Vol. 336 No. 4 (2025)

DOI https://doi.org/10.18799/24131830/2025/4/4473

Structural and geophysical criteria of gold minerality of the Taborninsky gold field (Southwestern Yakutia)

Relevance. In southwestern Yakutia, in the southern part of the Uguy graben, a number of gold deposits (Tabornoe, Gross, Temnoe, etc.) have been identified. They were formed during the period of Mesozoic tectono-magmatic activation in relation to the introduction of small intrusions of syenites, manifestation of gumbeitization and beresitization with associated gold mineralization. These large-volume objects are classified as new Ugui type. The low level of knowledge of such objects, combined with the simple technology of development and processing of such mineral raw materials, determines the relevance of identifying criteria for the mineralization of gold ore deposits of this type using the example of the Taborninsky ore field. Aim. To develop structural, material and geophysical criteria for gold mineralization of the Ugui type of the rank of ore field and deposit. Methods. To achieve this goal the authors used structural and material interpretation of modern spectrozonal images from Landsat, Aster, Sentinel and a digital relief model SRTM (Shuttle Radar Topographic Mission), processing and interpretation of physical fields based on aeromagnetic and airborne gamma spectrometric surveys with the construction of a structural and material diagram of the ore field and clarification of its geological structure. Conclusions. Gold mineralization is structurally controlled by reverse-thrust structural paragenesis in supra-intrusive areas identified by interpretation of satellite images. It was established that both the results of spectral analysis of space images and aeromagnetic and aerial gamma spectrometric fields can be considered as material criteria for the occurrence of ore-metasomatic processes.

Keywords:

ore gold deposit, Ugui type, Taborninsky ore field, search criteria, interpretation of satellite images, airborne geophysics

Authors:

Alexander V. Yarchuk

Yuriy S. Ananyev