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![U–Pb isotope diagrams for zircon grains from the rocks of the Gremyachikha and North Gremyachikha massifs. Gray ellipses mark the age of xenogenic zircon, and white ones, the age of magmatic zircon.]()
![Discrimination diagrams for the studied massifs: a – SiO2–(K2O + Na2O) diagram (Le Maitre, 1989), where I–III – composition fields of rocks (I – of normal alkalinity, II – of medium alkalinity, III – of high alkalinity; b – SiO2–K2O diagram (Rickwood, 1989); c – A/CNK–A/NK diagram (Maniar and Piccoli, 1989); d – SiO2–FeO*/(FeO + MgO) diagram (Frost et al., 2001); e – Ab–An–Or diagram (O’Connor, 1965); A – tonalite, B – granodiorite, C – adamellite, D – trondhjemite, E – granite. The results of rock analysis are listed in Table 1. 1 – Gremyachikha massif, 2 – North Gremyachikha massif.]()
![Trace element and REE patterns (a, b) and indicator Al2O3–Yb (c) (Arth, 1979) and Eu–Yb (d) (Turkina, 2000) diagrams for rocks of the Gremyachikha and North Gremyachikha massifs (Table 1). a, b — Chondrite- and primitive-mantle-normalized (Sun and McDonough, 1989) patterns. Gray field marks the compositions of the Gremyachikha massif plagiogranites (Rudnev et al., 2006). d — Triangles mark element contents in melts resulted from the dehydration (solid lines) and hydrous (dashed lines) melting of ТН1, ТН2, and MORB (Beard and Lofgren, 1991; Rapp et al., 1991; Rapp and Watson, 1995) in equilibrium with five types of restites (Turkina, 2000). I — Pl + Cpx + Opx, II — Hbl + Pl ± Cpx ± Opx, III, IV — Hbl + Cpx + Pl ± Grt, V — Cpx + Grt ± Hbl, where Pl is plagioclase, Cpx is clinopyroxene, Opx is orthopyroxene, Hbl is amphibole, and Grt is garnet; LSA is low-silica adakites, HAS is high-silica adakites. Designations follow Fig. 3.]()
![Cathodoluminescence images of zircon from the rocks of the Gremyachikha and North Gremyachikha massifs. Solid circles mark the points of U–Pb isotope studies of magmatic and xenogenic zircon, with its 206Pb/238U age (Ma). The results of analyses are presented in Tables 2 and 3 and in Fig. 6.]()
![Scheme of the geologic structure of the northern Kundusuyul pluton, modified and supplemented from Rudnev et al. (2006). 1 – carbonateterrigenous-volcanic deposits, V–Є1; 2 – dolomites, limestones, shales, and metavolcanic rocks, R2–3; 3 – granosyenites of the Chebula alkali granite–granite complex, D1–2; 4 – tonalites and plagiogranites, R3; 5, 6 – Kundusuyul gabbro–diabase complex, R3? (5 – diabase dikes, 6 – gabbro and diorites, undivided); 7, 8 – Moskovka peridotite–pyroxenite–gabbro complex, R3? (7 – gabbroids, 8 – peridotites and pyroxenites, undivided); 9 – faults; 10 – dips and strikes (deg); 11 – localities of sampling for U–Pb isotope zircon dating. Massifs: G – Gremyachikha, Gl – Glukhovka, M – Moskovka, NG – North Gremyachikha, K – Kundusuyul.]()
![Scheme of the geologic structure of northern Kuznetsk Alatau, modified and supplemented from Rudnev et al. (2008). Stratified deposits: 1 – Meso–Cenozoic deposits of the Chulym–Yenisei basin; 2 – volcanic deposits of the Uchulen–Kazankol and Palatninsk–Belaya Osipovka complexes, undivided, D1; 3 – volcanic deposits of the Bazyr–Apshan complex of the Nazarovka basin, undivided, D1; 4 – terrigenous-carbonate deposits of the Taimen Formation, O1; 5 – Berikul’ rhyodacite–basalt–trachybasalt complex, Є2; 6 – terrigenous-carbonate deposits of the Usa Formation, Є1; 7 – volcanic deposits of the Ust’-Anzas trachyte–trachybasalt–basalt complex, Є1; 8 – volcanic deposits of the Chumai plagiorhyolite–basalt complex, V– Є1; 9 – calcareous and carbonate–clayey deposits of the Malyi Rastai Formation and clay–silica–calcareous deposits of the Prokop’evo Formation, R3?–V. Intrusive deposits, undivided: 10 – Tel’bes monzodiorite–granodiorite–melanogranite complex, D1; 11 – Goryachegorsk alkali gabbroid complex, D1; 12 – Chebula alkali granite–granite complex, D1; 13 – Karadat alkali syenite complex, D1; 14 – Martaiga(?) quartz diorite–granodiorite (tonalite)–granite complex, О1; 15 – Karnayul’ granosyenite–melanogranite complex, О1; 16–18 – Malyi Dudet monzogabbro–monzodiorite complex, Є3–O1 (16 – syenites and quartz syenites, 17 – monzodiorites, 18 – monzogabbro); 19 – Upper Petropavlovka alkali gabbroid complex, Є3–O1; 20 – Krasnyi Kamen’ leucomonzodiorite–leucomonzonite–granosyenite complex, Є3–O1; 21 – Martaiga quartz diorite–granodiorite (tonalite)–granite complex, Є3–O1; 22 – Taskyl pyroxenite–gabbro complex, Є2; 23 – early Cambrian plagiogranite complex, Є1; 24 – Tylin (Lavrenovo) diorite–tonalite–plagiogranite complex, Є1; 25 – early Cambrian pyroxenites and gabbro, Є1; 26 – Barkhat dunite–harzburgite complex, R3–Є1; 27 – tonalite–plagiogranite association, R3; 28 – Kundusuyul gabbro–diorite–dolerite complex, R3?; 29 – Moskovka peridotite–pyroxenite–gabbro complex, R3?; 30 – faults; 31 – results of U–Pb isotope dating, age, Ma (Vrublevskii et al., 2003; Rudnev et al., 2006, 2008), parenthesized is the number of the massif (1 – Tylin, 2 – Kozhukh, 3 – Krasnyi Kamen’, 4 – Malyi Dudet, 5 – Kaidalovo, 6 – Udarnaya, 7 – Karnayul, 8 – Tsentral’nyi, 9 – Upper Petropavlovka, 10 – Karadat, 11 – Gremyachikha, 12 – North Gremyachikha, in the Kundusuyul pluton). Roman numerals in squares denote batholiths (I – Kozhukh, II – Dudet, and III – Tsentral’nyi). Inset shows a scheme of geological and structural regionalization of northern Kuznetsk Alatau, after Shokal’skii et al. (2000): PZU – Pezas–Zolotoi Kitat uplift, IU – Iyus uplift, AU – Azyrtal uplift, ChB – Chumai block, KB – Kanym block, TBB – Talanovka–Bogorodkaii block, TB – Tom’ block, TG – Taidon graben, RG – Rastai graben, SG – Sargaya graben, PVB – Palatnaya volcanic basin, NB – Nazarovka basin, NMB – North Minusa basin. Rectangle outlines the study area.]()
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Journal Article
Conditions of Formation and Sources of Melts of Early Neoproterozoic Granites in Northern Kuznetsk Alatau
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 February 2023
Russ. Geol. Geophys. (2023) 64 (2): 133–147.
...S.N. Rudnev; O.M. Turkina; D.V. Semenova; P.A. Serov Abstract —We present data on the geochronology, geochemistry, and Nd isotope composition of granitoids of the Gremyachikha and North Gremyachikha massifs (Kundusyul pluton) located in the Neoproterozoic metamorphosed island arc calc-alkalic...
FIGURES
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Image
U–Pb isotope diagrams for zircon grains from the rocks of the Gremyachikha ...
in Conditions of Formation and Sources of Melts of Early Neoproterozoic Granites in Northern Kuznetsk Alatau
> Russian Geology and Geophysics
Published: 01 February 2023
Fig. 6. U–Pb isotope diagrams for zircon grains from the rocks of the Gremyachikha and North Gremyachikha massifs. Gray ellipses mark the age of xenogenic zircon, and white ones, the age of magmatic zircon.
Image
Discrimination diagrams for the studied massifs: a – SiO 2 –(K 2 O + Na 2...
in Conditions of Formation and Sources of Melts of Early Neoproterozoic Granites in Northern Kuznetsk Alatau
> Russian Geology and Geophysics
Published: 01 February 2023
massif, 2 – North Gremyachikha massif.
Image
Trace element and REE patterns ( a , b ) and indicator Al 2 O 3 –Yb ( c ) ...
in Conditions of Formation and Sources of Melts of Early Neoproterozoic Granites in Northern Kuznetsk Alatau
> Russian Geology and Geophysics
Published: 01 February 2023
Fig. 4. Trace element and REE patterns ( a , b ) and indicator Al 2 O 3 –Yb ( c ) ( Arth, 1979 ) and Eu–Yb ( d ) ( Turkina, 2000 ) diagrams for rocks of the Gremyachikha and North Gremyachikha massifs ( Table 1 ). a, b — Chondrite- and primitive-mantle-normalized ( Sun and McDonough, 1989
Image
Cathodoluminescence images of zircon from the rocks of the Gremyachikha and...
in Conditions of Formation and Sources of Melts of Early Neoproterozoic Granites in Northern Kuznetsk Alatau
> Russian Geology and Geophysics
Published: 01 February 2023
Fig. 5. Cathodoluminescence images of zircon from the rocks of the Gremyachikha and North Gremyachikha massifs. Solid circles mark the points of U–Pb isotope studies of magmatic and xenogenic zircon, with its 206 Pb/ 238 U age (Ma). The results of analyses are presented in Tables 2 and 3
Image
Scheme of the geologic structure of the northern Kundusuyul pluton, modifie...
in Conditions of Formation and Sources of Melts of Early Neoproterozoic Granites in Northern Kuznetsk Alatau
> Russian Geology and Geophysics
Published: 01 February 2023
, undivided); 9 – faults; 10 – dips and strikes (deg); 11 – localities of sampling for U–Pb isotope zircon dating. Massifs: G – Gremyachikha, Gl – Glukhovka, M – Moskovka, NG – North Gremyachikha, K – Kundusuyul.
Image
Scheme of the geologic structure of northern Kuznetsk Alatau, modified and ...
in Conditions of Formation and Sources of Melts of Early Neoproterozoic Granites in Northern Kuznetsk Alatau
> Russian Geology and Geophysics
Published: 01 February 2023
– faults; 31 – results of U–Pb isotope dating, age, Ma ( Vrublevskii et al., 2003 ; Rudnev et al., 2006 , 2008 ), parenthesized is the number of the massif (1 – Tylin, 2 – Kozhukh, 3 – Krasnyi Kamen’, 4 – Malyi Dudet, 5 – Kaidalovo, 6 – Udarnaya, 7 – Karnayul, 8 – Tsentral’nyi, 9 – Upper Petropavlovka
