The jurassic through early cretaceous magmatic belt of the southern margin of Chukotka terrane (northeastern Russia): new zircon U–Pb age data

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Abstract

The U-Pb dating of zircons from igneous rocks of the Central Chukotka area (left bank of the Amguema River) indicated that two granitic batholiths (Telekai and Chanuan massives) and the series of smaller plutons have been formed during 143–127 Ma time span. This age is substantially older than that determined for the greater part of the North Chukotka's granites (109–100 Ma). Both new and published isotopic age data infer that there was a large subduction related magmatic belt at the margin of the Chukotka continental block – at least, during the Late Jurassic and Neocomian time. Then, the newly discovered Early Jurassic U-Pb ages of Chukotka's igneous complexes (ca. 196 Ma) imply much longer duration of magmatic activity at the margin of the Chukotka microcontinent. The Albian granitic plutons of the observed area (106–100 Ma) were controlled by a different fault system, and they are probably related to a separate magmatic event.

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About the authors

P. L. Tikhomirov

O.Yu. Schmidt Institute of Physics of the Earth, Russian Academy of Sciences; N.A. Shilo Northeast Interdisciplinary Scientific Research Institute

Author for correspondence.
Email: petr_tikhomirov@mail.ru
Russian Federation, Moscow; Magadan

М. S. Gulpa

“Northeastern Economic Geology Association” Joint Stock Company

Email: petr_tikhomirov@mail.ru
Russian Federation, Magadan

References

  1. Парфенов Л. М., Ноклеберг У. Дж., Монгер Дж. У. Х., Нортон И. О., Стоун Д. Б., Фуджита К., Ханчук А. И., Шолл Д. У. Формирование коллажа террейнов орогенных поясов севера тихоокеанского обрамления // Геология и геофизика. 1999. Т. 40. № 11. С. 1563–1574.
  2. Соколов С. Д. Очерки тектоники Северо-Востока Азии // Геотектоника. 2010. № 6. С. 60–78.
  3. Kuzmichev A. B. Where does the South Anyui suture go in the New Siberian islands and Laptev Sea?: Implications for the Amerasia basin origin // Tectonophysics. 2009. V. 463. P. 86–108.
  4. Miller E. L., Meisling K. E., Akinin V. V., Brumley K., Coakley B. J., Gottlieb E. S., Hoiland C. W., O’Brien T. M., Soboleva A., Toro J. Circum-Arctic Lithosphere Evolution (CALE) Transect C: Displacement of the Arctic Alaska–Chukotka microplate towards the Pacific during opening of the Amerasia Basin of the Arctic. London: Geological Society (Special Publications), 2018. V. 460. No. 1. P. 57–120.
  5. Моисеев А. В., Маскаев М. В., Ульянов Д. К., Соколов С. Д., Беляцкий Б. В. Кульпольнейский вулканический комплекс Южно-Анюйской сутуры (Западная Чукотка): состав, возраст и палеотектонические интерпретации // Доклады РАН. Науки о Земле. 2021. Т. 499. № 1. С. 42–48.
  6. Ватрушкина Е. В., Тучкова М. И., Соколов С. Д. Позднеюрский–раннемеловой надсубдукционный вулканизм Чукотского террейна (Арктический регион, Россия) // Геотектоника. 2019. № 6. С. 78–91.
  7. Amato J. M., Toro J., Akinin V. V., Hampton B. A., Salnikov A. S., Tuchkova M. I. Tectonic evolution of the Mesozoic South Anyui suture zone, eastern Russia: A critical component of paleogeographic reconstructions of the Arctic region // Geosphere. 2015. V. 11(5). P. 1530–1564.
  8. Tikhomirov P. L., Kalinina E. A., Kobayashi K., Nakamura E. Late Mesozoic silicic magmatism of the North Chukotka area (NE Russia): age, magma sources, and geodynamic implications // Lithos. 2008. V. 105. P. 329–346.
  9. Лучицкая М. В., Соколов С. Д., Моисеев А. В. Этапы позднемезозойского гранитоидного магматизма Чукотки (Северо-Восток России) // Доклады РАН. Науки о Земле. 2013. Т. 450. № 1. С. 1–6.
  10. Pease V., Miller E., Wyld S., Sokolov S., Akinin V., Wright J. U–Pb zircon geochronology of Cretaceous arc magmatism in eastern Chukotka, NE Russia, with implications for Pacific plate subduction and the opening of the Amerasia Basin. London: Geological Society (Special Publications), 2017. V. 460. P. 159–182.
  11. Тихомиров П. Л. Меловой окраинно-континентальный магматизм Северо-Востока Азии и вопросы генезиса крупнейших фанерозойских провинций кремнекислого вулканизма. М.: ГЕОС, 2020. 376 с.
  12. Акинин В. В., Миллер Э. Л. Эволюция известково-щелочных магм Охотско-Чукотского вулканогенного пояса // Петрология. 2011. Т. 19. № 2. С. 1–42.
  13. Варламова В. А., Малышева Г. М., Вяткин Б. В., Звизда Т. В., Жуков В. А., Коваленко А. В., Казинский В. А. Информационный отчет по незавершенным работам по объекту “Создание цифрового комплекта карт геологического содержания масштаба 1:500 000 территории Чукотского АО” (Мониторинг региональных геологических исследований в масштабе 1:500 000). Анадырь: ФГУГП “Георегион”, 2004.
  14. Tikhomirov P. L., Luchitskaya M. V., Prokofiev V. Yu., Akinin V. V., Miller E. L., Isaeva E. P., Palechek T. N., Starikova E. V., Boldyreva A. I., Wiegand B. Evolution of Aptian and Albian magmatism of western and northern Chukotka (northeast Russia) based on zircon U–Pb geochronology and rock geochemistry // International Geology Review. 2024. V. 66. Issue 2. P. 607–632.
  15. Schuth S., Gornyy V. I., Berndt J., Shevchenko S. S., Karpuzov A. F., Mansfeldt T. Early Proterozoic U–Pb Zircon Ages from Basement Gneiss at the Solovetsky Archipelago, White Sea, Russia // International Journal of Geosciences. 2012. V. 3. P. 289–296.
  16. Тихомиров П. Л., Лучицкая М. В., Шац А. Л. Возраст гранитоидных плутонов Северной Чукотки: состояние проблемы и новые SHRIMP U–Pb датировки цирконов // Доклады РА Н. Науки о Земле. 2011. Т. 440. № 4. C. 507–510.
  17. Akinin V. V., Miller E. L., Toro J., Prokopiev A. V., Gottlieb E. S., Pearcey S., Polzunenkov G. O., Trunilina V. A. Episodicity and the dance of late Mesozoic magmatism and deformation along the northern circum-Pacific margin: North-eastern Russia to the Cordillera // Earth-Science Reviews. 2020. V. 208. 103272.
  18. Тарасенко А. А. Государственная геологическая карта Российской Федерации масштаба 1:200 000. Издание второе. Серия Пыкарваамская. Лист Q-1-VII, VIII (Амгуэма). Объяснительная записка. СПб., 2023.
  19. Гульпа И. В. Государственная геологическая карта Российской Федерации масштаба 1:200 000. Издание второе. Серия Пыкарваамская. Лист Q-1-XXI, XXII (устье р. Чевтакан). Объяснительная записка. СПб., 2020.
  20. Тихомиров П. Л., Лебедев И. Е., Пасенко А. М., Люилье Ф., Алексеев Д. В., Павлов В. Э. “Верхние базальты” Восточно-Чукотского сегмента Охотско-Чукотского пояса: продольная миграция вулканической активности или наложение позднего магматического события? // Доклады РА Н. Науки о Земле. 2021. Т. 501. № 2. С. 47–52.

Supplementary files

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2. Fig. 1. Scheme of the geological structure of Central Chukotka (left bank of the Amguema River, upper reaches of the Palyavaam, Pegtymel, Ekiatap, Bol. Osinovaya rivers). Compiled based on materials from [2], with modifications. The age of geological complexes has been corrected taking into account the data of this publication, as well as data from [4, 5, 9, 10, 19]. 1 - crystalline schists, gneisses, marbled limestones of the Devonian - Carboniferous; 2 - sandstones, siltstones and mudstones of the Upper Permian and Triassic; 3 - terrigenous-clastic and volcanomictic sedimentary rocks of the Upper Jurassic - Neocomian; 4 - volcanics of the Upper Jurassic - Neocomian (mainly tuffs and ignimbrites of rhyolites); 5 - terrigenous-clastic and volcanomictic sedimentary rocks of the Albian; 6 – volcanics of the OChVB (from basalts to rhyolites; within the considered area – Cenomanian-Campanian age), 7 – Quaternary deposits; 8–12 – intrusive formations: 8 – Early-Middle Triassic gabbroids, 9 – Early Jurassic gabbroids, 10 – Late Jurassic(?)-Early Cretaceous (pre-Albian) granitoids, 11 – Albian granitoids, 12 – Late Cretaceous granitoids; 13 – faults; 14 – sampling points for U–Pb dating of zircon and the obtained age values ​​(±2σ), rounded to whole million years (a – data from this publication, b – data from [5, 10, 12, 19]). The dotted line shows the boundaries of sheet Q-60-V, VI. Letters in squares – Telekaisky (T) and Chanuansky (Ch) batholiths. The inset shows the outcrops of the Chukotka Terrane complexes (gray fill), OChVB and South Anyui zone; the thick line is the contours of the area under consideration

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3. Fig. 2. Results of U–Pb dating of igneous rock samples from the left bank of the Amguema River (sheet Q-60-V, VI). The names of the rocks and the coordinates of the sampling points are given in the table. The size of the error ellipses corresponds to 2σ. The dotted line shows the ellipses for point analyses excluded from the age calculation of the samples.

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4. Fig. 3. U–Pb age diagram of igneous rocks from the left bank of the Amguema River. Horizontal segments represent the error of determination (2σ). Black filled symbols represent plutonic rocks, unfilled symbols represent volcanics. Colored filled symbols indicate the time intervals of the formation of the Palyavaam-Pegtymel igneous area [10, 19], the Chaun igneous province [20], and the East Chukotka segment of the OChVB [10, 11].

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Presented by Academician of the RAS K.E. Degtyarev April 27, 2024


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