Nikolay Pak

Large numbers of igneous intrusions are emplaced in the magmatic arcs above subduction zones, but only a small fraction of them are mineralized with Cu ± Au ± Mo. Despite significant advances in recognizing the importance of magma source, volatile content, and redox condition in controlling mineralization, the magmatic processes required to form a...

Extending eastward from the Kyzylkum desert of Uzbekistan, through Tajikistan, Kyrgyzstan and continuing into western China, the late Paleozoic Tien Shan orogen in the southwestern Central Asia Orogenic Belt (CAOB) hosts one of the world’s richest gold provinces. The >10,000-metric ton (t) gold endowment of the Tien Shan province occurs within lode...

The article discusses new data obtained from mineralogical-petrographic, petrogeochemical, and isotopic-geochronological studies of the magmatic rocks of the Jerooy ore field, located in the western part of the Northern Tien Shan. The large Jerooy gold deposit of vein quartz-gold type is associated with the dio-rites of the Jerooy complex. Geochron...

In the Aktyuz-Boordinsky ore district in the Northern Tien Shan, numerous deposits and ore occurrences of gold, rare and rare earth metals and base metals are discovered. Gold deposits are characterized by the presence of a number of metasomatites: beresites, listvenites, K-feldspatites, etc. Many of them are also characterized by quartz-tourmaline...

Situated in the heart of the Tien Shan gold province, Unkurtash (3.5 Moz at 1.82 g/t) is a representative lode gold deposit that is hosted within the Carboniferous Andagul granodiorite in the Kassan district, western Kyrgyzstan. The Tien Shan gold province consists of porphyry and epithermal deposits, which are related to magmatic arcs, and lode go...

There are many Zn-Pb deposits in Tianshan of China and abroad, forming a giant Zn-Pb metallogenic belt. Why so many Zn-Pb deposits are located here? how geodynamic setting results in their formation? What is the regional ore-forming types and the key to the Zn-Pb metallogeny? Where is the future prospecting orientation? All these significant geolog...

The Chatkal-Kurama terrane is the most fertile region for porphyry-skarn Cu-Au mineralization (~31 Mt Cu and 2300 t Au) in the West Tianshan, even though in the Chatkal range of Kyrgyzstan only limited studies have been conducted. We present the first robust geochronological and geochemical data for the important Kuru-Tegerek and Bozymchak skarn Cu...

Western Tianshan Orogen, located in the conjunction of the Kazakhstan-Junggar Plate and the Karakum-Tarim Plate, has been regarded as the collision zone and metallogenic zone consisting of a series of Precambrian blocks, Paleozoic oceanic crust, and continental marginal arcs. The study of the orogenic-metallogenic processes of western Tianshan Moun...

The anatomy of an ancient accretionary complex has a significance for a better understanding of the tectonic processes of accretionary orogens and complex because of its complicated compositions and strong deformation. With a thorough structural and geochronological study of a fossil accretionary complex in the Atbashi Ridge, South Tianshan (Kyrgyz...

Our recent geochronological study on the Taldybulak Levoberezhny gold deposit in Kyrgyz Northern Tien Shan (KNTS) received critical comments by Boris Trifonov (2015) regarding the age of dikes and its relationship with gold mineralization at the deposit. In this contribution, based on a re-evaluation of our published data, together with new geochro...

The Taldybulak Levoberezhny gold deposit, located in the eastern part of the Kyrgyz Northern Tien Shan, is hosted in highly deformed Precambrian schist and gneisses that have undergone intense quartz, carbonate, fuchsite and tourmaline alterations. Gold mineralization is ultimately subdivided into two stages based on the observation of alteration a...

Western Tianshan Mountains extend from Uzbekistan through Tajikistan, Kyrgyzstan, southern Kazakhstan to Xinjiang Western Tianshan, with a length of 2500 km from west to east. This belt is the core zone of the "Asian Gold Belt" and shows evident potential of Au-Cu-Zn-Pb mineral resources. Large Au-Cu-Zn-Pb ore deposits are expected to be found in W...

In the western Tianshan, the giant and world-class gold deposits concentrating along the middle Tianshan and the both sides make up a giant gold metallogeny belt in the world, i.e. Asian Gold Belt, from Uzbekistan through Kyrgyzstan to western Xinjiang, China. Why the Asian Gold Belt was able to form along a zonal region of 2500 km in WE-direction?...

Крупнейшие в Кыргызстане месторождения золото-медно-порфирового типа находятся в Киргизском хребте в Северном Тянь-Шане (рис.1). На западе развиты медно-порфировые с золотом месторождения, формирование которых связано с ордовикскими островодужными обстановками (Андаш, Талды-Булак, Узунбулак, Каракол, Булакаши и др.). На востоке находится золото-пор...

The Aktiuz–Boordu Mining District is located in the Northern Tien Shan in the eastern part of Kyrgyzstan. The region is characterized by nappe-folding structures and comprises strongly deformed Precambrian and Lower Paleozoic sedimentary, volcano-sedimentary, and metamorphic sequences. Metamorphic rocks are represented by crystalline schists, para-...

In the Central Tien Shan, besides low sulfidation gold-quartz deposits connected with intrusions of the diorite-(monzodiorite)-granodiorite association, complex polygenous ore deposits occur. The Makmal gold deposit is a typical example. At the Makmal deposit, the diorite intrusions, skarns with disseminated gold-copper sulfide mineralization, and...