Mineralogical indicators of Holocene climate in sediments of the high-mountain Lake Sagan-Nur (East Sayan Mountains)

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

We present the first results of study of bottom sediments taken from the high-mountain freshwater Lake Sagan-Nur of glacial origin which is located on the Oka plateau (East Sayan Mountains). Comprehensive investigations of the mineral composition of Lake Sagan-Nur sediments accumulated during the last ~8600 cal. years were carried out. The research methods include X-ray diffractometry (XRD), infrared spectroscopy, laser grain size analysis, SiO2bio determination, AMS and 210Pb dating. The mineral composition of the bottom sediments is dominated by layered silicates, quartz and plagioclase; and also, the X-ray amorphous component consisting of biogenic silica and organic matter is constantly present. The method of mathematical modeling of XRD profiles was used for correct identification of the layered silicates. It was found that the clay mineral assemblage was stable comprising muscovite, chlorite, illite, mixed-layer illite-smectite and chlorite-smectite, kaolinite. At the same time, the quantitative ratios of these minerals and their structural characteristics were modified significantly in response to paleoenvironmental changes in the region. This feature reveals the potential of a number of phyllosilicates (illite, mixed-layer minerals) as indicators of paleoclimate in sedimentary sections of freshwater basins. The study of sediment composition and, especially, the precision mineralogical-crystallochemical analysis of layered silicates allowed us to reconstruct the paleolandscapes and climatic conditions of sediment accumulation for different Holocene sub-stages.

Авторлар туралы

E. Solotchina

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: solot@igm.nsc.ru
Ресей, Novosibirsk

P. Solotchin

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

Email: solot@igm.nsc.ru
Ресей, Novosibirsk

E. Bezrukova

A.P. Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences

Email: solot@igm.nsc.ru
Ресей, Irkutsk

A. Zhdanova

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

Email: solot@igm.nsc.ru
Ресей, Novosibirsk

A. Shchetnikov

A.P. Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences; Institute of the Earth’s Crust, Siberian Branch of the Russian Academy of Sciences

Email: solot@igm.nsc.ru
Ресей, Irkutsk; Irkutsk

I. Danilenko

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

Email: solot@igm.nsc.ru
Ресей, Novosibirsk

M. Kuzmin

A.P. Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences

Email: solot@igm.nsc.ru

Academician of the RAS

Ресей, Irkutsk

Әдебиет тізімі

  1. Страхов Н. М., Бродская Н. Г., Князева Л. М., Разживина А. Н., Ратеев М. А., Сапожников Д. Г., Шишова Е. С. Образование осадков в современных водоемах. М.: Изд-во АН СССР, 1954. 792 с.
  2. Безрукова Е. В., Щетников А. А., Кузьмин М. И., Шарова О. Г., Кулагина Н. В., Летунова П. П., Иванов Е. В., Крайнов М. А., Кербер Е. В., Филинов И. А., Левина О. В. Первые данные об изменении природной среды и климата Жомболокского вулканического района (Восточный Саян) в среднем-позднем голоцене // ДАН. 2016. Т. 468. № 3. С. 323–327.
  3. Shchetnikov A. A., Bezrukova E. V., Krivonogov S. K. Late Glacial to Holocene volcanism of Jom-Bolok Valley (East Sayan Mountains, Siberia) recorded by microtephra layers of the Lake Kaskadnoe-1 sediments // Journal of Asian Earth Science. 2019. V. 173. P. 291–303.
  4. Solotchin P. A., Kuzmin M. I., Solotchina E. P., Bezru kova E. V., Strakhovenko V. D., Shchetnikov A. A., Zhda nova A. N. New Data on Late Quaternary Sedimentation in High-Mountain Khikushka Lake (Eastern Sayan): The Role of Climatic and Volcanic Factors // Doklady Earth Sciences. 2021. V. 501. Iss. 1. P. 938–944.
  5. Vladimirov I. N., Vyrkin V. B., Ilyicheva E. A., Kobyl kin D. V., Pavlov M. V., Zehong Li. Natural Conditions and Ecological Potential of Geosystems in the Central Part of the Oka Plateau (Eastern Sayan) // Geography and Natural Resources. 2019. V. 40. № 3. P. 264–274.
  6. Щетников А. А. Озера Окинского плоскогорья // Геоморфология. 2002. № 3. С. 88–95.
  7. Безрукова Е. В., Решетова С. А., Волчатова Е. В., Кузьмин М. И. Первые реконструкции ландшафтно-климатических изменений в центральной части Окинского плато (Восточный Саян) в среднем-позднем голоцене // Доклады РАН. Науки о Земле. 2022. Т. 506. № 1. С. 104–110.
  8. Walker M., Head M. J., Lowe J., Berkelhammer M., Björck S., Cheng H., Cwynar L. C., Fisher D., Gki nis V., Long A., Newnham R., Rasmussen S. O., Weiss H. Subdividing the Holocene Series/Epoch: formalization of stages/ages and subseries/subepochs, and designation of GSSPs and auxiliary stratotypes // Journal of Quaternary Science. 2019. V. 34. № 3. P. 173–186.
  9. Солотчина Э. П. Структурный типоморфизм глинистых минералов осадочных разрезов и кор выветривания. Новосибирск: Академ. изд-во “Гео”, 2009. 234 с.
  10. Walker M., Head M. J., Berkelhammer M., Björck S., Cheng H., Cwynar L., Fisher D., Gkinis V., Long A., Lowe J., Newnham R. Rasmussen S. O., Weiss H. Formal ratification of the subdivision of the Holocene Series/Epoch (Quaternary System/Period): Two new Global Boundary Stratotype Sections and Points (GSSPs) and three new stages/subseries // Episodes. 2018. V. 41. № 4. P. 213–223.
  11. Chamley H. Clay Sedimentology. Springer-Verlag, 1989. 623 p.
  12. Righi D., Meunier A. Origin of clays by rock weathering and soil formation // Origin and mineralogy of clays. Velde B. (Ed.). Springer-Verlag, 1995a. P. 43–157.
  13. Solotchina E. P., Prokopenko A. A., Kuzmin M. I., So lotchin P. A., Zhdanova A. N. Climate signals in se diment mineralogy of Lake Baikal and Lake Hovsgol during the LGM-Holocene transition and the 1-Ma carbonate record from the HDP-04 drill core // Quatern. Intern. 2009. V. 205. P. 38–52.
  14. Bailey S. W., Brindley G. W., Fanning D. S., Kodama H. Martin R. T. Report of the Clay Minerals Society Nomenclature Committee for 1982 and 1983 // Clays and Clay Minerals. 1984. V. 32. P. 239–240.
  15. Дриц В. А., Коссовская А. Г. Глинистые минералы: слюды, хлориты. М.: Наука, 1991. 175 с.
  16. Marcott Sh. A., Shakun J. D., Clark P. U., Mix A. C. Re construction of Regional and Global Temperature for the Past 11, 300 Years // Science. 2013. V. 339. P. 1198–1201.

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