New Data on the Ages of the Basement of the Central Kamchatka Depression and the Pedestal of the Kvechovo Group of Volcanoes

Cover Page

Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

A unique feature of the Kamchatka Peninsula is the Central Kamchatka Depression (CKD) stretching 400 km along the peninsula. Existing geodynamic models connect the formation of the CKD with the extension of the East Kamchatka toward the Pacific Ocean due to the slab rollback. However, no radiometric ages of the CKD formation have known yet, thus making it impossible to directly link the emergence of the CKD to the stages of Kamchatka tectonic evolution of and to the recent tectonic deformations. The paper presents the results of XRF analysis and K-Ar dating of lavas from the Kl-1 borehole near the Klyuchi settlement. Samples from the depth interval of 50–475 m (ages 0.72 ± 0.05, 1.54 ± 0.15 and 1.46 ± 0.08 M a) correspond to medium-K basalts and high-K trachyandesibasalts, likely similar to the rocks exposed at the base of the Kliuchevskaia Group. Still, these studied rocks are much older than any other dated rocks of the Kliuchevskaia Group (dates does not exceed 0.3 Ma). Below the stratigraphic unconformity at a depth of 905 m, a single date of 3.5 ± 0.4 Ma was obtained, which coincide with the end of accretion of the Eastern Peninsulas, which caused the transverse compression across the peninsula. Thus, the time of CDD emergence likely falls within the range of 1.5–3.5 Ma.

Full Text

Restricted Access

About the authors

E. A. Zelenin

Geological Institute of the Russian Academy of Sciences

Author for correspondence.
Email: egorzelenin@mail.ru
Russian Federation, Moscow

N. V. Gorbach

Institute of Volcanology and Seismology of the Far Eastern Branch of the Russian Academy of Sciences

Email: egorzelenin@mail.ru
Russian Federation, Petropavlovsk-Kamchatsky

S. A. Sokolov

Geological Institute of the Russian Academy of Sciences

Email: egorzelenin@mail.ru
Russian Federation, Moscow

V. A. Lebedev

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences

Email: egorzelenin@mail.ru
Russian Federation, Moscow

References

  1. Kozhurin A., Acocella V., Kyle P. R., Lagmay F. M., Melekestsev I. V., Ponomareva V., Rust D., Tibaldi A., Tunesi A., Corazzato C., Rovida A., Sakharov A., Tengonciang A., Uy H. Trenching studies of active faults in Kamchatka, eastern Russia: palaeoseismic, tectonic and hazard implications // Tectonophysics. 2006. V. 417 № 3. P. 285–304.
  2. Константиновская Е. А. Геодинамика коллизии островная дуга – континент на западной окраине Тихого океана // Геотектоника. 1999. № 5. С. 15–34.
  3. Авдейко Г. П., Палуева А. А., Хлебородова О. А. Геодинамические условия вулканизма и магмообразования Курило-Камчатской островодужной системы // Петрология. 2006. Т. 14. № 3. С. 249–267.
  4. Lander A. V., Shapiro M. N. The origin of the modern Kamchatka subduction zone // Volcanism and Subduction: The Kamchatka region. 2007. P. 57–64.
  5. Цуканов Н. В., Дозорова К. А. Возраст и время эксгумации осадочных комплексов Восточной Камчатки по данным трекового датирования апатита // Вестник Камчатской региональной ассоциации “Учебно-научный центр”. Серия: Науки о Земле. 2022. Вып. 53. № 1. С. 76–88.
  6. Кожурин А. И., Пинегина Т. К., Пономарева В. В., Зеленин Е. А., Михайлюкова П. Г. Скорость коллизионных деформаций Камчатского полуострова (Камчатка) // Геотектоника. 2014. № 2. С. 42‒60.
  7. Kozhurin A. I., Zelenin E. A. An extending island arc: the case of Kamchatka // Tectonophysics. 2017. V. 706–707. P. 91–102.
  8. Amosova A. A., Panteeva S. V., Chubarov V. M., Finkelshtein A. L. Determination of major elements by wavelength-dispersive x-ray fluorescence spectrometry and trace elements by inductively coupled plasma mass spectrometry in igneous rocks from the same fused sample (110 mg) // Spectrochimica Acta. P art B : Atomic Spectroscopy. 2016. 122. 62–68.
  9. Ермаков В. А. Формационное расчленение четвертичных вулканических пород. М.: Недра, 1977. 225 с.
  10. Флеров Г. Б., Чурикова Т. Г., Ананьев В. В. Вулканический массив Плоских Сопок: геология, петрохимия, минералогия и петрогенезис пород (Ключевская группа вулканов, Камчатка) // Вулканология и сейсмология. 2017. № 4. С. 30–47.
  11. Хасанов Ш. Г., Литвинов А. Ф., Марковский Б. А. и др. Объяснительная записка. – Государственная геологическая карта Российской Федерации масштаба 1:200000. Издание второе. Серия Хангарская. Лист N-57-IX (Мильково). Объяснительная записка. М.: МФ ВСЕГЕИ, 2015. 143 с.
  12. Churikova T. G., Gordeychik B. N., Iwamori H., Nakamura H., Ishizuka O., Nishizawa T., Haraguchi S., Miyazaki T., Vaglarov B. S. Petrological and geochemical evolution of the Tolbachik volcanic massif, Kamchatka, Russia // Journal of Volcanology and Geothermal Research. 2015. V. 307. P. 156–181.
  13. Calkins J. 40Ar/ 39Ar geochronology of Khapitsa plateau and Studyonaya River basalts and basaltic andesites in Central Kamchatka Depression, Kamchatka, Russia / Linkages among tectonics, seismicity, magma genesis, and eruption in volcanic arcs. IV International Biennial Workshop on Subduction Processes emphasizing the Japan-Kurile-Kamchatka-Aleutian Arcs. Petropavlovsk-Kamchatsky. A ugust 21–27, 2004. Petropavlovsk-Kamchatsky: Institute of Volcanology and Seismology FEB RAS, 2004. 333 p.
  14. Eрмаков В. A., Баженова Г. Н. Первые результаты геохронологических U-Pb-исследований пород вулкана Николка в Центральной Камчатской депрессии // ДАН. 2018. Т. 480. № 2. C. 184 – 188.
  15. Толстых М. Л., Бабанский А. Д., Смирнова М. Д., Певзнер М. М., Лебедев В. А., Ларионова Ю. О., Кущева Ю. В., Парфенов А. В. Вулканизм начальной фазы заложения северного сегмента субдукции тихоокеанской плиты (полуостров Камчатка, хребет Кумроч) // Вулканология и сейсмология. 2023. № 2. С. 52 – 68.
  16. Озорнина С. П. Диатомовые водоросли (B acillariophyta) древнеозерных отложений Центральной Камчатской депрессии // Вестник Камчатского государственного технического университета. 2011. Вып. 17. С. 84–100.
  17. Ponomareva V. V., Churikova T., Melekestsev I. V. et al. Late Pleistocene‐Holocene Volcanism on the Kamchatka Peninsula, Northwest Pacific Region. Volcanism and Subduction: the Kamchatka Region // American Geophysical Union Geophysical Monograph. Series. 2007. 172. P. 165–198.

Supplementary files

Supplementary Files
Action
1. JATS XML
Download
2. Fig. 1. Position of the Central Kamchatka Depression (CKD) on the map of the Kamchatka Peninsula. The yellow fill shows the distribution of Quaternary sediments within the CKD and other large grabens [1], the red fill shows the position of volcanic belts. Black lines show the largest discharge zones. The square shows the position of well KL-1

Download (46KB)
Indexing metadata
3. Fig. 2. Lithological column of well KL-1. 1 - sandy-boulder bed, 2 - 4 - lavas (2 - basalts, 3 - andesibasalts, 4 - andesites), 5-6 - tuffs (5 - basic, 6 - medium composition), 7 - sampling points for K-Ar dating (sample indices and age in Ma are signed)

Download (35KB)
Indexing metadata
4. Fig. 3. Estimates of the thickness of the sedimentary filling of the CKD (1 - according to [11], 2 - according to [16], 3 - borehole Kl-1) and the age of the volcanics reaching the day surface (4 - Upper Pleistocene - Holocene [17], 5 - Middle Pleistocene and older, including the points of absolute age determination in million years [12 - 15]; 6 - distribution of Quaternary sediments within the CKD)

Download (62KB)
Indexing metadata

Copyright (c) 2024 Russian Academy of Sciences