1 https://ojs.bilpublishing.com/index.php/jees Journal of Geological Research | Volume 03 | Issue 04 | October 2021 1. Introduction Within the central part of the Alpine-Mediterrane- an-Himalayan mountain-fold belt there are fragments of ancient continental-margin structures – paleoisland arcs and backarc and interarc paleobasins. It is within these structures that economic volcanogenic deposits of non-fer- rous metals have been concentrated. Among the most important geological events that have conditioned the tec- tonic setting of this segment of the mountain-fold belt are: (1) the partition of the South Armenian-Iranian microplate from the north margin of Gondwana in Permian-Triassic time and its accretion to the active Passifc-type continen- tal margin of the Eurasian continent [1-4] ; (2) the opening of a rift in Late Triassic-Early Jurassic that was later trans- *Corresponding Author: S. Kekelia, Department of mineral deposits and geochemistry, Al. Janelidze Institute of Geology of Ivane Javakhishvili Tbilisi State University, Georgia,the U.S.; Email: sergokekelia@yahoo.com DOI: https://doi.org/10.30564/jgr.v3i4.3572 Copyright © 2021 by the author(s). Published by Bilingual Publishing Co. This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License. (https://creativecommons.org/licenses/by-nc/4.0/) Journal of Geological Research ARTICLE Volcanogenic Deposits of Non-ferrous Metals in the Lesser Caucasus and Eastern Pontides S. Kekelia * N.Gagnidze I. Mshvenieradze G. Kharazishvili Department of mineral deposits and geochemistry, Al. Janelidze Institute of Geology of Ivane Javakhishvili Tbilisi State University, Georgia,the U.S. ARTICLE INFO ABSTRACT Article history Received: 16 August 2021 Revised: 6 September 2021 Accepted: 6 September 2021 Published Online: 28 September 2021 The paper presents brief characteristics of geological environments of ore deposit occurrences in Turkey, Georgia and Armenia. They can be attributed to Kuroko-type deposits, being distinguished by the character of ore accumulation. To the west, in Turkey, there are epigenetic and hydrothermal-sedimentary copper-zinc deposits that were formed in deep restricted basinal settings. An example of the latter is the Chayeli deposit. To the east, in the Caucasus, we have predominantly only epigenetic deposits. Besides, in the Bolnisi mining district (Georgia) there is the Madneuli deposit which represents an example of polyformational deposit. Here, within the restricted territory, have been concentrated: barite, barite-polymetallic, gold-bearing secondary quartzite, large-scale stockworks of copper ores. Judged by the 87Sr/86Sr ratios, some volcanites which are spatially associated with ores, might have been products of the “differentiation” of undepleted mantle, or other magmas that were generated in the lower part of the earth crust. In the Alaverdi ore district in Armenia, there are Jurassic volcano- depressions that host copper, copper-zinc and barite-sulfide ores. All the deposits of the Alaverdi district, porphyry copper including, contain economic reserves of ores. On the basis of available literature material and our own data, there has been created a mental-logical geological-genetic model of volcanogenic deposits. Keywords: Kuroko-type deposits Madneuli Chayeli Paleoisland Undepleted mantle Ore https://ojs.bilpublishing.com/index.php/jgr-a