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A New Approach to Delineation of Saline Frozen Deposits of the Arctic Coastстатья
- Авторы: Cherniak Yu V., Falaleeva A.A., Brouchkov A.V.
- Журнал: Doklady Earth Sciences
- Том: 507
- Номер: 1
- Год издания: 2022
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 315
- Последняя страница: 322
- DOI: 10.1134/S1028334X22601407
- Аннотация: Saline frozen rocks of the Arctic coast require detailed study, since they are characterized by a lowbearing capacity and low resistance to technogenic impacts. The currently known mechanisms of salinizationof permafrost due to the effect of marine transgression (marine salinity) and cryogenic concentration, as wellas due to the concentration of salts as a result of dehydration of rocks (continental salinity), do not alwaysenable us to explain the presence of saline deposits on the Arctic coast of the Arctic Ocean. The purpose ofthis work is to present new mechanisms of salinity formation in permafrost that can explain the developmentof salinization at significant altitudes above sea level. Possible hypotheses of the formation of saline frozenrocks at high altitudes above sea level are given for the first time: the upsurge in sea level and tsunamis in therecent geological past, the latest tectonics, and biogenic salinization. The applied approach, taking intoaccount the mechanisms of salinization formation in rocks, enables us to present graphically a new variant ofthe map of the distribution pattern of frozen saline rocks in the Northern Hemisphere. The boundary of themarine type of salinization was determined by the maximal boreal transgression, and the boundary of thecontinental type of salinity was drawn by analyzing and comparing the map of atmospheric precipitation andthe map of evaporation (the areas where evaporation predominates over precipitation were isolated). A significantincrease in the areas with the marine and continental salinity types on the Arctic coast of the ArcticOcean is shown. It has been revealed that the maximal transgression did not reach such high levels in highaltituderegions in the Quaternary Period; in addition, the climate of these sites is far from the continentalone.
- Добавил в систему: Черняк Юлия Владимировна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | EarthSci2260140Cherniak.pdf | 480,5 КБ | 10 февраля 2023 [brouchkov@hotmail.com] |