Article name Structural and Dynamic Features of the Lugokan Ore Node and Its Prospects (South-Eastern Transbaikalia)
Authors Salikhov S.S. ,
Ignatiev A.A. Postgraduate,
Bibliographic description Salikhov V. S., Ignatiev A. A. Structural and dynamic features of the Lugokan ore node and its prospects (South-Eastern Transbaikalia) // Transbaikal State University Journal. 2023. Vol. 29, no. 3. P. 16–25. DOI: 10.2109/2227-9245-2023-29-3-16-25.
Category Earth and Environmental Sciences
DOI 553.41(571.5)
DOI 10.2109/2227-9245-2023-29-3-16-25
Article type Original article
Annotation The well-known ore object of Eastern Transbaikalia- Lugokan gold-silver-copper (with antimony) node is evaluated from geostructural and geodynamic positions; its high prospects are shown. The object of the study is the Lugokan ore node, with an area of 150 km2, which is the north-eastern closure of the Gazimur ore zone, where large similar geological and industrial ore deposits ‒ Bystrinskoye and Kultuminskoye have been already operating. The subject of the study is the complex Lugokan ore-magmatic system of long-term development. The purpose of the study is to substantiate the high prospects of the Lugokan ore node for complex mineralization (copper, gold, silver, antimony, bismuth, iron, etc.). Data on the need to study structural-tectonic (nodes of endogenous activity) and deep geodynamics as derivatives of the activity of mantle plumes are presented. The results of the study are as follows: the uniqueness of the territory under consideration is emphasized by its regional geotectonic position between the Siberian and Chinese cratons and the extensive development of deep faults and ring structures. The geodynamic regime, according to geological and structural features, corresponds to the regime associated with shear deformations occurring in the areas of lateral compression, alternating with stretching intervals, which leads to the formation of focal dome and radial structures. The most characteristic representatives of the geodynamic regime are the shear conjugate. The long-term evolutionarily developing Lugokan ore node has led to the localization of complex scarn-porphyry mineralization here with prospects not only for the upper floor (200–400m), but also for the lower (800–1000m). The most promising areas of the territory under consideration should be considered the focal dome structure located in the eastern extension of the Silver deposit (the upper reaches of the Aemkan River), as well as the volcano-dome structure in the upper reaches of the Dorozhnaya Pad (the watershed with the Takovka stream).
Key words Transbaikalia, Lugokansky ore cluster, complex mineralization, skarn-porphyry industrial type, resources, ore-magmatic system, gabbrogranitoid pluton, fluidolites, volcano-dome structure, structural and dynamic features
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