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Changes in the composition of upper pleistocene sediments in the center of the active hydrothermal system (Middle Valley, Juan de Fuca Ridge, Pacific Ocean)
- Authors: Kurnosov V.B.1, Konovalov Y.I.1, Galin K.R.1
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Affiliations:
- Geological Institute, Russian Academy of Sciences
- Issue: Vol 64, No 4 (2024)
- Pages: 662-677
- Section: Морская геология
- URL: https://journal-vniispk.ru/0030-1574/article/view/280471
- DOI: https://doi.org/10.31857/S0030157424040109
- EDN: https://elibrary.ru/PRIFLE
- ID: 280471
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Abstract
The article presents the results of studying the changeы in the chemical composition of the Upper Pleistocene sediments from the Hole ODP 1036A, drilled in the Middle Valley of the Juan de Fuca oceanic ridge at the Dead Dog hydrothermal field to a depth of 38.50 m, 9 m from the “black smoker” with a temperature of 268°C. The most significant changes in sediment chemistry occurred in the lower intervals of the hole. In the interval 20–30.70 m, the concentration of a large number of chemical elements increased and, accordingly, the hydrothermal fluid was depleted of these elements. In the interval 30.70–38.5 m, on the contrary, the concentration of most chemical elements decreased, which led to a significant enrichment of hydrothermal fluid with these elements.
About the authors
V. B. Kurnosov
Geological Institute, Russian Academy of Sciences
Author for correspondence.
Email: vic-kurnosov@rambler.ru
Russian Federation, Moscow
Yu. I. Konovalov
Geological Institute, Russian Academy of Sciences
Email: vic-kurnosov@rambler.ru
Russian Federation, Moscow
K. R. Galin
Geological Institute, Russian Academy of Sciences
Email: konsgalin@yandex.ru
Russian Federation, Moscow
References
- Карандашев В.К., Хвостиков В.А., Носенко С.Ю., Бурмий Ж.П. Использование высокообогащенных стабильных изотопов в массовом анализе образцов горных пород, грунтов, почв и донных отложений методом масс-спектрометрии с индуктивно связанной плазмой // Заводская лаборатория. Диагностика материалов. 2016. Т. 82. № 7. С. 6–15.
- Курносов В.Б., Коновалов Ю.И., Галин К.Р. Химический состав осадков и его изменения в центре современной гидротермальной системы в Срединной Долине океанического хребта Хуан де Фука, скважина 858B ODP // Литология и полезные ископаемые. 2023. № 1. С. 50–60.
- Сахаров Б.А., Курносов В.Б. Особенности образования глинистых минералов в осадках из центра гидротермальной системы, скважина 858В, хребет Хуан де Фука // Литология и полезные ископаемые. 2022. № 2. С. 181–204.
- Bischoff J.L., Seyfried W.E. Hydrothermal chemistry of seawater from 25° to 350°C // American Journal of Science. 1978. V. 278. P. 838–860.
- Buatier M.D., Karpoff A-M., Boni M, et al. Mineralogical and petrographic records of sediment-fluid interaction in the sedimentary sequence at Middle Valley, Juan de Fuca Ridge, Leg 139 // Proceedings of the Ocean Drilling Program, Scientific Results. 1994. V. 139. P. 133–154.
- Davis E.E., Mottl M.J., Fisher A.T. et al. Init. Repts. 1992. V. 139. College Station, TX (Ocean Drilling Program). 1026 p.
- Davis E.E., Villinger H. Tectonic and thermal structure of the Middle Valley sedimented rift, northern Juan de Fuca Ridge // Init. Repts. 1992. V. 139. College Station, TX (Ocean Drilling Program). P. 9–41.
- Fouquet Y., Zierenberg R.A., Miller D.J. et al. Proc. ODP. Init Repts. 1998. V. 169. College Station, TX (Ocean Drilling Program).
- Frü-Green G.L., McKenzie J.A., Boni M. et al. Stable isotope and geochemical record of convective hydrothermal circulation in the sedimentary sequence of Middle Valley, Juan de Fuca Ridge, Leg 139 // Proceedings of the Ocean Drilling Program, Scientific Results. 1994. V. 139. P. 291–306.
- Kristmannsdottir H. Clay minerals formed by hydrothermal alteration of basaltic rocks in Iceland geothermal fields // Geol. Fören Stockholm. 1975. V. 97. P. 289–292.
- Kristmanndottir H. Types of clay minerals in hydrothermally altered basaltic rocks, Reykjanes, Iceland // Jökull. 1976. V. 26. P. 30–39.
- Kristmannsdottir H. Alteration of basaltic rocks by hydrothermal activity at 100–300°C // Clay Conf., 1978 / Mortland M.M., Farmer V.C. (eds). Amsterdam: Elsevier, 1979. P. 359–367.
- Lackschewitz K.S.б Singer A. Formation and transformation of clay minerals in the hydrothermal deposits of Middle Valley, Juan de Fuca Ridge, ODP Leg 169 // Economic Geology. 2000. V. 95. P. 361–389.
- Seyfried W.E., Bischoff J.L. Low temperature basalt alteration by seawater: An experimental study at 70oC and 150oC // Geochimica et Cosmochimica Acta. 1979. V.43. № 12. P. 1937–1947.
- Zierenberg R.A., Fouquet Y., Miller D.J. et al. Proc. ODP, Sci. Results. 2000. V. 169. College Station TX (Ocean Drilling Program).
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