Pliocene-Quaternary Volcanism in the Interfluve of the Kozyrevka and Malaya Romanovka Rivers (Sredinny Range of Kamchatka): Age and Composition of the Rocks

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Рұқсат ақылы немесе тек жазылушылар үшін

Аннотация

The isotopic K–Ar age of volcanoes in interfluve of the Kozyrevka and Malaya Romanovka rivers in the Sredinny Range of Kamchatka has been established for the first time. Six stages of activation have been identified: the termination of the Miocene (5.8–5.5 Ma), the Early Pliocene (4.9–4.5 Ma), the Middle Eopleistocene (1.5–1.4 Ma), the Late Eopleistocene (1.1–1.0 Ma), the Middle Pleistocene (0.4–0.3 Ma). No more recent volcanic activity has been recorded in the area. It has been established that the beginning of Quaternary volcanic activity was preceded by a period of rest lasting about 3 million years. It has been established for the first time that the formation of a large fault of the upper strike occurred at the northern foot of the Romanovka volcano no earlier than 0.4–0.3 million years ago. The analysis of K–Ar isotopic dates allowed us to suggest that the activation stages of Quaternary volcanic activity at ~1.5 and ~0.3 Ma had a regional character. The regional activity is less clearly traced for the stages of ~1.0 and ~0.6 Ma. Over the last six Ma, rocks ranging from basalts to dacites have erupted in the interfluve. It was found that extensive covers and large lava structures are composed of rocks of medium and acidic composition, while basalts are confined to small monogenic centers. In general, the studied volcanics are chemically similar to the Late Miocene-Quaternary rocks of the southern part of the Sredinny Range. The results of our work fundamentally change the previously existing estimates of the age of volcanoes in the studied area of the Sredinny Range. It is suggested that there were no significant glaciations in the interfluve of Kozyrevka and Malaya Romanovka at least in the Quaternary.

Авторлар туралы

M. Pevzner

Geological Institute RAS

Email: m_pevzner@mail.ru
Pyzhevsky lane, 7, bld. 1, Moscow, 119017 Russia

M. Tolstykh

Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences

Kosygina str., 19, Moscow, 119334 Russia

V. Lebedev

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry RAS

Staromonetny lane, 35, Moscow, 119017 Russia

A. Babansky

Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry RAS

Staromonetny lane, 35, Moscow, 119017 Russia

Әдебиет тізімі

  1. Волынец А.О., Певзнер М.М., Лебедев В.А. и др. Этапы активизации вулканизма на юго-восточном фланге Срединного хребта Камчатки: возраст, геохимия и изотопные характеристики пород массивов гор Ахтанг и Костина // Геология и геофизика. 2020. Т. 61. № 7. С. 862–878. https://doi.org/10.15372/GiG2019158
  2. Волынец А.О., Певзнер М.М., Толстых М.Л., Бабанский А.Д. Вулканизм южной части Срединного хребта Камчатки в неоген-четвертичное время // Геология и геофизика. 2018. Т. 59. № 12. С. 1979–1996. https://doi.org/10.15372/GiG20181204
  3. Государственная геологическая карта РФ масштаба 1:200000. 2-е изд. Серия Западно-Камчатская. Лист N-57-III (Эссо). Объяснительная записка. СПб.: ВСЕГЕИ, 2008. 188 с.
  4. Зеленин Е.А., Гарипова С.Т. Активная разломная тектоника Срединного хребта, п-ов Камчатка // Вестник КРАУНЦ. Науки о Земле. 2022. № 1. Вып. 53. С. 104–112. https://doi.org/10.31431/1816-5524-2022-1-53-104-112
  5. Лебедев В.А., Чернышев И.В., Чугаев А.В. и др. Геохронология извержений и источники вещества материнских магм вулкана Эльбрус (Большой Кавказ): результаты K–Ar и Sr–Nd–Pb изотопных исследований // Геохимия. 2010. № 1. С. 45–73.
  6. Огородов Н.В., Кожемяка Н.Н., Важеевская А.А., Огородова А.С. Вулканы и четвертичный вулканизм Срединного хребта Камчатки. М.: Наука, 1972. 192 с.
  7. Певзнер М.М., Лебедев В.А., Волынец А.О. и др. Возраст стратовулканов Ичинский и Хангар (Срединный хребет, Камчатка) // Доклады Академии наук. 2019. Т. 489. № 6. С. 616–620. https://doi.org/ 10.31857/S0869-56524896616-620
  8. Певзнер М.М., Волынец А.О., Лебедев В.А. Седанкинский Дол (Срединный хребет Камчатки): изотопный K–Ar возраст вулканов, взаимоотношение вулканических и ледниковых форм рельефа // Вулканология и сейсмология. 2021. № 5. С. 25–34. https://doi.org/10.31857/S0203030621040039
  9. Певзнер М.М., Лебедев В.А., Кущева Ю.В. и др. Раннечетвертичный возраст заключительного этапа вулканической активизации в центральной части Срединного хребта Камчатки (данные K–Ar метода) // Доклады Академии наук. 2020. Т. 490. № 1. С. 3–6. https://doi.org/10.31857/S2686739720010089
  10. Юдович Я.Э., Кетрис М.П., Рыбина Н.В. Геохимия титана. Сыктывкар: ИГ Коми НЦ УрО РАН, 2018. 432 с.
  11. Brophy J.G. A study of rare earth element (REE) – SiO2 variations in felsic liquids generated by basalt fractionation and amphibolite melting: a potential test for discriminating between the two different // Contrib. Mineral. Petrol. 2008. V. 156. P. 337–357.
  12. Calkins J. 40Ar/39Ar geochronology of Khapitsa Plateau and Studyonaya River basalts and basaltic andesites in Central Kamchatka Depression, Kamchatka, Russia // Abstr. IV JKASP Int. workshop. 2004. http://kiska.giseis.alaska.edu/kasp/kasp04/abstracts/abstracts.htm
  13. Churikova T.G., Gordeychik B.N., Iwamori H. et al. Petrological and geochemical evolution of the Tolbachik volcanic massif, Kamchatka, Russia // J. Volcanol. Geotherm. Res. 2015. V. 307. P. 156–181. https://doi.org/10.1016/J.JVOLGEORES.2015.10.026
  14. Igneous Rocks: A Classification and Glossary of Terms: Recommendations of the International Union of Geological Sciences Subcommission on the Systematics of Igneous Rocks. 2nd ed. / Chief editor R.W. Le Maitre. N. Y.: Cambridge University Press, 2002. 236 p.
  15. Nishizawa T., Nakamura H., Churikova T. et al. Genesis of ultra-high-Ni olivine in high-Mg andesite lava triggered by seamount subduction // Sci. Rep. 2017. V. 7(11515). P. 1–11. https://doi.org/10.1038/s41598-017-10276-3
  16. Steiger R.H., Jäger H. Subcommision on Geochronology: convention on the use of decay constants in geo- and cosmochronology // Earth and Planet. Sсi. Lett. 1977. V. 36. № 3. P. 359–362.
  17. Sun S.-S., McDonough W.F. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Magmatism in the ocean basins // Geol. Soc. London. Special Publ. / Eds A.D. Saunders, M.J. Norry. 1989. № 42. P. 313–345. https://doi.org/10.1144/GSL.SP.1989.042.01.19
  18. Volynets A.O., Nekrylov N., Gorbach N. et al. Geochemical diversity and tectonic relationships in monogenetic volcanic fields: A case study of the Sredinny Range, Kamchatka // Lithos. 2023. V. 456–457. 107306. https://doi.org/10.1016/j.lithos.2023.107306
  19. Volynets A.O., Nekrylov N., Kostitsyn Y. et al. Deciphering mantle source heterogeneity in space and time in the back-arc of a contemporary subduction system: A regional study of the Sredinny Range, Kamchatka // Lithos. 2024. V. 476–477. 107605. https://doi.org/10.1016/j.lithos.2024.107605
  20. Zelenin E.A., Gorbach N.V., Sokolov S.A., Lebedev V.A. New Data on Ages of the Basement of the Central Kamchatka Depression and the Base of the Klyuchevskaya Group of Volcanoes // Doklady Earth Sciences. 2024. V. 518. Part 2. P. 1585–1589. https://doi.org/10.1134/S1028334X24602669

Қосымша файлдар

Қосымша файлдар
Әрекет
1. JATS XML

© Russian Academy of Sciences, 2025