Gold-bearing volcanogenic fields of non-ferrous metals of the Lesser Caucasus and the Eastern Pontides and their genesis
Babazadeh V.M.1, Abdullayeva Sh.F.1, Novruzova S.R.1, Ibrahimov J.R.2
1 Baku State University, Azerbaijan 33, acad. Zahid Khalilov Str., Baku, AZ1148: vasifbabazadeh1938@bsu.edu.az; shakhla.a@gmail.com; samiranovruzova001@gmail.com;
2 Azerbaijan International Mining Company Limited 2, Izmir Str., Baku, AZ1065: Javid.Ibrahimov@aimc.az
DOI: 10.33677/ggianas20240200123
Summary
In the countries of the South Caucasus and Türkiye, the most representative gold-bearing volcanogenic fields are known in the strata composing fragments of the Pontic-South Caucasian paleoarc, which was active during the Mesozoic Era. At that time, the oceanic crust was subducted under the arc, which was the marginal part of the Eurasian continent. Separate segments of the arc differed in their geodynamic development, due to which different types of volcanogenic fields occurred in them. Besides epigenetic deposits, hydrothermal-sedimentary deposits are also known within the Pontides (Türkiye) in the west.
The paper deals with the geological environments of deposits’ occurrence in Türkiye, Azerbaijan, Armenia and Georgia. Most of them can be attributed to the Kuroko type and differ in the nature of ore accumulation: copper-zinc deposits, which were apparently formed in the conditions of a deep-sea basin, are known in Türkiye, and we have examples of only epigenetic fields to the east. The Gadabay and Alaverdi ore regions are interesting in that copper, copper-zinc and barite-sulfide ores are concentrated in the Jurassic volcanic depressions, and porphyry copper fields – Garadag and Tutkhun are known in the raised wedge-shaped blocks that limit the volcanic depressions. A mental logical geological and genetic model of volcanogenic fields was created based on the literary material, which has been collected for years, as well as our own data.
Fields of volcanogenic nature, despite the fact that they are formed in similar PTX conditions, have their own “appearance”, taking into account which is extremely important when predicting fields in specific areas.
Keywords: field, ore region, paleo-arc, inclusion, fluid, isotope
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DOI: 10.33677/ggianas20240200123