| Autor: |
T. N. Moroz, L. V. Miroshnichenko, Vladimir P. Artamonov, N. A. Palchik |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Springer Proceedings in Earth and Environmental Sciences ISBN: 9783030009243 |
| Popis: |
The elemental and mineral composition of samples from bottom sediments of a deep-sea borehole in the Deryugin basin of the Ohotsk Sea have been investigated by diffraction, infrared spectroscopy, and X-ray fluorescence with synchrotron radiation methods. A clay samples were treated with ethylene glycol and subsequently analyzed. It was evident by this group of minerals that the main source of information about past climate change in the given region comes from illite-smectite and illite composition. The more vivid climate signal within the mineralogical historical records is the concentration of smectite layers within illite-smectite, the increase of which corresponds to warming and increased humidity as well as the opposite. This indicator reliably shows not only prolonged, but also short-term climatic events. The presence and composition of carbonates along the column was determined. It was shown that carbonates react more quickly to changes in environment than the transformation of the illite-smectite components. The gathered data may be compared to local and global environmental changes, including the paleoclimatic events in the system of Ohotsk Sea. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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