VARIABILITY OF RIVER DISCHARGE AND ATLANTIC-WATER INFLOW AT THE LAPTEV SEA CONTINENTAL MARGIN DURING THE PAST 15,000 YEARS: IMPLICATIONS FROM MACERAL AND BIOMARKER PRODUCTS
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dc.contributor.author | Boucsein B. | |
dc.contributor.author | Fahl K. | |
dc.contributor.author | Stein R. | |
dc.date.accessioned | 2021-01-31T12:47:11Z | |
dc.date.available | 2021-01-31T12:47:11Z | |
dc.date.issued | 2000 | |
dc.identifier | https://elibrary.ru/item.asp?id=14143243 | |
dc.identifier.citation | International Journal of Earth Sciences, 2000, 89, 3, 578-591 | |
dc.identifier.issn | 1437-3254 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/24105 | |
dc.description.abstract | In order to reconstruct the depositional environment from the Laptev Sea continental slope and shelf during the past ~15,000 years BP maceral analysis was carried out on two sediment cores (PS2458-4, PS2725-5) and compared with organic-geochemical parameters. During the transition from the Last Glacial to the Holocene the environment of the Laptev Sea shelf was controlled by the post-glacial sea level rise, variations in river discharge, surface-water productivity, and Atlantic-water inflow along the Eurasian continental margin. Based on our results, we identify the following significant changes of the environment: (a) at approximately 13,500 years BP the first step of deglaciation (Termination 1a) is documented by the deposition of marine and fresh-water organic matter; (b) at approximately 10,400 years BP the first post-glacial influence of Atlantic-water inflow along the Eastern Laptev Sea continental margin is indicated by an increase in marine organic matter; (c) at the beginning of the Holocene an increased fluvial supply is documented by an increase in fresh-water alginite; and (d) since ~9500-8000 years BP modern marine conditions are established at the Laptev Sea continental margin as documented in increased amounts of marine macerals, biomarkers (dinosterol, brassicasterol, short-chain fatty acids), and dinoflagellate cysts. | |
dc.subject | Holocene | en |
dc.title | VARIABILITY OF RIVER DISCHARGE AND ATLANTIC-WATER INFLOW AT THE LAPTEV SEA CONTINENTAL MARGIN DURING THE PAST 15,000 YEARS: IMPLICATIONS FROM MACERAL AND BIOMARKER PRODUCTS | |
dc.type | Статья | |
dc.subject.age | Cenozoic::Quaternary::Holocene | en |
dc.subject.age | Кайнозой::Четвертичная::Голоцен | ru |
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