucasus

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