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Late Pleistocene cryogenesis features of a loess-paleosol sequence in the Srednyaya Akhtuba reference section, Lower Volga river valley, Russiaстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 сентября 2021 г.
- Авторы: Taratunina N., Rogov V., Streletskaya I., Thomson W., Kurchatova A., Yanina T., Kurbanov R.
- Журнал: Quaternary International
- Том: 590
- Год издания: 2021
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 56
- Последняя страница: 72
- DOI: 10.1016/j.quaint.2020.12.015
- Аннотация: Traces of Late Pleistocene cryogenesis structures were catalogued in the alluvial and loess-soil deposits of the Srednyaya Akhtuba reference section. Four stages of permafrost development were described for the first time in the Lower Volga region. Under conditions of seasonal and longer-term freezing in the Late Pleistocene, cryogenic transformation of the deposits took place; this determined the composition, structure and properties of the loess-paleosol complex at the site. Cryolithological, micromorphological analyzes and particle size distribution of mineral matter were carried out for each horizon, and traces of cryogenic processes were described in order to evaluate the regional paleoclimatic conditions that prevailed during their formation. Optically stimulated luminescence dating was used to establish a chronological framework for the main phases of the development of cryogenic modification in the Lower Volga region. The first stage of formation involved deep cracking of the substrate, which occurred during freezing in MIS-4, coincident with the Atelian regression of the Caspian Sea. The second stage is expressed as large wedge-shaped structures (pseudomorphs) on the border of loess and alluvial packs, with their formation known to be associated with the degradation of ice wedges. During the third and fourth stages of freezing, plastic deformation of deposits occurred.
- Добавил в систему: Таратунина Наталья Александровна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Taratunina_et_al._2021_compressed.pdf | 1,7 МБ | 24 мая 2021 [Natulina] | |
| 2. | Полный текст | Taratunina_et_al._2021.pdf | 25,6 МБ | 24 мая 2021 [Natulina] |