Multiple episodes of Late Paleozoic Cu-Au mineralization in the Chatkal-Kurama terrane: New constraints from the Kuru-Tegerek and Bozymchak skarn deposits, Kyrgyzstan

Zhang, Bo; Seltmann, Reimar; Xue, Chunji; Wang, Tao; Dolgopolova, Alla; Li, Chao; Zhou, Limin; Pak, Nikolay; Ивлева, Е. А.; Chai, Mingchun; Zhao, Xiaobo

doi:10.1016/j.oregeorev.2019.103077

Cited by 21 publications

(4 citation statements)

References 51 publications

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“…The older (ca. 326–323 Ma) of these igneous suites were assigned to a Late Carboniferous subduction‐related magmatism (Solomovich, 1997) and could be formed due to progressing flat subduction (Soloviev et al, 2018; Zu et al, 2019), whereas younger (ca. 305–304 Ma) high‐K calc‐alkaline to shoshonitic suites supposedly mark the cessation of supra‐subduction magmatism (Zu et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…326–323 Ma) of these igneous suites were assigned to a Late Carboniferous subduction‐related magmatism (Solomovich, 1997) and could be formed due to progressing flat subduction (Soloviev et al, 2018; Zu et al, 2019), whereas younger (ca. 305–304 Ma) high‐K calc‐alkaline to shoshonitic suites supposedly mark the cessation of supra‐subduction magmatism (Zu et al, 2019). The granitoid magmatism has further evolved to a post‐collisional setting in the Early Permian (Alexeiev et al, 2016; Seliverstov & Ges'', 2001; Seltmann et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

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Late Palaeozoic potassic igneous rocks of the Molo‐Sarychat pluton in the eastern Kyrgyz Tien Shan: Geochemistry, U–Pb zircon geochronology and implications for related skarn‐porphyry Mo‐W‐Cu‐Au mineralization

Soloviev,

Kryazhev,

Semenova

et al. 2024

Geological Journal

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The Molo‐Sarychat multiphase pluton is situated along the fault systems of the ‘Main Structural Line of Tien Shan’ (known also as the ‘Nikolaev Line’). It comprises mafic to intermediate (monzodiorite, monzonite) and silicic (quartz monzonite, monzogranite and leucogranite‐alaskite) rocks, followed by the late mafic (monzodiorite‐porphyry to lamprophyre) dikes. Isotopic U‐Pb zircon dating of quartz monzonite and monzogranite indicates their Early Permian age (ca. 293 to 286 Ma). The rocks appear to have been produced by remelting of a partially crystallized (mush) magma batch at deeper levels, which is evident by the presence of zircon antecrysts dated at some 306 to 320 Ma. These geochronological data are consistent with a post‐collisional setting of the pluton that occurred after the cessation of subduction, which affected the Middle Tien Shan in the Late Palaeozoic. Geochemical signatures of the igneous rocks from the Molo‐Sarychat pluton correspond to high‐K calc‐alkaline to shoshonitic series intrusions emplaced in a post‐collisional setting. An initial shoshonitic magma was produced by a low‐degree partial melting of the metasomatically enriched upper mantle, with amphibole fractionation in a deep (lower crustal) magma chamber. In this evolution, a generation, under the influence of mantle‐supplied fluids and heat, granitic magmas in the crustal protolith can be suggested, with further mixing/mingling of the mantle‐derived mafic (shoshonitic) magma and mantle‐induced crustal granitic magma, followed by the magma fractionation and emplacement at shallower crustal levels. The skarn‐porphyry Mo‐Cu‐W(‐Au) mineralization associated with the Molo‐Sarychat pluton complements the group of similar deposits associated with high‐K calc‐alkaline to shoshonitic series intrusions in the Middle Tien Shan and globally. The characteristic Mo‐W‐Cu‐Au metal assemblage and the high endowment in W and particularly Mo can be related to the fertilization of subduction‐modified subcontinental mantle in these metals, and its subsequent involvement in the magma generation in post‐collisional setting. A certain role of crustal magma sources in the strong Mo endowment can be considered that would be consistent with some A‐type granitoid affinity of the igneous rocks. The Early Permian age of these high‐potassic intrusions supporting their post‐collisional emplacement is remarkably similar to the age of hydrothermal alteration assemblages, previously reported for the super‐large Kumtor Au deposit situated in a similar post‐collisional setting nearby.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Late Palaeozoic potassic igneous rocks of the Molo‐Sarychat pluton in the eastern Kyrgyz Tien Shan: Geochemistry, U–Pb zircon geochronology and implications for related skarn‐porphyry Mo‐W‐Cu‐Au mineralization

Soloviev,

Kryazhev,

Semenova

et al. 2024

Geological Journal

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“…The Yili terrane and Middle Tianshan are separated from the South Tianshan by the South Central Tianshan suture (Atbashi-Inylchek Fault) that was formed by the closure of the Turkestan Ocean (the South Tianshan Ocean) (Fig. 1; Windley et al 2007;Zu et al 2019). The Yili terrane forms the eastern part of the Kazakh-Yili microcontinent, beside the easternmost part of North Tianshan (Fig.…”

Section: Geological Backgroundmentioning

confidence: 99%

“…2007; Zu et al . 2019). The Yili terrane forms the eastern part of the Kazakh–Yili microcontinent, beside the easternmost part of North Tianshan (Fig.…”

Section: Geological Backgroundmentioning

confidence: 99%

Petrogenesis and tectonic implications of the Early Carboniferous shoshonitic to calc-alkaline magmatic rocks of the southern Yili terrane, western Tianshan

et al. 2023

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In the Yili terrane at Awulale mountain, most shoshonitic lavas are related to post-collision extension and were extruded during the Late Carboniferous to Early Permian (310–280 Ma). Herein, we evaluate a small-volume occurrence of shoshonitic magmas in the southern Yili terrane formed c. 346 Ma ago. The high MgO (Mg#) and positive Hf isotope values of the shoshonitic magmas indicate the input of juvenile mantle-derived material. Still, their high Ba–Sr signatures were likely inherited from the partial melting of previously metasomatized lithospheric mantle. We argue the shoshonitic magmatic activity recorded a syn-subduction extensional history in the Yili terrane. This interpretation is consistent with the magmatic records from Early Carboniferous A-type granite and magnesian andesite found in the Zhaosu–Adentao–Dahalajunshan area of the southern Yili terrane. Combined with the geological development in this area, we propose that the emergence of the shoshonitic rocks records either the retreat of the trench or the rollback of the Junggar oceanic slab that occurred at or before the 346.1 ± 3.1 Ma age of the rocks.

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Geology, geochronology, and S-Pb-Os geochemistry of the Alastuo gold deposit, West Tianshan, NW China

et al. 2020

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Multiple episodes of Late Paleozoic Cu-Au mineralization in the Chatkal-Kurama terrane: New constraints from the Kuru-Tegerek and Bozymchak skarn deposits, Kyrgyzstan

Cited by 21 publications

References 51 publications

Late Palaeozoic potassic igneous rocks of the Molo‐Sarychat pluton in the eastern Kyrgyz Tien Shan: Geochemistry, U–Pb zircon geochronology and implications for related skarn‐porphyry Mo‐W‐Cu‐Au mineralization

Late Palaeozoic potassic igneous rocks of the Molo‐Sarychat pluton in the eastern Kyrgyz Tien Shan: Geochemistry, U–Pb zircon geochronology and implications for related skarn‐porphyry Mo‐W‐Cu‐Au mineralization

Petrogenesis and tectonic implications of the Early Carboniferous shoshonitic to calc-alkaline magmatic rocks of the southern Yili terrane, western Tianshan

Geology, geochronology, and S-Pb-Os geochemistry of the Alastuo gold deposit, West Tianshan, NW China

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