...G.G. Pavlova; A.S. Borisenko; V.A. Goverdovskii; A.V. Travin; I.A. Zhukova; I.G. Tret’yakova Abstract In the 1980s, Ag-Sb deposits were discovered in a new ore cluster of the Delyun-Yustyd back-arc rift basin in southeastern Altai and northwestern Mongolia. The Delyun-Yustyd basin is filled with up...

... of the Minusa basin ( Vorontsov et al., 2010 , 2011 , 2013b , 2015 , 2017 , 2018 ; Vrublevskii et al., 2016 ; Mustafaev et al., 2020 ) and Delyun–Yustyd basin ( Vorontsov and Yarmolyuk, 1992 , 1993 ; Krupchatnikov et al., 2018 ). Composition of OIB (oceanic-island basalts), IAB (island arc basalts), N...

... of the southeastern Altai, the northern segment of the Delyun-Sagsai trough, which occurs mostly on the territory of northwestern Mongolia. Its continuous section is composed of gray and black-shale flyschoid formations of the Yustyd Series of Middle-Late Devonian age (Frasnian-Famennian) broken through by granite...

... principal ore districts: the Tuvinian, at the margin of the Hercynian Tuva trough; the Khakass, at the margin of the Middle Paleozoic Minusa basin, and the South Altai, in the Delyun–Yustyd trough (D 2 –C 1 ) and at its margin ( Fig. 1 ). For the largest Co-bearing ore clusters in the ASO—the Yustyd...

... terranes and basins: TK — Tom’-Kolyvan’ zone, S — Salair, KB — Kuznetsk basin, KA — Kuznetsk Altai, M — Minusa basin, RA — Rudny Altai, SA — South Altai, AM — Altai-Mongolia terrane, WS — Western Sayan, D — Delyun-Yustyd basin, T — Tuva basin. Crustal blocks are separated by active faults. ...

...Fig. 1. Location of dike areas of the Chuya and intrusive massifs of the Terandzhik and Tarkhata complexes in southeastern Gorny Altai ( a ) and geologic structure of southeastern Gorny Altai, after Turkin and Fedak (2008) , simplified ( b ). a : 1 , Delyun–Yustyd trough; 2 , Cenozoic...

...; inset: 11 , Paleoasian Ocean (PAO); 12 , assumed subduction suture (SS); 13 , areas of igneous associations related to subduction; 14 , areas of igneous associations related to plume sources. Basins: M, Minusa; A, Agul; T, Tuva; DYu, Delyun–Yustyd; systems of grabens: KA, Kuznetsk Alatau; NM, North...

... Precambrian and Caledonian folded structures occupy most of northern Mongolia. Younger tectonic structures are here represented by Hercynian isolated geosyncline zones (Hangayn–Hentiyn, Kerulen, Delyun–Yustyd, and others) ( Yanshin, 1974 ). The Gunzhin Fault is contained in an active fragment...

... et al., 2011 ). The largest grabens with a length of more than 500 km (Tuvinian and Delyun–Yustyd troughs) have a similar history of development, which begins with the formation of thick Early Devonian volcanogenic strata and synchronous complexes of mafic dikes ( Kozakov et al., 2011 ; Kuzmin...

..., the most considerable ore-bearing structures formed, such as the Kuznetsk-Alatau Hg belt, Delyun-Yustyd Ag-Sb zone, Tuva Hg belt, and Khovu-Aksy Ni-Co ore cluster. ...

...–Yustyd troughs) joined each other at an angle of 100°. One of the branches, the Tuva Trough, strikes toward the northeast for over 500 km and was formed as a volcanic rift with an extended basaltic dike system. Similar structure is typical of the Delyun–Yustyd depression extending towards the northwest...

...., 1972 ; Yarmolyuk and Kovalenko, 2003 ; Zonenshain et al., 1990 ; Zubkov, 1986 ) including a series of Minusa basins (Nazarovo, Chulym–Yenisei, Syda–Erba, etc.), Mana graben, Rybinskoe basin, Tuvinian trough and its southern (Sangilen) framing as well as the Delyun–Yustyd trough and rift zones...