“…Meanwhile, their distribution pattern and total REY content are in good agreement with the sediments of the southern part of the Novaya Zemlya Trough (Rusakov et al, 2018), which is a natural trap for sedimentary material carried by the eastern glaciers of Novaya Zemlya. Figure 7.Range of composition values for rare earth elements and yttrium (REY) content in sediments of core AMK-5248 (highlighted darker; data from this work), as well as the clayey and clayey silty surface (0–2 cm) bottom sediments of Kara Sea and Novaya Zemlya Trough (highlighted lighter; Rusakov et al, 2018), normalized to the composition of the North American shale composite (NASC; Gromet et al, 1984). The curve of average composition of core AMK-5248 is shown as a solid line.…”
Section: Resultssupporting
confidence: 72%
“…7, Supplementary Table 5). Meanwhile, their distribution pattern and total REY content are in good agreement with the sediments of the southern part of the Novaya Zemlya Trough (Rusakov et al, 2018), which is a natural trap for sedimentary material carried by the eastern glaciers of Novaya Zemlya.…”
Section: Rare Earth Elements and Yttriumsupporting
confidence: 57%
“…Range of composition values for rare earth elements and yttrium (REY) content in sediments of core AMK-5248 (highlighted darker; data from this work), as well as the clayey and clayey silty surface (0–2 cm) bottom sediments of Kara Sea and Novaya Zemlya Trough (highlighted lighter; Rusakov et al, 2018), normalized to the composition of the North American shale composite (NASC; Gromet et al, 1984). The curve of average composition of core AMK-5248 is shown as a solid line.…”
Section: Resultsmentioning
confidence: 93%
“…Statistical analysis revealed more variables than those used to establish granulometric types and included five sand-sized and two silt-sized fractions (Supplementary Table 2). According to a previous study, subdivision of the core sequence based on statistical clustering is more accurate than that based solely on the types (Rusakov et al, 2017, 2018). Factor analysis of grain-size data revealed the two main significant factors that explain the effect of different fractions on the composition (Fig.…”
Section: Resultsmentioning
confidence: 98%
“…The use of trace elements is limited, as most of the variation in their content is close to the statistical error of chemical analysis (Supplementary Table 4), and variations in the content of major elements were only slightly higher: SiO 2 (55.2-56.4 wt%), Al 2 O 3 (16.2-17.4 wt %), Fe 2 O 3 (7.4-7.9 wt%), MgO (2.71-3.53 wt%), and CaO (1.97-2.88 wt%). For comparison, in the Kara Sea sediments, the major and trace element content varies within 40% (Rusakov et al, 2017(Rusakov et al, , 2018. To derive the relevant information from such a homogeneous geochemical data set, we applied methods of mathematical statistics (Davis, 1990), which allowed us to unravel the "hidden" relationships between chemical elements inaccessible to other geochemical analysis methods.…”
In this study, we reconstructed for the first time the recent 1000-yr-long history of Goluboi tidewater glacier at the eastern side of the Novaya Zemlya, Kara Sea, based on accelerator mass spectrometry 14C dating with higher-resolution age control on the basis of 210Pb and 137Cs radionuclides for the time period after AD 1885, using multiproxy analyses (lithology, mineralogy, and geochemistry) of proximal glaciomarine sediments from the Oga Fjord. Against the background of the active glacial dynamics and the intense meltwater runoff until the end of the sixteenth century, there was a sudden cooling at the beginning of the seventeenth century, which manifested itself in a significant decrease in the sedimentation rates. In time, this event coincides with the strongest volcanic eruption, AD 1600, in South America (in Peru) in the history of human settlement of the continent, which may have plunged the globe into cold climate chaos (Witze, 2008), and caused the Great Famine, AD 1601 to AD 1603, in Russia. The synchronicity of the described events may be an additional fact confirming the global impact of the eruption on the climate of our planet.
“…Meanwhile, their distribution pattern and total REY content are in good agreement with the sediments of the southern part of the Novaya Zemlya Trough (Rusakov et al, 2018), which is a natural trap for sedimentary material carried by the eastern glaciers of Novaya Zemlya. Figure 7.Range of composition values for rare earth elements and yttrium (REY) content in sediments of core AMK-5248 (highlighted darker; data from this work), as well as the clayey and clayey silty surface (0–2 cm) bottom sediments of Kara Sea and Novaya Zemlya Trough (highlighted lighter; Rusakov et al, 2018), normalized to the composition of the North American shale composite (NASC; Gromet et al, 1984). The curve of average composition of core AMK-5248 is shown as a solid line.…”
Section: Resultssupporting
confidence: 72%
“…7, Supplementary Table 5). Meanwhile, their distribution pattern and total REY content are in good agreement with the sediments of the southern part of the Novaya Zemlya Trough (Rusakov et al, 2018), which is a natural trap for sedimentary material carried by the eastern glaciers of Novaya Zemlya.…”
Section: Rare Earth Elements and Yttriumsupporting
confidence: 57%
“…Range of composition values for rare earth elements and yttrium (REY) content in sediments of core AMK-5248 (highlighted darker; data from this work), as well as the clayey and clayey silty surface (0–2 cm) bottom sediments of Kara Sea and Novaya Zemlya Trough (highlighted lighter; Rusakov et al, 2018), normalized to the composition of the North American shale composite (NASC; Gromet et al, 1984). The curve of average composition of core AMK-5248 is shown as a solid line.…”
Section: Resultsmentioning
confidence: 93%
“…Statistical analysis revealed more variables than those used to establish granulometric types and included five sand-sized and two silt-sized fractions (Supplementary Table 2). According to a previous study, subdivision of the core sequence based on statistical clustering is more accurate than that based solely on the types (Rusakov et al, 2017, 2018). Factor analysis of grain-size data revealed the two main significant factors that explain the effect of different fractions on the composition (Fig.…”
Section: Resultsmentioning
confidence: 98%
“…The use of trace elements is limited, as most of the variation in their content is close to the statistical error of chemical analysis (Supplementary Table 4), and variations in the content of major elements were only slightly higher: SiO 2 (55.2-56.4 wt%), Al 2 O 3 (16.2-17.4 wt %), Fe 2 O 3 (7.4-7.9 wt%), MgO (2.71-3.53 wt%), and CaO (1.97-2.88 wt%). For comparison, in the Kara Sea sediments, the major and trace element content varies within 40% (Rusakov et al, 2017(Rusakov et al, , 2018. To derive the relevant information from such a homogeneous geochemical data set, we applied methods of mathematical statistics (Davis, 1990), which allowed us to unravel the "hidden" relationships between chemical elements inaccessible to other geochemical analysis methods.…”
In this study, we reconstructed for the first time the recent 1000-yr-long history of Goluboi tidewater glacier at the eastern side of the Novaya Zemlya, Kara Sea, based on accelerator mass spectrometry 14C dating with higher-resolution age control on the basis of 210Pb and 137Cs radionuclides for the time period after AD 1885, using multiproxy analyses (lithology, mineralogy, and geochemistry) of proximal glaciomarine sediments from the Oga Fjord. Against the background of the active glacial dynamics and the intense meltwater runoff until the end of the sixteenth century, there was a sudden cooling at the beginning of the seventeenth century, which manifested itself in a significant decrease in the sedimentation rates. In time, this event coincides with the strongest volcanic eruption, AD 1600, in South America (in Peru) in the history of human settlement of the continent, which may have plunged the globe into cold climate chaos (Witze, 2008), and caused the Great Famine, AD 1601 to AD 1603, in Russia. The synchronicity of the described events may be an additional fact confirming the global impact of the eruption on the climate of our planet.
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