Sources of Metals for the Rudny Altai VMS Deposits: Results of High-Precision MC-ICP-MS Lead Isotope Study

Чернышев, И. В.; Vikentyev, I. V.; Чугаев, А. В.; Dergachev, A. L.; Ratkin, V. V.

doi:10.1134/s0016702923060022

Cited by 5 publications

(2 citation statements)

References 85 publications

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“…From a geological point of view, the study area belongs to the so-called Rudny Altai, which is a southwestern domain in the Altai, distinguished by relatively low elevations From a geological point of view, the study area belongs to the so-called Rudny Altai, which is a southwestern domain in the Altai, distinguished by relatively low elevations (<2000 m and often <1000 m) and richness in geological resources. Information about the Rudny Altai can be found, particularly, in works by Chernyshev et al [38], Gorzhevsky and Yakovlev [39], Kozlov [40], Mesentseva [41], Obut and Shcherbanenko [42], Saraev et al [43], Sekerina and Egorov [44], and Seravkin and Kosarev [45]. The study area is dominated by Middle-Upper Devonian volcanosedimentary deposits with a total thickness of 3500 m (Figure 2).…”

Section: Geological Settingmentioning

confidence: 97%

“…(<2000 m and often <1000 m) and richness in geological resources. Information about the Rudny Altai can be found, particularly, in works by Chernyshev et al [38], Gorzhevsky and Yakovlev [39], Kozlov [40], Mesentseva [41], Obut and Shcherbanenko [42], Saraev et al [43], Sekerina and Egorov [44], and Seravkin and Kosarev [45]. The study area is dominated by Middle-Upper Devonian volcanosedimentary deposits with a total thickness of 3500 m (Figure 2).…”

Section: Geological Settingmentioning

confidence: 97%

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Neverovsky Palaeoreef and Associated Deep-Marine Facies: High-Value Late Devonian Geoheritage from the Rudny Altai

Gutak,

Ruban

2024

Heritage

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The Rudny Altai is a western segment of the Altai orogenic belt. Its geological richness makes its geoheritage exploration an urgent matter. Investigations in the Loktevsky District (Altai Region, Russian Federation) have led to the finding of three notable localities, which are proposed as geosites. Field investigations and both qualitative and semi-quantitative (scoring by criteria) studies were carried out to characterize and value the geoheritage properties of these localities. The Neverovsky palaeoreef is a relatively large geosite, representing a Frasnian reef developed on a volcanic edifice. The Zolotukha section and the Razdolnoe section are smaller geosites representing deep-marine facies of the Giventian–Frasnian transition and the late Frasnian, respectively. Seven geoheritage types are established in the Neverovsky palaeoreef, and four geoheritage types are established in the other two geosites. Examination of rarity, accessibility, vulnerability, and other properties allows the ranking of the Neverovsky palaeoreef globally and the other two geosites regionally. The three proposed geosites need special geoconservation measures (especially regarding their rich fossil content). The palaeoreef can be used for the promotion of local tourism.

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Section: Geological Settingmentioning

confidence: 97%

Section: Geological Settingmentioning

confidence: 97%

Neverovsky Palaeoreef and Associated Deep-Marine Facies: High-Value Late Devonian Geoheritage from the Rudny Altai

Gutak,

Ruban

2024

Heritage

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Givetian-Frasnian rift-related volcanism of the Shipunikha Depression, NW Rudny Altai, Central Asia: Tectono-magmatic significance and new constraints on whole-rock geochemistry, Nd-isotopic data and U Pb ages

Kuibida,

Kruk,

Vikentiev

et al. 2024

Lithos

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Orogenic Gold Deposits of Northern Transbaikalia, Russia: Geology, Age, Sources, and Genesis

Chugaev

2024

Geochem. Int.

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The paper presents newly obtained and summarizes preexisting data of long-term geochronological and isotope studies of orogenic mesothermal gold deposits in the world’s largest Lena metallogenic province and reviews interpretations of their genesis. Geochronologic data indicate that the gold mineralization was formed during three ore-forming Paleozoic events. The early Late Ordovician–Early Silurian (450–430 Ma) event produced the abundant veinlet—disseminated gold–sulfide mineralization in Neoproterozoic carbonaceous terrigenous–carbonate rocks of the Baikal–Patom foldbelt (BPB). The mineralization was formed simultaneously with regional metamorphic processes. The rejuvenation of hydrothermal activity in the BPB resulted in gold-bearing quartz veins, which was produced in the Middle Carboniferous (340–330 Ma) in relation to postcollisional granitoid magmatism. The latest ore-forming event occurred in the Early Permian (290–280 Ma) and affected exclusively in Precambrian structures of the Baikal-Muya foldbelt (BMB). It was synchronous with the development of intraplate alkaline and subalkaline magmatism in the region. Newly obtained and preexisting isotopic-geochemical (87Sr/86Sr, 143Nd/144Nd, Pb–Pb, and δ34S) data indicate that the mesothermal ore-forming systems of northern Transbaikalia were heterogeneous in their isotopic characteristics, which distinguishes them from the ore–magmatic (intrusion-related type) systems. Comparison of the Sr, Nd, and Pb isotopic composition of the ores and rocks, including magmatic rocks coeval with the gold mineralization, indicates that the Precambrian continental crust was the dominant source of mineral-forming components for the hydrothermal systems of the gold deposits. The contribution of the magmatic source to the genesis of the orogenic gold mineralization was limited and is identifiable only for the Early Permian ore-forming systems of the BMB, for which the input of metals from alkaline mafic melts was suggested.

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Sources of Metals for the Rudny Altai VMS Deposits: Results of High-Precision MC-ICP-MS Lead Isotope Study

Cited by 5 publications

References 85 publications

Neverovsky Palaeoreef and Associated Deep-Marine Facies: High-Value Late Devonian Geoheritage from the Rudny Altai

Neverovsky Palaeoreef and Associated Deep-Marine Facies: High-Value Late Devonian Geoheritage from the Rudny Altai

Givetian-Frasnian rift-related volcanism of the Shipunikha Depression, NW Rudny Altai, Central Asia: Tectono-magmatic significance and new constraints on whole-rock geochemistry, Nd-isotopic data and U Pb ages

Orogenic Gold Deposits of Northern Transbaikalia, Russia: Geology, Age, Sources, and Genesis

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