The oldest island-arc granitoids of Chingiz-Tarbagatay region (Eastern Kazakhstan): age substantiation and сomposition affinities

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Resumo

The oldest granitoids of Kan-Сhingiz complex in Chingiz-Tarbagatay region of Eastern Kazakhstan, composed of quartz diorites, granodiorites, plagiogranites and granites, are first dated. U-Pb (ID-TIMS and SIMS) geochronological study of granites and plagiogranites is carried out and age estimates 509±2 and 512±3 Ma, approximately corresponding to the boundary of Early and Middle Cambrian, are obtained. These data allow to consider the age of volcanic-sedimentary sequences, host for granitoids, as Early Cambrian. Composition affinities of granitoids of Kan-chingiz complex indicate their formation within ensimatic island arc.

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Sobre autores

К. Degtyarev

Geological Institute of the Russian Academy of Sciences

Autor responsável pela correspondência
Email: degtkir@mail.ru

Academician of the RAS

Rússia, Moscow

М. Luchitskaya

Geological Institute of the Russian Academy of Sciences

Email: degtkir@mail.ru
Rússia, Moscow

А. Тret’yakov

Geological Institute of the Russian Academy of Sciences

Email: degtkir@mail.ru
Rússia, Moscow

Е. Sal’nikova

Institute of Precambrian Geology and of the Russian Academy of Sciences

Email: degtkir@mail.ru
Rússia, St.-Petersburg

Y. Plotkina

Institute of Precambrian Geology and of the Russian Academy of Sciences

Email: degtkir@mail.ru
Rússia, St.-Petersburg

Bibliografia

  1. Моссаковский А. А., Руженцев С. В., Самыгин С. Г., Хераскова Т. Н. Центрально-Азиатский складчатый пояс: геодинамическая эволюция и история формирования // Геотектоника. 1993. № 6. С. 3‒32.
  2. Xiao W. J., Huang B. C., Han C. M., Sun S., Li J. L. A review of the western part of the Altaids: a key to understanding the architecture of accretionary orogens // Gondwana Res. 2010. V. 18. P. 253–273.
  3. Дегтярев К. Е. Тектоническая эволюция раннепалеозойских островодужных систем и формирование континентальной коры каледонид Казахстана. М.: ГЕОС, 2012. 289 с.
  4. Рязанцев А. В. Структурная зональность нижнепалеозойских комплексов в Бощекульской островодужной системе на северо-востоке Центрального Казахстана // Очерки по региональной тектонике. Т. 2: Казахстан, Тянь-Шань, Полярный Урал. М.: Наука, 2005. С. 5–39.
  5. Shen P., Pan H., Seitmuratova E., Yuan F., Jakupova S. A Cambrian intra-oceanic subduction system in the Bozshakol area, Kazakhstan // Litos. 2015. V. 224–226. P. 61–77.
  6. Геология Чингизской геоантиклинорной зоны (Центральный Казахстан). Алма-Ата: Наука, 1962. 168 с.
  7. Дегтярев К. Е., Шатагин К. Н., Ковач В. П., Третьяков А. А. Процессы формирования континентальной коры каледонид хребта Чингиз (Восточный Казахстан) // Геотектоника. 2015. № 6. С. 20–51.
  8. Ергалиев Г. Х., Пирогова Т. Е., Жемчужников В. Г., Никитина О. И., Иванова Н. И. и др. Атлас опорных геологических разрезов стратотипов фанерозоя Казахстана. Алматы: ТОО «378», 2020. 612 с.
  9. Геологическая карта Казахской ССР. Масштаб 1:500000. Восточно-Казахстанская серия. Объяснительная записка. Алма-Ата: Мингео СССР, 1979. 184 с.
  10. Tolmacheva T. J., Degtyarev K. E., Samuelson J., Holmer L. E. Middle Cambrian to Lower Ordovician from the Chingiz Mountain Range, central Kazakhstan // Alcheringa: An Ausralasian Journal of Palaeontology. 2008. V. 32. № 4. P. 443‒463.
  11. Звонцов В. С., Фрид Н. М. Ранний палеозой Северо-восточного Предчингизья и Западного Тарбагатая // Изв. АН КазССР. Сер. геол. 1991. № 4. С. 23–42.
  12. Сальникова Е. Б., Яковлева С. З., Котов А. Б., Толмачева Е. В., Плоткина Ю. В., Козловский А. М., Ярмолюк В. В., Федосеенко А. М. Кристаллогенезис циркона щелочных гранитов и особенности его U-Pb датирования (на примере Хангайского магматического ареала) // Петрология. 2014. Т. 22. № 5. С. 482–495.
  13. Носова А. А., Возняк А. А., Богданова С. В., Савко К. А., Лебедева Н. М., Травин А. В., Юдин Д. С., Пейдж Л., Ларионов А. Н., Постников А. В. Раннекембрийский сиенитовый и монцонитовый магматизм на юго-востоке Восточно-Европейской платформы: петрогенезис и тектоническая обстановка формирования // Петрология. 2019. Т. 27. № 4. С. 357–400.
  14. Larionov A. N., Andreichev V. A., Gee D. G. The Vendian alkaline igneous suite of northern Timan: ion microprobe U-Pb zircon ages of gabbros and syenite the Vendian alkaline igneous suite of northern Timan: ion microprobe U-Pb zircon ages of gabbros and syenite // Geol. Soc. 2004. V. 30. P. 69–74.
  15. Стратиграфический кодекс России. Издание третье, исправленное и дополненное. СПб.: Издательство ВСЕГЕИ, 2019. 96 с.
  16. Cohen K. M., Finney S. C., Gibbard P. L., Fan J. X. The ICS International Chronostratigraphic Chart // Episodes. 2013 (updated 02. 2022). V. 36. № 3. P. 199–204.
  17. Koepke J., Berndt J., Feig S. T., Holtz F. The formation of SiO2-rich melts within the deep oceanic crust by hydrous partial melting of gabbros // Contrib. Mineral. Petrol. 2007. V. 153. P. 67–84.
  18. Pearce J. A., Harris N. B. W., Tindle A. G. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks // J. Petrol. 1984. V. 25. No. 4. P. 956–983.
  19. Forster H.-J., Tischendorf G., Trumbull R. B. An evaluation of the Rb vs (Y+Nb) discrimination diagram to infer tectonic setting of silicic igneous rocks // Lithos. 1997. V. 40. P. 261–293.
  20. Whalen J. B., Hildebrand R. S. Trace element discrimination of arc, slab failure, and A-type granitic rocks // Lithos. 2019. V. 348–349. Art. ID 105179.

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1. JATS XML
2. Fig. 1. Scheme of tectonic zoning of the Paleozoides of Kazakhstan and Northern Tien Shan. 1–5 – folded regions: 1 – Boshchekul-Chingiz, 2 – Kokchetav-Northern Tien Shan; 3, 4 – Ishim-Middle Tien Shan: 3 – Precambrian metamorphic complexes, 4 – Ediacaran-Lower Paleozoic terrigenous and siliceous-terrigenous strata, 5 – Dzungar-Balkhash (D-B) and Irtysh-Zaisan (I-Z); 6 – Upper Devonian-Permian superimposed basins; 7, 8 – volcano-plutonic belts: 7 – Late Paleozoic Balkhash-Ili, 8 – Devonian Kazakhstan; 9 – boundaries of folded regions, 10 – the largest late Paleozoic-early Mesozoic shifts. Regions of the Boshchekul-Chingiz folded region: S – Seletinsky, B – Boshchekulsky, Ch-T – Chingiz-Tarbagataisky.

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3. Fig. 2. (a) Scheme of the geological structure of the central part of the Chingiz-Tarbagatai region (Eastern Kazakhstan). 1 - Cenozoic deposits; 2 - Upper Devonian and Lower Carboniferous terrigenous-carbonate strata; 3 - Middle-Upper Ordovician terrigenous and volcanic strata; 4 - Upper Cambrian and Lower-Middle Ordovician volcanic and siliceous-terrigenous strata; 5 - Middle Cambrian-Middle Ordovician terrigenous-carbonate-siliceous strata; 6 - Lower-Middle Cambrian effusive rocks and tuffs of basic, intermediate and acidic composition; 7–10 – granitoid complexes: 7 – Saryshokinsky Early Permian, 8 – Chetsky Late Silurian, 9 – Chagansky Early–Middle Ordovician, 10 – Kan-Chingizsky Early–Middle Cambrian; 11 – faults: a – tectonic covers, b – others. (b) Scheme of the geological structure of the Koldenensky massif and its framework. Compiled using materials by M.A. Orenburgsky. 1–3 – Middle Cambrian – Middle Ordovician. Koldenensky sequence: 1 – sandy-siltstone member, 2 – siliceous member, 3 – terrigenous-carbonate member; 4 – Middle Cambrian, Amginsky stage; tuffs and lavas of intermediate and basic composition with limestone lenses; 5 – Lower Cambrian; effusive rocks and tuffs of basic, intermediate and acidic composition; 6, 7 – early–middle Cambrian. Kan-Chingiz complex: 6 – plagiogranites and granites, 7 – granodiorites; 8 – faults; 9 – locations of remains: a – trilobites, b – conodonts, c – inarticulate brachiopods, d – graptolites; 10 – location of sample collection for geochronological studies and its number.

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4. Fig. 3. Scheme of the geological structure of the Ust-Karasuysky massif and its framework. Compiled using materials by N.A. Klepikov. 1 - Cenozoic deposits; 2 - Upper Devonian and Lower Carboniferous limestones; 3 - Lower Silurian. Donenzhalskaya suite: sandstones, siltstones, limestones, effusive rocks of basic and acid composition; 4-6 - Lower Cambrian. Ayaguz series: 4 - rhyolites, rhyodacites, dacites, their tuffs and tuff-pechanics, 5 - gray cherts, 6 - basalts and trachybasalts; 7, 8 - Early-Middle Cambrian; Kan-Chingiz complex: 7 - plagiogranites, 8 - granodiorites, diorites and gabbro-diorites; 9 – location of sample collection for geochronological studies and its number. UK – Ust-Karasuysky massif.

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5. Fig. 4. Micrographs of zircon crystals taken with a TESCAN VEGA3 scanning electron microscope in secondary electron (I–IV) and cathodoluminescence (V–VIII) modes (a) and a concordia diagram (b) for granites of the Koldenensky massif (sample TS-10132). The point numbers on the diagram correspond to the serial numbers in Table 1

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6. Fig. 5. Micrographs of zircon crystals taken on a Camscan MX 2500S scanning electron microscope in cathodoluminescence mode (circles indicate dating areas) (a) and a concordia diagram (b) for plagiogranites of the Ust-Karasuysky massif (sample CHN-1740). The point numbers correspond to the serial numbers in Table 2.

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7. Fig. 6. Diagrams Ab–An–Or (a), Al2O3–SiO2 (b), TiO2–SiO2 (c) [17] for quartz diorites, granodiorites, plagiogranites and granites of the Koldenensky, Kan-Chingiz and Ust-Karasuysky massifs. 1–3 – quartz diorites, granodiorites, plagiogranites and granites of the massifs: 1 – Koldenensky, 2 – Kan-Chingiz; 3 – Ust-Karasuysky.

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8. Fig. 7. Chondrite-normalized REE distributions (a–c) and spidergrams of rare elements normalized to the composition of the primitive mantle (d–e) for quartz diorites, granodiorites, plagiogranites, and granites of the Koldenensky, Ust-Karasuysky, and Koldenensky massifs. For legend, see Fig. 6.

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9. Fig. 8. Rb–Y+Nb diagrams [18, 20] 1 – granitoids of ensimatic arcs; 2 – granitoids of continental arcs and arc–continent collision zones [19]. For other designations, see Fig. 6. Fields on the diagrams, granites: VAG – volcanic arcs, ORG – oceanic ridges, WPG – within-plate, syn-COLG – syn-collisional, post-COLG – post-collisional, arc – island-arc, slab failure – the emplacement of which is associated with the stage of separation of a part of the oceanic plate during accretion (collision) of island-arc structures to the continental margin and its thickening, A-type – A-type.

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